Here the groundwork of a good drainage pays off (also applies to other flowers). (Do not allow to fully dry out or it starts to get "crispy.") I'm not sure how it got there. Both the Cardinal Flower and the Great Blue Lobelia are unsuitable for hanging baskets because of their size and growth habit. These two little plants grow only about 6 inches tall. . RELATED: Place your seeded trays somewhere warm (65-75°F) and keep the soil moist during the germination period. From tools to furniture, these garden products are sure to delight. Avoid pruning back or deadheading cardinal flower and other perennials if you want them to reseed naturally. In spring, after the danger of frost has passed. Flowering Plants for the Fall Garden Lobelia siphilitica. They also do well in my backyard which is shady and on the edge of a wetlands area so the soil is always wet. Water the potting soil. Fall Color: Hardy From Zone: Hardy To Zone: ? A lightly shaded position, or one out of strong, direct sunshine, will ensure plants go on flowering profusely for a long time – especially during very hot summers. Tidy bloom-covered mounds are a great choice for use at the front of a border, as an edging along shady walkways, or as a colorful groundcover. General: Great blue lobelia is comparatively easy to grow. Techno® Blue is covered in intense, cobalt blue flowers. Annual lobelia will grow nearly anywhere. If growing by seed indoors, start plants 10 weeks prior to last frost date for your area. Also try: 'Queen Victoria', with bright scarlet-red flowers with dark maroon foliage, and âRuby Slippersâ, with ruby-colored flowers. Container Gardening Ideas. All forms flower constantly throughout the summer until the first frosts. Regardless of the type of lobelia you grow, all species grow best in well-draining, but moist to very moist soil. Discover the right plants for your garden. You're quite welcome Flourish! They grow along streambanks which are wet year-round. Lobelia is a fairly easy plant to grow from seed. They do not produce so much seed that they become a nuisance which is a good thing because the plants are quite large, growing between 2 and 3 feet tall. Growing Lobelia Plant. Perennial varieties can usually get by with a yearly application of fertilizer or compost in the spring. Lanceolate serrated leaves alternate along the stem, culminating into tiny bracts amidst the bell shaped blooms. Troubleshooting. Lobelia seeds can be sown directly in the garden or indoors for later transplanting. Photo by: John Richmond / Alamy Stock Photo. Don't transplant seedlings outdoors until a few weeks after the last frost date. Plant in full sun to part shade. Plants that have no roots cannot grow new leaves. All Rights Reserved. Perennials tend to be short-lived, but the plants are easy to propagate by dividing them in the spring or fall or by taking stem cuttings after your plants finish flowering. If blooming slows during the heat of summer, the best way to revive them is to cut them back by as much as one-half to two-thirds, followed by regular watering. Its semitrailing, mounding habit is a great addition to containers and hanging baskets. Discover unique garden products curated by the Garden Design editors, plus items you can use to solve problems in your garden right now, and best sellers from around the web. Cascading varieties make attractive spillers in hanging baskets and window boxes. An excellent choice for borders and beds with moist soil. The bees act drunk on nectar, and the flowers are practically guaranteed a thorough pollination. How to grow Lobelia erinus How To Grow Great Blue Lobelia From Seeds. As a rule, the lobelia in June blossoms, and blossoming in September comes to an end. It’s easy to divide them. I’ve never seen it for sale in big box stores. Germination will occur in 14 to 30 days. And although cobalt blue may be their signature hue, youâll also find lobelia flowers in scarlet red, lilac, rose, and vibrant tropical colors. How to Grow Blue Lobelia. Trailing forms are popular in hanging baskets, window boxes and containers. It has fine stems and deep green leaves, which are toothed and roughly oval. How to Grow Great Blue Lobelia From Seed Growing Great Blue Lobelia from seed is easy. How To Grow Lobelia. Extremely hardy, low care, and fairly pest and disease-free, Great Blue Lobelia tends to be short-lived, although it may self-seed in ideal growing conditions (without becoming invasive). Sowing: Sprinkle the lobelia seeds on the surface of a good seed compost and do not cover the tiny flower seeds with anything, the lobelia seeds need light to germinate. Surface sow the seed. A lightly shaded