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Lobelia cardinalis Cardinal Flower

Ohio Native Plant Natural Range

To view the natural range of Lobelia cardinalis visit the USDA Natural Resources Conservation Service website. Native Plant of the Year - LEAP (Lake Erie Allegheny Partnership for Biodiversity) - Native Plant of the Year 2012
A dozen Cardinal Flowers against a black background.
Cardinal Flowers - Roger Dalin

Cultivation Information Lobelia cardinalis

Hummingbirds by By Jim Wohl
Height - 2-3 feetFlower Color - RedBlooms - July - SeptemberSun - Sun to light Shade Short-Lived Perennial - Self seedsHardy Zone - 4 to 9Soil -Moist to Wet, Rich with HumuspH -4.0-6.0 Family – Campanulaceae
Rain Gardens - Suitable for rain gardens and marshy locations. Plants will do well in full sun, but they need a reliable source of moisture. In other words, you need to water them, or they will indeed suffer.
For your Patio - Pot Cardinal Flowers in large pots, then enjoy them on your deck o r patio. You will gradually earn the trust of the local Hummingbird population. For winter storage, either set the decorative pot in a second pot and fill the space with leaves or hull (dig in) into the top of your compost pile in the fall.
Territorial - Hummingbirds are very territorial, I make a point to grow Cardinal Flowers in various gardens. This way there is no fighting!
Welcome to the Dahlin's By Roger Dahlin
Seed Provenance Lobelia cardinalis
Nodding Onion Gardens - 2012 to present, Native Bee-Ginnings, Pennsylvania - 2019, 2025, Prairie Moon Nursery, Winona, MN - 2010 - 2011, 2025

Wildlife Significance Lobelia cardinalis

Lobelia cardinalis Roger Dahlin
Nectar Source - Butterflies, hummingbirds and Bumblebees.
Moths - Flowers that attract humming birds attract Sphix moths, both have a long "tube like" mouthpiece that works like a straw. Moths are "dinner" for birds that feed at night, like Night Hawks and Whiporwills.
Birds - Butterflies, moths and skippers are all a high protein food source for birds
Deer - Are not fond of this plant
For detailed information, visit the Illinois Wildflower site
Propagation Notes Lobelia cardinalis
Stratifying Seeds
Perennial - Sources mention Cardinal Flowers are short-lived perennial. I have found in the right place they live for several years. Also, it is important to stay out of the garden in the spring, allowing seedlings a chance to mature. Lobelias need warm temperatures to germinate, so it is wise to be patient with them. Collecting Seed - Wait until seed is dark brown, dry in a paper bag before cleaning and storing
Outside - Seeds seen to germinate best when temperatures reach 65 to 70º F. Seeds need light to germinate, don't cover them with dirt
Supplies Needed for Seed Stratification 1. Zip lock plastic bag2. Few tablespoons of Vermiculite3. Dampen vermiculite - not soggy4. Store in refrigerator for 60 days
Seeds require light and cold, moist storage in order to germinate
Collecting Seed
Seed is still green and not ready to collect
Wait until seed is dark brown, dry in a paper bag before cleaning and storing
It might interest you to know
Cardinal Flower - Has no scent and is primarily propagated by Hummingbirds. Since birds have no sense of smell; it is the deep red color that attracts humming birds. Worth Noting - Hummingbird's long bill reaches deep down into the flower, unlike most insects and bees Historically Speaking - The Iroquois Indians in the State of New York used the plants for cough medicine.
Contact
noddingoniongardens@gmail.com
Location
Columbia Station, Oh 44028 US
Ohio Department of Agriculture Nursery Inspection 2009 - 2026
Copyright © All rights 2026

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