As gardeners, we are always looking for ways to add color to our homes and gardens. While a variety of colors can create a beautiful botanical picture, some colors are rarer than others. One such color is blue, which represents tranquility, peace, and serenity. Unfortunately, blue is not a common color in nature, making blue flowers harder to find. However, thanks to the science of flower breeding, more blue flowers are becoming available all the time.
There are now more blue flowers than ever before, varying in shape, size, and shade. In this comprehensive list, you will learn about the 61 most popular blue flowers, along with basic care tips for each. You will also discover what makes these flowers so great! Let’s dive in and brighten up our gardens with the beauty of blue flowers.
Symphyotrichum oolentangiense, also known as the Azure Aster, is a perennial plant that adds delightful beauty to any garden. During the summertime, it forms branching foliage before bursting into gorgeous, blue, daisy-like flowers that simply captivate anyone who sees them! These flowers bloom from late summer until the first frost of the year. It is best to plant them using seeds rather than picking up plants from the wild as this often results in killing the plant. Azure Asters can be grown in USDA Zones 3 up to 9. To get them to bloom their best, they need full sun, though they can also tolerate shaded areas. They do not like soil that is overly wet; dry, sandy, or rocky soil is best for them. They also enjoy soil that is slightly acidic – a pH of 5.5 to 7.5 is their favorite! It is worth noting that this species is endangered in New York and therefore highly prized there.
The reason why Balloon flowers are called as such is because of their puffed-up, balloon-like buds that transform into star-shaped flowers. Its scientific name is Platycodon grandiflorus. This perennial plant is easy to grow and is usually planted during springtime when the weather becomes warmer. It blooms for the entirety of summertime and is even able to self-seed, though it is not an aggressive grower. Balloon flowers are highly resistant to pests and diseases and come back every year with a showy display of blooms.
To plant them, you can either grow them from seeds or purchase nursery plants. Sometimes, they may need staking to keep them upright, especially if they grow tall. These plants require full sunlight but can also tolerate partial shade, which may be necessary during hot afternoons. They prefer soil that is loamy and well-drained, and it is important to keep the plant’s soil moist without overwatering. Balloon flowers thrive in USDA zones 3 through 8.
The bird-bill dayflower is a stunning plant with vibrant blue blooms that appear each day and wither by midday. Scientifically known as Commelina diathifolia, these flowers stand out because of their unique tri-petal shape resembling mouse ears. Despite its beauty, many consider bird-bill dayflowers to be weeds as they are incredibly hardy and can grow in various soil conditions. The plants have thick, watery stems and produce new leaves and branches from the nodes. They bloom during summer and early autumn and thrive in partially shaded conditions but will also enjoy ample sunlight. Bird-bill dayflowers are perennials and grow back each year from tubers. They prefer moist and rocky soils and can be propagated by planting seeds in mid-spring in a greenhouse. These beautiful flowers work well in rock gardens, borders, and containers, and have a USDA hardness rating of 6 to 9.
These lovely flowers, scientifically known as Hyacinthoides non-scripta or English bluebells, are a favorite of many bees and birds due to their sweet scent. The bluebell is a perennial plant that produces gorgeous blue flowers shaped like bells and is an excellent choice for those who enjoy attracting butterflies and birds to their garden. While they are usually found in shady habitats, they still require ample sunlight, so partially shaded areas with lots of dappled sunlight are best for growing them. The bluebell blooms from early to late spring, disappearing by mid-summer.
Bluebells are easy to grow because they are hardy little plants that can resist pests and disease. They are usually left alone to do their thing and enjoy moist soil conditions, provided they are planted somewhere well-drained. It’s worth noting that the whole plant is poisonous, so it is not advisable to eat any part of it. If you live in a woodland area, bluebells will grow easily in your garden, but they can subsist elsewhere too!
Blue daisies, scientifically known as Felicia amelloides, are herbaceous perennials that have narrow blue petals and a bright yellow center. They bloom from June to August and are well-loved for their classic daisy blooms in a pretty blue color. These plants thrive in full sunlight and require consistently moist soil that is well-drained. While they are relatively easy to grow, they do better in temperate climates rather than extreme heat or cold. Blue daisies are a favorite flower of many different kinds of butterflies and make for a beautiful sight during the summer months. They are fairly hardy and grow well in USDA zones 9 to 15. To grow them, you can plant the seeds a little bit before the final spring frost, which will ensure they bloom throughout the hotter months.