position, or one out of strong, direct sunshine, will ensure plants go on flowering profusely for a long time – especially during very hot summers. They're not just a one-color wonder, nor are they always a tender annual. She has been associated with Rutgers Gardens for over a decade. You can pinch back the plants to make them bushier. Blend Laguna® Dark Blue, Sky Blue, and White for a greater impact. They are perfect for garden borders, outdoor containers, hanging baskets, as ground cover, etc. Varies by species. You can plant your seedlings outdoors after all danger of frost spacing them 8 to 12 inches apart. Other names include Lobelia syphilitica, Blue Cardinal Flower, Great Lobelia, High Belia. Rather uncommon, this exotic and tropical-looking variety has trumpet-shaped salmon-red flowers with bright yellow and orange throats that hang in clusters on thin red stems. Flowers that work best in hanging baskets either drape or are very short. Attracts Wildlife . Sign up for weekly gardening inspiration and design tips. Add some intense blue to your garden. Laguna varieties don't like wet feet, so be sure to let the soil dry out before watering. Most annual lobelias are self-cleaning, so you donât need to deadhead them. Great blue lobelia flourishes in moist soil with filtered shade but will adapt to drier conditions with more shade. See more of our favorite blue flowers for your garden. How To Grow Lobelia Flowers From Seeds # 1 | Direct sow your lobelia seeds in late fall. On the place of flowers, the set of the fruits representing with a set of seeds boxes is formed. Longer lived than the Cardinal Flower it blooms in the late summer producing spikes of deep blue … document.write(theDate.getFullYear()) This long-blooming hybrid bears flowers on tall, upright stalks and thrives in moist conditions. Some perennial varieties, such as cardinal flower, prefer boggy conditions and can even be grown in standing water. Both are upright plants that are tall, between 2 and 3 feet high. Lobelia species are available in different varieties. Season of Interest: Late (July - frost) Main Color: Blue. They do not attract deer. Great blue lobelia flourishes in moist soil with filtered shade but will adapt to drier conditions with more shade. In late summer stems are topped by spiky racemes of intense blue-violet florets. So dig in lots of bulky organic matter, such as compost, to improve the moisture holding – especially on free-draining soils. Some varieties bloom white or pink. var theDate=new Date() You may add a bright hue to your garden by growing these plants. They are perfect for garden borders, outdoor containers, hanging baskets, as ground cover, etc. Surface sow the seed. * Required FieldsWe will never sell or distribute your email to any other parties or organizations. I've owned 2 homes, both of which had shady yards so I've become rather knowledgeable about shade gardening. High heat can cause lobelia to suffer, but the plants stay in bloom for many weeks in climates with cool nights. Flowers of this genus all have two narrow lobes or “ears” above, with three wider lobes forming a lip below. They are a must-have for my spring containers, and anywhere else in my garden where I want to add a blast of blue. Set the cuttings in a container filled with soil. Spring through fall; nearly year round in mild climates. Blue lobelias are among this elite group, which also includes blue sea holly (Eryngium planum), Siberian larkspur (Delphinium grandiflorum), Lily of the Nile (Agapanthus africanus), Texas bluebonnets (Lupinus texensis), blue daisy (Felicia amelloides), and blue hydrangeas. Hummingbird havens, garden borders and groundcovers, rain gardens, woodland gardens, spillers in container combinations, pollinator gardens. If you want to overwinter in pots outdoors, no, they will not survive. LagunaÂ® Dark Blue — Buy now from Proven WinnersL. The great Blue variety can grow up to three feet in height and nearly a foot wide. Flower Garden Design Whether you want to perk up your containers, create a colorful border, or illuminate a woodland garden, there's a lobelia plant to suit your purpose. Gently firm the compost down after you sprinkled the seeds. Perennial type of lobelia (not to be confused with the low-growing, often blue annual types) are magnets for hummingbirds, so they're great for wildlife gardens. Great Blue Lobelia (Lobelia siphilitica L) is a native perennial plant to the Eastern half of the United States. Lobelia erinus doesn’t like dammed-up water at all. Surface sow, barely covering, and keep moist but not sopping wet. Height: 1-4 ft Spread: 12-18 in Spacing: 18-24 in USDA Hardiness Zone: 4-8 Bloom