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Growing Lobelias

Growing Lobelia

Cardinal Lobelia

Cardinal Lobelia item #13092


Cardinal flower, Lobelia cardinalis, is a North American native perennial with spikes of intensely red flowers in late summer. The flowers are very attractive to hummingbirds and butterflies. Plants are tolerant of moist to wet soil conditions and can be used around ponds, water features, or in rain gardens. Hardy in zones 3 to 9.

How To Plant

Plant outdoors in spring after the danger of frost has passed, slightly deeper than when grown in the pot.


For full sun to part shade. Better in morning sun than afternoon sun, and prefers part shade in hot climates. Best in moist soil rich in organic matter and tolerates wet soil. May reseed, but not aggressively.

Fertilizer Recommendations

A moderate feeder that benefits from regular fertilization. Use full rates of  ALGOplus Flowering Plant 4-6-7 liquid fertilizer or Neptune Fish & Seaweed Fertilizer 2-3-1.

Common Problems

Free from serious problems. Not eaten by deer or rabbits.

Alternative Products

Other perennials for moist to wet soils are cinnamon fern, hibiscus, and ligularia.

Product Recommendations

Other perennials that attract hummingbirds include phlox and monarda.

Lobelia Facts

Cardinal flower was used as a medicinal herb by many Native American tribes. The genus name Lobelia is in honor of French botanist and physician Matthias de l'Obel (1538 to 1616).



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