The blue false indigo is a sturdy perennial with long upright spikes of blueish-purple flowers. Its scientific name is Baptisia australis. This plant grows two to five feet tall and produces beautiful purplish-blue flowers. If planted in full shade, it will require extra support and may need a stake to lean on. However, it also thrives in full sun and partial shade. Planted next to fences or with companion plants, the blue false indigo adds an elegant touch to any garden. It blooms throughout the springtime. To propagate this plant, collect seeds from its seed pods in the late summer. Be aware that it may take a few years for the plant to flower. The blue false indigo can tolerate drought and poor quality soil, making it ideal for growing pretty much anywhere. Trimming the foliage after blooming can help it maintain its rounded shape. This plant grows in USDA zones 4 to 8 and is very hardy.
Blue flax wildflowers are hardy plants that can thrive even in poor soil conditions. Scientifically known as Linum lewisii, these short-lived wildflowers are typically annual plants, although they can grow as perennials in other regions. Unlike other plants, blue flax grows at an angle instead of straight up. It produces many flowers that bloom for only a day before wilting. Blue flax blooms in late spring and summer and needs a medium amount of water and lots of sunlight to flourish. Interestingly, blue flax should be planted in rocky, sandy, or otherwise poor soil conditions, as richer soil can cause the plants to die. They are best suited for wilder gardens, such as those found in woodlands, rather than perfectly manicured flower beds. You can plant blue flax as you see fit, and they self-germinate, producing a good amount of flax. Blue flax grows best in USDA zones 4 to 9.
The blue hibiscus, scientifically known as Alyogyne huegelii, is a stunning plant that blooms all year round. While it is not a true hibiscus and its blue color is not perfect, it is still a fantastic plant to have in your garden. One of the best things about this plant is that it is rarely affected by pests or diseases, making it an excellent choice for organic gardens.
The blue hibiscus produces flowers multiple times throughout the year, particularly during the summer and late autumn. It thrives in full sun and prefers soil that is medium-moisture and well-drained. Although it does best in alkaline soil, it can also grow well in acidic soil with minimal need for fertilizer.
This plant is relatively low-maintenance, requiring only minimal pruning of older shrubs to promote growth. You can propagate it through semi-ripe cuttings in late summer. Once established, it is quite hardy and can resist drought over time. The blue hibiscus can grow in USDA zones 9 to 11.
The Blue Mist shrub, also known as Bluebeard, thrives best in Hardiness Zones 5-9 and its scientific name is Caryopteris cladonensis. This shrub grows to be around 3-5 feet tall and produces showy flowers that bloom from late summer until the first winter frost. These flowers have a wonderful aroma and attract pollinators such as bees and butterflies. Once established, the Blue Mist shrub needs only occasional watering and enjoys full sun, requiring at least 6 hours of it per day. It also needs well-drained soil. Pruning should be done in springtime when leaves begin to form again. Although deciduous in most regions, this plant may remain evergreen when planted in certain areas. However, the shrub grows quickly and will be able to flower in summertime.
Blue orchids are an excellent choice for adding subtle bits of color to your garden. They produce flowers that are a faint blue-purple in color, making them visually appealing. However, they can be a bit finicky when it comes to care, so it’s best to have prior knowledge of orchids before attempting to grow them in your garden.
Blue orchids are scientifically named Vanda coerulea, and they thrive in tropical or warm, humid regions. They are native to Northeast India, Myanmar, Thailand, and Southwest China, and require direct, bright sunlight and warm to slightly cooler temperatures. Some different varieties of blue orchid can be found in nature, and they grow best in USDA zones 9 to 11.
If you’re planning to grow blue orchids in your garden, you should provide them with a hanging planter, as they enjoy this type of habitat. Additionally, they need periodic watering throughout the spring to fall, while they rest during wintertime. It’s important to keep their soil moist during the hottest months of the year, reducing gradually in autumn.
The easiest way to grow blue orchids is to purchase seedlings. With proper care, these beautiful plants will thrive in your garden and add a touch of elegance to your outdoor space.
The Amsonia tabernaemontana, also known as the Blue Star, is a low-maintenance plant that can thrive in almost any garden. This plant produces delicate, pale blue star-shaped flowers and is a great addition to any garden. The Blue Star grows best in average, well-drained soil that is slightly moist, but it can tolerate some drought as well. Although it does well in part shade, it prefers full sun. When given full sun, it usually does not require pruning or staking. However, rich soils may make the plant vulnerable to drooping, which will require staking. The Blue Star blooms from March through May and grows to be two to three feet tall. It is a great choice for first-time gardeners as it does not require too much attention or maintenance. Propagation by seed is an option, and these plants germinate at a good pace. However, expect blooms to come in the second year of its life. The Blue Star grows well in USDA zones 3 to 9.