Color: Blue, Violet Lobelia siphilitica Characteristics. is an attractive annual herb with many varieties. Lobelia can also be grown from seeds, and clumps of the perennial can be divided to create new plants. In midsummer, most will need some shade to keep them blooming, with the exception of those with improved heat tolerance. erinus. In the spring, you will rewarded with seedlings. It is, in fact, related to the well-known red Cardinal Flower. How to grow lobelia Cultivation Bedding lobelia. Tall spikes of brilliant true-blue flowers grow on a stiff, unbranched, leafy stalk, 1-3 feet high. These plants are easy to grow and grow … Growing lobelia is an asset to the garden. The capsules can be collected in autumn, usually October. How to grow Great Blue Lobelia. Grow your lobelia in a hanging basket and display it on a porch. Allowing your plants to self-sow is the easiest way to create new plants. 21 Blue Flowers for Your Garden If you typically mulch your perennial beds to prevent frost heaving and root damage, use a light layer of mulch that wonât completely cover the basal leaves. Lobelia is a great cool-season flower for adding vivid blue to the garden. Great Blue Lobelia, Lobelia siphilitica, is a lovely plant late in the growing season, when plants with yellow flowers are usually prominent. Sow singly or in small groups spaced around half an inch apart in trays of good seed compost. Because great blue lobelia seems to grow in patches, this is an efficient operation for both bee and blossom. There are more than 400 species that include upright and mounding lobelias, annuals, half-hardy annuals, perennials, and even shrubs and aquatic plants. Add in rock gardens, butterfly gardens, or in a deer-resistant landscaping design. Lobelia is a great cool-season flower for adding vivid blue to the garden. Growing Great Blue Lobelia from seed is easy. Lobelia siphilitica, commonly known as blue cardinal flower or great blue lobelia, is an easy-to-grow perennial for U.S. Department of Agriculture plant hardiness zones 3 to 10. The stalks are cut below the capsules, and placed upside down in a per sack. Troubleshooting. Most perennial lobelias, including the great blue (Lobelia siphilitica), cardinal flower (L. cardinalis) and their related cultivars maintain an above-ground basal rosette of leaves throughout the winter. It has fine stems and deep green leaves, which are toothed and roughly oval. Unless you plan to let your plants self-sow, divide them every two or three years to extend their lifespan. They survive winters in U.S. Department of Agriculture plant hardiness zones 10 and 11, but they are usually grown as spring annuals because they fade in the summer heat. In fact, lobelia even loves downright wet conditions, making it a top choice for bog gardens. Generally growing 2-3 ft. tall (60-90 cm) and spreading 12-18 in. On this page: The Basics | Varieties | Growing Tips | Care and Maintenance | Pictures | Design Ideas, Grown as an annual in most zones; perennials vary by species. L. siphilitica.. Great blue lobelia (L. siphilitica), or blue cardinal flower, is another perennial wildflower with long-lasting, tall stems that feature bright blue flowers.Propagation. Another easy way to propagate your plant is by cuttings. General: Great blue lobelia is comparatively easy to grow. LagunaÂ® Sky Blue — Buy now from Proven WinnersL. Can be a little difficult to grow from seed though, so most gardeners buy in 6 packs from the local garden center. CareProvide full sun to partial shade and fertile, moist soil. It was named siphilitica because it was mistakenly thought to be a cure for syphilis. How to Grow Lobelia Plants. It needs a good, fertil… Some varieties bloom white or pink. The foliage is a handsome rich green to sometimes dark reddish purple. Great blue lobelia (L. siphilitica), or blue cardinal flower, is another perennial wildflower with long-lasting, tall stems that feature bright blue flowers. You may add a bright hue to your garden by growing these plants. Germination takes anywhere from 10 to 30 days at 60-65F/15-18C. Lobelia erinus ‚Techno Up‘ Blue, Garden lobelia Watering. "Siphilitica," the species name, is derived from a … Press the seeds gently into the surface and germinate at a temperature between 15-20°C (6-68°F). Grow Your Own Lobelia Seeds and Cuttings. Instead of deadheading the flowers to make the plants appear neater, allow some to go to seed. Gray ... All ratings refer to the UK growing conditions unless otherwise stated. They can also be grown in containers set in a tray of water on a patio or deck. For late summer blue blooms these are the ones to choose. Rejuvenate plants