Great Blue Lobelia
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Lobelia siphilitica
Lobelia siphilitica, commonly called great lobelia or blue cardinal flower, is a perennial which typically grows in moist to wet locations along streams, sloughs, springs, swamps, meadows and in low wooded areas. A clump-forming perennial which features light to dark blue, tubular, 2-lipped flowers. Flowers arise from the upper leaf axils forming a dense terminal raceme atop stiff, unbranched, leafy stalks typically rising 2-3' tall. Finely-toothed, lance-shaped, light green leaves (to 5" long). Late summer bloom period.
Easily grown in rich, humusy, medium to wet soils in full sun to part shade. Needs constant moisture. Prefers part shade in Texas, but will tolerate full sun in colder, northern climates. Divide clumps in spring as needed. May self-seed in optimum growing conditions, forming attractive colonies.
Height: 2'-3'
Spread: 1'-1.5'
Bloom: July-September
Light: Part Shade, Dappled Shade
Water: Medium, High
Zone: 4, 5, 6, 7, 8, 9
Origin: Texas, United States
Spring Shipping:
Orders are shipped within 7-10 business days. We will email you if there are expected delays.
When you order plants from our nursery, you can expect them to arrive in the best possible condition. Our team carefully packs each order using sturdy, biodegradable packaging materials.
Your plants' appearance may vary depending on the season and their current growth stage. We may cut back the leafy growth of some plants to prepare them for shipment and transplanting.
5 Gallon and Up: Any plant purchased to ship over 5 Gallons will be shipped bare root. This means we will remove the plant from its original pot, remove the soil surrounding the roots, and wrap the roots with a biodegradable plastic bag. This reduces weight and the likelihood of damage during shipping.
Once your plants arrive, it is essential to plant them as soon as possible. This will help them rebound and thrive. If you cannot plant immediately, water regularly and keep the roots off heat-conducting surfaces.
Newly transplanted plants often require more water until their roots are well established. Plan to water them 1-3 times weekly for the first few months.