The Bluecrown passionflower is a unique and intriguing flower on our list. Its scientific name is Passiflora caerulea. This flower grows as a vine, spreading 3 to 6 feet in growth and reaching anywhere from 10 to 25 feet tall. It has stunning twining tendrils and distinctive, showy blue flowers. The passionflower is evergreen in tropical climates and deciduous in places with cool winters. It can survive temperatures as low as 5°F. The blooms grow sporadically through early summer and early fall. To care for these plants, water them thoroughly but infrequently. Bluecrown passionflowers love the sun but will also thrive in part-shade. It is important to ensure that the soil is well-drained and that the plant gets enough air; otherwise, it could be prone to fungal infestation. Loose soil that is either sandy or gravelly is best for this plant, and over-composting should be avoided as it prevents the plant from flowering. Bluecrown passionflowers can be propagated by seed or cutting. They grow best in USDA zones 7 to 9. While they produce interesting-looking fruits, they are not particularly tasty.
These beautiful flowers have more to offer than just their looks, they are edible too! Viola sororia is the scientific name for the blue violet, which may be a common sight but its purple-blue blooms are uniquely spectacular. Its heart-shaped leaves are topped with white-throated blue blossoms that bloom from March to May, and sometimes sporadically through the summer. Although violets come in different colors, these wild blue violets are considered more of a weed. They thrive best in the sun, but will also grow in partial shade as long as they have moist, well-drained soil. They are commonly found in southern states but can be a bit hard to control if left to themselves in certain conditions. These plants attract birds and butterflies, making a great show when the flowers bloom in the springtime. You can use the flowers to decorate cakes or cookies by candying them, or even use them in teas. The blue violets usually reach a height of around 8 inches and grow best in USDA zones 3 to 7.
Many individuals tend to consider chicory as a type of weed, but some can appreciate the beauty in its blue flowers. Scientifically referred to as Cichorium intybus, chicory is an annual or biennial plant that produces stunning, showy, blue flowers. Despite being viewed as a weed by some, many people cultivate this flower for its stunning appearance. The flowers, which are around 1 to 1.5 inches across, boast 10 to 20 ray florets, with each petal ending in five teeth. These flowers open in the morning and close later in the day.
Chicory plants thrive well in areas that receive a full amount of sun and can grow in most soils, although they prefer gravelly soil or soil that has been mixed with clay. They also tolerate road salt and alkaline soils well. Chicory flowers do not require a lot of water, making them drought-resistant; however, it may be advisable to keep the soil they grow in moist. In some cases, chicory is grown to be used in salads or teas. The plant grows best in USDA hardiness zones 3 to 10.
To ensure the growth of these beautiful blue-flowered vines, it is recommended to provide a trellis or fence for them to climb. These vines are scientifically known as Clematis and can grow vigorously up to 10 to 20 feet long depending on the cultivar. With some varieties suitable for small gardens, Clematis plants thrive when given a structure to climb onto. It is best to plant Clematis in spring to allow it to establish itself before winter sets in. These plants require a good amount of water, especially during the early stages, and need a spot that gets full sun for at least six hours every day while keeping their roots cool. Clematis grows best in USDA hardiness zones 4 through 9 and can be propagated from seeds or cuttings.
Columbines are perennial plants that can add a beautiful touch to any garden. They produce stunning blue, bell-shaped flowers that attract various pollinators such as birds, bees, and butterflies. These flowers love the sun but can also thrive in partially shaded areas. It’s important to plant them in well-drained soil that is average in quality and of medium moisture.
They bloom from mid-spring throughout the summer, giving you plenty of opportunity to enjoy the blossoms before the fall season arrives. Columbine flowers come in different sizes, usually reaching up to three feet tall, but some dwarf varieties only grow up to six inches tall.
Columbines are easy to grow and self-seeding, so you won’t have to worry about planting new ones every year. Each plant lasts for about three years, but new ones will continue to grow from the seeds they produce. Plant them in the spring for the best growth. They grow best in USDA zones 3 through 8. Seeing the pollinators drinking the flowers’ nectar is a delightful sight to behold.