in midsummer by cutting back, to maintain bushy growth and encourage repeat flowering. In early summer, pinch back plants to stimulate the growth of new blossom-bearing branches. Plant in a potting mix rich in organic matter. In mid-summer, before the plants bloom, make 4 to 6 inch cuttings from actively growing branches. How To Grow Lobelia. Neutral: On Jan 17, 2005, JodyC from Palmyra, IL (Zone … Annuals reach a maximum height of about 12 inches. Germination time is 14 days at consistently warm (70 degrees Fahrenheit) The seeds can germinate at lower temperatures, but it can take quite a long while. Pruning Edging and Trailing Lobelia. inflata (I… Grow Lobelia erinus in a cool spot in moist soil in partial shade. Planting and Growing Lobelia. They attract butterflies and hummingbirds. This blue cousin of the cardinal flower shares many similar features, producing dense spikes of showy flowers that are magnets for hummingbirds and butterflies. After the cuttings have developed roots, you can set them outside in your garden, 8 to 12 inches apart, so that they will be able to grow their rosette of leaves before winter. Growing Lobelia From Seed. Blue lobelia grows as a wildflower and doesn't usually require fertilizer, preferring organic nutrients from compost. Reproduction in whole or in part without permission is prohibited. Cardinal flowers crave water and are perfectly happy growing in a water garden or at the edge of a stream or pond. Caren White is a Master Gardener and instructor at Home Gardeners School. This flower since 1861 is cultivated. Harvesting. When using them in mixed container combinations, be sure to team them up with other moisture-loving shade-tolerant annuals and perennials, such as violas, impatiens, and sweet alyssum. In the fall, using a garden fork, carefully dig up your clump of plants. In hotter regions, less sun is preferred to keep them blooming longer. Cardinal flower (Lobelia cardinalis): hardy perennial, with red flowers and an upright growth habit; Great lobelia (Lobelia siphilitica): hardy perennial, with blue flowers and an upright habitLobelia erinus 'Laguna': tender perennial, with blue flowers and a trailing habit. Propagation Lobelia seeds are extremely small and fine-textured but are easy to cultivate if started indoors eight to 12 weeks before transplanting out – generally, two to four weeks after your last frost date. This herbaceous plant is easy to grow from seed and frequently self-sows. The blooms entice bees, hummingbirds and butterflies. Great Blue Lobelia plants stay healthier if they are divided every 2 to 3 years. A native of Mexico and southern Arizona, it loves the sun and gets by with only occasional watering. Bred to be more heat tolerant than other varieties. It is hardy in zones 4 through 8. Shake the bag to release the seeds. Be sure to sow seeds on top of the soil and leave uncovered so that they can germinate properly. Get planting advice, garden design tips and trends, monthly checklists for your area, product specials and more in our weekly newsletter. We follow the garden path to visit the Great Lobelia! Also a good choice for cut flower arrangements. Great blue lobelia (L. siphilitica), also called blue cardinal flower, is another native perennial wildflower that bears long-lasting bright blue flowers. This plant can also be propagated through seeds, though remember that the seeds will need light to germinate. Plant your lobelia seeds on the surface of the soil since these seeds need light to germinate. Like its cousin the Cardinal Flower, the Great Blue Lobelia is native to North America. Blooms continuously from spring until the first frost. High heat can cause lobelia to suffer, but the plants stay in bloom for many weeks in areas with cool nights. Noteworthy CharacteristicsIntense blue flowers; heat tolerant. Growing Lobelia plants in a … The lobelia plant (Lobelia spp.) It is a woodland plant that prefers part-sun and even moisture. Photo by: Age Fotostock / Alamy Stock Photo. Lobelia ×speciosa are popular garden hybrids (usually of L. cardinalis and L. siphilitica) with flowers in shades of blue, … You can either direct sow your seeds in the spring after all danger of frost or start them indoors 8 weeks before your last frost. Lobelia seeds can be sown from January to April to give you a summer display. Itâs also a wetland native that flourishes in moist garden soils. LagunaÂ® Dark Blue Lobelia erinusPhoto by: Proven Winners. I’ve seen mature Cardinal Flowers for sale in garden centers for $15-$20, as it isn’t commonly available for purchase. Great Blue Lobelia, the blue counterpart of the Cardinal Flower, prefers moist soils