Lobelia Plants. Like its cousin the Cardinal Flower, the Great Blue Lobelia is native to North America. The Cardinal Flower is L. cardinalis while the blue cardinal flower is L. siphilitica. In spring, after the danger of frost has passed. erinus. A North American native that is perfect for the late summer garden, Lobelia siphilitica (Great Blue Lobelia) is a popular, upright perennial which produces long-lasting spikes of bright blue flowers atop a finely-toothed, lance-shaped foliage from late summer to mid fall. If growing by seed indoors, start plants 10 weeks prior to last frost date for your area. A rare true blue flower with improved heat tolerance. If perennials are covered with heavy mulch over the winter, the roots can rot, especially in warmer southern climates. Developed by plant breeders to stand up better to hot summers than other trailing lobelias Hummingbirds love the bright red flowers. The bees act drunk on nectar, and the flowers are practically guaranteed a thorough pollination. Growing Lobelia plants in a … 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. Instead of deadheading the flowers to make the plants appear neater, allow some to go to seed. Sep 13, 2019 - Great Blue Lobelia, Lobelia siphilitica, or blue cardinal flower grow 2-3 ft. tall with dark blue tubular flowers with 3-lobed lower lip and 2-lobed upper lip Growing Lobelia From Seed. Usually grown as an annual; perennial in Zones 9-11. My guess would be it was courtesy of the birds who tend to excrete seeds all over my yard. Perennial lobelias will often self-sow given the right conditions and usually bloom the first year from seed. How to Grow Lobelia. With a sharp knife, cut the side rosettes from the main plant, making sure that each one has its own root system, and plant them in another part of your garden, 8 to 12 inches apart, or in an entirely new location. Techno® Blue is covered in intense, cobalt blue flowers. 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. ProblemsUsually trouble-free. In the fall, using a garden fork, carefully dig up your clump of plants. Laguna® Dark Blue Lobelia erinusPhoto by: Proven Winners. Lobelia erinus doesn’t like dammed-up water at all. 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. 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. Great blue lobelia (L. siphilitica), also called blue cardinal flower, is another native perennial wildflower that bears long-lasting bright blue flowers. Reproduction in whole or in part without permission is prohibited. Keep weeds under control during the lobelia growing season. Use light misting or bottom water so seeds don't get washed away, or cover with plastic to hold the humidity in. I was introduced to the Great Blue Lobelia when it popped up unexpectedly in my garden. Most lobelias can grow in part-shade conditions, though the great blue tolerates more shade than its cardinal flower cousin. Blue Lobelia or Lobelia Siphilitica is an herbaceous perennial plant belonging to Campanulaceae family. Avoid pruning back or deadheading cardinal flower and other perennials if you want them to reseed naturally. Compost also helps retain soil moisture. Annual bedding lobelias will grow in both full sun or partial shade. Suitable for any garden type. More about the newsletter. Use your garden shears to cut several 4 to 5-inch pieces of stem growth from the donor Lobelia plant. Annuals reach a maximum height of about 12 inches. Noteworthy CharacteristicsIntense blue flowers; heat tolerant. She has been associated with Rutgers Gardens for over a decade. Lanceolate serrated leaves alternate along the stem, culminating into tiny bracts amidst the bell shaped blooms. They can also be grown in containers set in a tray of water on a patio or deck. 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. Laguna® Sky Blue — Buy now from Proven WinnersL. Great Blue Lobelia and Caladiums: another angle, They are sharing the containers mainly with Caladiums. 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. 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. But however it got there, I have enjoyed its beautiful blue flowers for many years. 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). The tubular blue flowers appear in late summer through early fall, August to October. Trailing forms are popular in hanging baskets, window boxes and containers. * Required FieldsWe will never sell or distribute your email to any other parties or organizations. Plants enter a state of dormancy as weather grows cooler, indicated by a dying back of flowering parts and taller stems. Dazzling rose-pink blooms are set off by dark bronze foliage. Perennials can grow to be 4 feet high. And although cobalt blue may be their signature hue, you’ll also find lobelia flowers in scarlet red, lilac, rose, and vibrant tropical colors. document.write(theDate.getFullYear()) Lobelias are considered to be easy to grow plants. The capsules that have Reblooming; Naturalizing; Rain Garden; Cut Flower; Bog; Exposure. New plants develop in the form of leafy rosettes on the sides of the parent plants. As native plants Lobelia Great Blue grow easily and are adaptable to moist shady areas. , to improve the moisture holding – especially on free-draining soils winter in pots shade and soil that constantly! To let your plants to sustain them throughout the summer until the frost! Backyard which is how to grow great blue lobelia and on the surface of the Lobelia apart from the local garden.... Water regularly to keep them blooming longer its semitrailing, mounding habit is a woodland that! Surface and germinate at a temperature between 15-20°C ( 6-68°F ) Flemish botanist Mathias Lobel.... 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