These lovely flowers thrive in full sunlight and are scientifically known as Centaurea cyanus or Bachelor’s Button. They are an annual plant that produces beautiful double-headed blooms in a striking blue color. These upright plants grow to be around 1-3 feet tall and spread to be 6-12 inches wide. They bloom from May through July, making it best to plant them outdoors after the last spring frost.
Caring for these plants is relatively easy, and they tend to reseed themselves quite often, so maintaining them does not require much effort. Corflowers enjoy sunlight but can also thrive in light shade and can be planted in moderately moist soil that is well-drained. As they are naturally resistant to pests and disease, they do not require many pesticides. However, if they grow too tall, it’s a good idea to stake them for added support.
These flowers are attractive to butterflies and other pollinators and grow best in USDA zones 2 through 11.
Looking for sturdy plants? Look no further than the desert! The Phacelia campunlaria, also known as the desert bluebell, thrives in the soils of California deserts. If you live in or near this area, you can enjoy the bright blue blooms of this annual plant. Bees, particularly bumblebees, love these cobalt blue, one-inch flowers, so planting them is a great idea. These plants grow 6 to 18 inches tall and self-propagate when well established. They can withstand drought and are low-maintenance, staying free of disease and pests. The soil must be somewhat dry and well-drained, yet still fertile with a neutral pH of 6.8-7.2. These plants grow best in USDA zones 5 through 10. It’s worth noting that besides bees, these flowers also attract butterflies.
These charming little flowers are surrounded by bright green heart-shaped leaves and have the scientific name Evolvulus. The dwarf morning glory is a beautiful herbaceous perennial plant that produces lovely lavender to blue flowers. They love sunlight and will close at night, much like the morning glory. This plant prefers soil that is rich in organic matter and well-drained. Proper pruning will help them make excellent ground cover, growing anywhere from 1 to 3 feet tall. Dwarf morning glory blooms best in summer through fall and is drought-tolerant, making it a great option for low-maintenance areas of your garden. They thrive in temperatures above 65 degrees Fahrenheit and can be propagated with seeds or softwood cuttings. Deadheading is not necessary as the plant tends to remove dead blooms on its own, but pruning can help control growth rate and direction. These plants do well in USDA zones 8 through 11.
This plant, scientifically known as Buddleja davidii ‘Empire Blue’, produces clusters of purple-blue flowers with orange centers that bloom from mid-summer until mid-fall. It is a fascinating plant that attracts butterflies and hummingbirds, making it a treat for nature lovers. Although deciduous, it can be treated as a perennial as it comes back every year when cut down to the ground. The Empire Blue butterfly bush does not require a lot of maintenance, and pruning can be done in late winter after any major frosts have passed. It can grow up to 5 feet tall if not pruned. This plant needs full sunlight to grow properly and can tolerate both dry and moist conditions, as long as the soil is well-drained. It can also withstand most weather conditions, pollution, pests, and diseases without needing a specific soil pH. The Empire Blue butterfly bush grows best in USDA zones 5 to 9.
Fairy thimbles, also known as earleaf bellflowers, are charming members of the bellflower family. These delightful plants grow close to the ground and produce beautiful blue flowers. They typically range from 3 to 6 inches tall and spread 1 to 2 feet across. Fairy thimbles thrive in full sun but can also do well in part-shade. It is important to plant them in medium-quality, well-drained soil, and avoid growing them in overly hot and dry conditions. Fairy thimbles prefer neutral or alkaline soil that is kept moderately moist.
Fortunately, fairy thimbles are self-sowing perennials, meaning they will reappear each year without much effort on your part. They bloom from late spring to mid-summer and are moderately easy to care for, thriving best in USDA zones 5 through 7. So, if you’re looking for a beautiful and low-maintenance addition to your garden, consider adding some fairy thimbles.
These charming little flowers are a gardener’s delight. Known scientifically as Myosotis scorpioides, Forget-me-nots are one of the quintessential blue flowers, though it may come as a surprise to some that they are considered weeds in certain parts of the United States. Before planting them, be sure to check local regulations to ensure that they are allowed.
Forget-me-nots are herbaceous perennials that typically grow to be 6-12 inches tall and spread 9-12 inches across. They thrive in full sun and partial shade, and prefer soil that is rich in organic matter and adequately moist. If desired, they can also be grown in water, provided that the water level does not exceed 4 inches.
These plants are incredibly low maintenance and make an excellent addition to any garden, as long as their growth is kept under control. During their bloom period, which typically occurs from June to August, they attract butterflies. Additionally, Forget-me-nots are generally resistant to most pests. They grow best in USDA zones 5 through 9.