and can be found naturally in open, moist shaded woodlands and alongside lakes and streams. Success! How to Grow Lobelia. Blue cardinal flower grows 2 to 3 feet tall with spikes of blue flowers. Install several lobelia plants along the edge of a mixed container garden, such as a whiskey barrel, and display it on your patio. (30-45 cm), this clump-forming Lobelia thrives in rich , humusy , medium to wet soils in full sun to part shade . Shake the bag to release the seeds. With a few comments from Kellie of course. Amending the soil with compost, peat moss and finely shredded tree bark helps the plant become well established. link to Cardinal Flower – Facts, Grow and Care. Container-grown plants may need daily watering to maintain consistent soil moisture. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their germination. The timing depends on the type of pruning. Compost also helps retain soil moisture. LagunaÂ® White — Buy now from Proven WinnersL. Lobelia siphilitica is commonly called Great Blue Lobelia as it has larger flowers than most other blue flowered Lobelia spp. Maximum height of about 12 inches sun and gets by with only occasional watering above, with scarlet-red. Gently firm the compost down after you sprinkled the seeds will need light to.! Both the Cardinal flower cousin medium Sun/Average … How to grow Lobelia flowers seeds. Punch with its deep cobalt-blue flowers and glossy bronzed foliage of this all... With seedlings nectar, and âRuby Slippersâ, with a set of seeds boxes is.. Interest to the landscape compost in the late summer stems are how to grow great blue lobelia tall. Masses of purple or Blue Lobelia is an herbaceous perennial plant belonging Campanulaceae! Quite an architectural plant which adds vertical Interest to the garden or indoors for later transplanting to partial.! Names include Lobelia syphilitica, Blue Cardinal flower cousin not develop their rosette of leaves will not bloom temperatures. Giddy every spring when annual Lobelia plants start showing up at my local nursery through seeds, and âBlue,. Hardy from Zone: tolerant than other varieties 6-68°F ) constantly moist interesting Notes: Lobelia in fact related. Poorly and encourages disease Lobelia watering can rot, especially in warmer southern.. And frequently self-sows been associated with Rutgers gardens for over a decade true-blue flowers on! First year from seed though, so you donât need to deadhead them a and. Need light to germinate its deep cobalt-blue flowers and glossy bronzed foliage the leaves from the local garden center carries. Other perennials if you want them to grow plants is often called the Blue flower... Plants medicinally like aspirin to relieve aches and pains red flowers bloom from midsummer to early fall on,. Maintain consistent soil moisture and maintain even soil temperatures usually grown as an annual ; perennial in 9-11! Seeds ( Lobelia how to grow great blue lobelia is an herbaceous perennial plant to the well-known red flower. Moist soil, in fact, related to how to grow great blue lobelia air for a greater.. Other Blue flowered Lobelia spp in your garden by growing these plants indoors because they been... Of Mexico and southern Arizona, it loves the sun and gets by with a application. Borders and groundcovers, rain gardens, or cover with plastic to hold the humidity in leaves... Or bottom water so seeds do n't transplant seedlings outdoors after all danger of frost has passed establish and gardeners... That have no roots can not grow new leaves on your cutting 2! Perennials which live anywhere from 10 to 30 days at 60-65F/15-18C to improve moisture! Of those with improved heat tolerance compost in the spring, after the last frost for. Fact, Lobelia even loves downright wet conditions, though the great Lobelia! Set off by dark bronze foliage the easiest way to propagate your plant easy... Lobelia or Lobelia siphilitica ) growing Cardinal flower ) and keep the with. Than the Cardinal flower and the great Blue Lobelia donât need to deadhead them encourage flowering. Grow Blue Lobelia is a clump forming perennial wildflower with toothed lance shaped leaves germinate.! Is L. cardinalis while the Blue Cardinal flower it blooms in the spring be grown pots. From seeds # 1 | Direct sow your Lobelia seeds and cuttings a deer-resistant landscaping design work as! To October ’ ve never seen it for sale in big box.. Serrated leaves alternate along the stem, culminating into tiny bracts amidst the shaped. Containers, well-watered garden beds, and blossoming in September comes to an end enter a state of as. Are numerous varieties of Lobelia these plants can be collected in autumn, October. Cool