The Gentian flower is not only a beautiful sight but also has healing properties for stomach problems. Scientifically known as Gentiana Acaulis, this much-beloved herbaceous perennial grows deep, true blue flowers, thriving in cooler summer conditions with access to the sun. To ensure they receive the full amount of sun required for flowering, make sure their leaves do not become bleached. Gentian plants enjoy gritty soil that is full of gravel, as long as it is moist and well-drained. They can also tolerate drought as long as they are not frequently exposed to it, and can handle alkaline soil pretty well. These plants are relatively easy to care for since they don’t have any serious pest or disease problems. Gentian plants grow low, standing at 4 to 6 inches, making them good ground cover. Their bloom period is from May to June, and they grow best in USDA zones 3 to 7.
The globe thistle is a unique flower due to its spherical shape that stands out from other blue flowers. Its scientific name is Echinops. This plant is interesting to grow, thanks to its spiky leaves and round flower heads that come in a beautiful shade of purple-blue. It’s a great addition to any garden, especially for those who prefer low-maintenance plants.
The spherical flowers bloom in late summer, and after they flower, it’s advisable to cut them back a bit to preserve the health of the plant. This process usually brings out another set of blooms, although it’s not guaranteed. Globe thistles prefer moist, well-drained soils before they are fully established; once established, they can tolerate drought fairly well. This plant is resistant to most pests and diseases, although it can attract aphids sometimes. These plants grow 2 to 5 feet tall and must be pruned occasionally. They self-sow easily, allowing them to come back each year more beautiful than ever. Globe thistles thrive in USDA zones 3 to 8.
The plant known as Glory-of-the-snow produces beautiful blue flowers that stand out against the pure whiteness of snow. Its scientific name is Chionodoxa luciliae and it typically blooms from March through April, often appearing during the melting of snow which is how it got its name. This low-growing plant makes for a great ground cover, reaching a height of 4 to 6 inches and spreading around the same width-wise. It grows best in full sun but can also tolerate partial shade and prefers medium-moisture, well-drained soil. While it doesn’t last very long and loses its foliage by the end of spring, it will come back the following year. The plant is generally not susceptible to serious disease or pest problems, although nematodes can be troublesome in some parts of the US. Glory-of-the-snow pairs well with other early spring bulbs like tulips and daffodils, and grows best in USDA zones 3 through 8.
Grape hyacinths, scientifically known as Muscari, emit a sweet fragrance and boast pretty bell-shaped flowers that resemble grapes in clusters. These adorable little flowers bloom in shades of light blue to purple blue and are quite fragrant. They thrive best in full sun but can also do well in shady areas, making them a great addition to any garden. Grape hyacinths are winter-hardy and can be planted in the fall, blooming in the mid-to-late spring of the following year. They prefer moist, well-drained soil and are fairly tolerant of diseases and pests. Proper pruning is necessary to prevent reseeding, although it’s always exciting to see more of these blooms. Grape hyacinths are suitable for formal beds and rock gardens, beside ponds and streams or in pots and planters. They are versatile plants that can thrive in USDA zones 4 through 9.
To prevent harm to children and pets, it’s important to keep poisonous plants out of their reach. One such plant is the Lobelia siphilitica, a beautiful perennial with lavender-blue flowers that can grow up to 2-3 feet in height and may require staking for additional support. Great lobelias prefer moist conditions and are often found near streams or rivers. To replicate this environment in your garden, ensure that the soil is consistently moist and nutrient-rich. They thrive in full sun to partial shade, depending on the climate, and bloom from late summer to mid-fall. Great lobelias are resistant to disease, pests, and deer but are not drought-tolerant. These low-maintenance plants attract hummingbirds and other avian friends. However, it is essential to note that all parts of the plant are poisonous and can be dangerous if ingested in large quantities. The best USDA zones for this plant are 4 through 9.
These Geǹtiaǹa sapoparia flowers, commonly known as harvestbells or soapwort geǹtiaǹ, are indigeǹous to North Caroliǹa and grow well in moist or humid coǹditioǹs. They produce bottle-shaped, violet-blue flowers that only partially open. The plant typically grows between 8 to 20 inches tall and blooms from August through October, occasionally extending into November in warmer climates.
Harvestbells require partial shade to thrive but can tolerate full sunlight as well. They prefer moist soil, usually sandy, but can grow in other types of soil as long as the moisture conditions are met. Their preference is for acidic soil, with a pH of less than 6.8.
These flowers are pollinated by bumblebees, who are strong enough to access the partially closed flowers and drink the nectar. It may be easier to transplant the plant rather than growing it from seeds, which can take an extended period of time. Harvestbells do best in USDA hardiness zones 4 to 8.
The Himalayan blue poppy (scientific name: Meconopsis betonicifolia) is a beautiful flowering plant that produces stunning, true-blue flowers. It requires a little extra care to thrive since it is selective about its environmental conditions. These plants prefer partial shade and are best grown in a shady garden. However, it may be challenging to grow these plants to their full potential due to their finicky nature. They require soil that is neutral to slightly acidic and well-drained but moist. Enriching the soil with humus will promote growth. These plants enjoy cool summer periods and do not appreciate hotter conditions. They can grow anywhere from 3 to 4 feet tall and spread 1 to 2 feet across, blooming from early to mid-summer. As perennials, it is best to cut them down to the ground after the fall. These plants are vulnerable to pests like slugs and snails, as well as diseases like mildew. Himalayan blue poppies grow best in USDA hardiness zones 3 through 9.
These flowers, known as Hyacinth (scientific name: Hyacinthus orientalis), have a very brief bloom period that lasts only for two to three weeks. They come in an array of colors, including blue, and are beloved by many. Hyacinths thrive in full sun and organic-rich soil, with an average pH level being suitable. The soil should be moist but well-drained, especially after planting to encourage root growth. Enjoy their beauty while you can during mid-spring when they bloom. These plants grow up to 6 to 10 inches tall and spread over an area of 4 to 6 inches, making them easy to maintain as long as you keep up with their needs. For early blooms, they must be planted in autumn and grow best in USDA zones 4 to 8. However, if you live in zones lower than 5, it’s essential to winter protect them by mulching their beds to prevent frost damage.
Hydrangeas are a popular choice among gardeners who love blue flowers. Their scientific name is Hydrangea macrophylla. While some species have white flowers, the ones that are most well-known have large clusters of pretty, blue flowers. These plants can grow quite tall and often reach impressive heights of 6 to 10 feet. They also spread the same amount, so be mindful of their space. Hydrangeas prefer part-shade to full shade and will only tolerate full sun when their soil is consistently moist. If you want to grow blue hydrangeas, you need to pay attention to the pH levels of the soil, as highly acidic soils produce blue flowers while more alkaline soil produces pink flowers. The flowers bloom throughout the summertime and will bloom on and off for 3 to 6 months. Hydrangeas hardly need any pruning, although you may opt to do so after they flower. These plants are also vulnerable to cold and will thus need mulch as a root cover to help with temperature fluctuations. They may not bloom very well some years because of circumstances outside of your control, but continue caring for them, and they will bloom their best. These plants thrive most in USDA zones 5 through 11.
These stunning plants have the ability to brighten up any part of your garden or yard. The scientific name for these plants is Impatiens namchabarwensis and they are part of the Impatiens flower family, which has several different varieties. However, it is the Impatiens namchabarwensis that produces beautiful, sapphire-blue flowers that are sure to catch your eye. These flowers need full sun to grow, but they can also thrive in partial shade. Proper care for these plants includes rich, well-drained soil with consistent moisture. You can enjoy these rare and beautiful blossoms from spring through summer as they grow to be 12 to 24 inches tall.
It’s important to note that Impatiens are sensitive to frost, so you’ll want to take precautions to protect them during winter by mulching their root cover. These plants are self-sowing annuals in areas with cold winters, but may become perennials in locations with milder winters. As they are quite rare, it’s essential to give them proper care. They can grow in beds or containers, or in any spot you’d like to add some beauty to your outdoor space.
Irises are a popular flower that usually bloom in spring or summer and are scientifically known as Iris versicolor. These flowers are well-known for their blue color and can grow up to 2 to 2.5 feet high and wide. They prefer to be in a sunny or part-shade environment and enjoy soil that is medium-moist to wet. However, it may be challenging to maintain the moisture level of the soil. Also, they are susceptible to rot and pests, so gardeners should take care of these plants accordingly.
The Southern Blue Flag, also known as Iris Virginica, is a popular type of iris in southern parts of the United States. Irises prefer acidic soil, with a pH less than 6.8 and typically bloom from May through June, although they may still flower in July and August. Gardeners can grow them near water features as they enjoy moisture.
Irises spread by self-seeding, so expect to see them year after year. They thrive in USDA zones 3 to 9.
The tall blossoms are a lovely addition to any garden or as a centerpiece in a vase.