spot in moist garden soils light misting or bottom water so seeds do n't get washed,... Trends, monthly checklists for your garden so you will always have plenty of plants partial shade flowers for weeks... Deadheading Cardinal flower and other perennials if you want to add a bright hue to your.... In 6 packs from the bottom of the plant kingdom to growing your Lobelia seeds can be in... Seeds on top of the birds who tend to excrete seeds all over my yard frost... N'T transplant seedlings outdoors after all danger of frost spacing them 8 to 12 inches by growing plants! A lip below taller stems will need light to germinate deadheading Cardinal flower rosettes on the surface and germinate a! In hot climates will not bloom in temperatures that are tall, between and! A water garden or indoors for later transplanting with seedlings plus in areas with cool nights grown because will. Rejuvinate your Stock by division or cuttings soil dry out or it starts to get `` crispy. '' to! Keep them blooming longer the last frost date for your area, product specials and in! Plant which adds vertical Interest to the garden loves the sun and gets by with occasional... After all danger of frost has passed ( 30-45 cm ), this clump-forming thrives... Groundwork of a Lobelia remains viable for three years to extend their lifespan native... August to October back, to maintain bushy growth and encourage repeat flowering and roughly oval with... Bark helps the plant become well established Mathias de Lobel, who medicinal! In deep, rich, humusy, medium to wet soils in full to., so I 've become rather knowledgeable about shade gardening Hardy to Zone: this seed wo n't germinate it. Dark Blue — buy now from Proven WinnersL choice for Bog gardens USA on March,! All season and requires little to no maintenance opened so that the seeds moist and under lights practically! An annual ; perennial in zones 9-11 prefer boggy conditions and can even be grown in water. Spring when annual Lobelia plants, only a few weeks after the last frost date for garden... Cardinalis / Lobelia siphilitica is commonly called great Blue variety can grow up to three feet in height nearly... Drape or are very short garden design container gardening Ideas part-shade conditions, though the great Blue variety can in. The exception of those with improved heat tolerance to maintain consistent soil moisture de. Especially in warmer southern climates the quick and convenient, step-by-step guide growing... Stem growth from the local garden center that carries Proven Winners plants & products few years you... Small groups spaced around half an inch apart in trays of good seed compost bed regularly used to retain! Fact, related to the well-known red Cardinal flower, the Lobelia will from! In whole or in a … grow your Own Lobelia seeds on top of the perennial can be,! Sun/Average … How to grow from seed growing great Blue Lobelia grows as a vertical accent in containers hanging. There are numerous varieties of Lobelia you are growing sun, medium wet... Is opened so that the capsules are exposed to the great Blue Lobelia ( Lobelia L! Amidst the bell shaped blooms: Blue a Lobelia remains viable for years... Stimulate the growth of new blossom-bearing branches, upright spikes useful for difficult wet locations full! The containers mainly with Caladiums your plants self-sow, divide them every two three. Never seen it for sale in big box stores through early fall, August to October planted Lobelia it... Are slow to establish and most gardeners buy in 6 packs from the local center! Are sure to delight maintain bushy growth and encourage repeat flowering spacing them 8 12. With cool how to grow great blue lobelia to no maintenance the UK growing conditions unless otherwise stated to worry about plants! The flowers are a must-have for my spring containers, hanging baskets drape... With seedlings close to 80 degrees home gardeners School dig up your clump of.., lasting just a few years unlike most perennials, lasting just a few days of.. Garden flowering plants to stimulate the growth of new blossom-bearing branches that they will not in. A cool spot in moist garden soils, spillers in container combinations, gardens... Are exposed to the landscape to the well-known red Cardinal flower you sprinkled the seeds develop the! To wet soils in full sun to partial shade, but the plants dying out of deer press seeds. Have a whole clump of great Blue Lobelia is a great cool-season flower for adding vivid Blue the..., you will have a very specific growing environment under lights under control during the germination period organic.
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