Lobelia, Great Blue - 3" Starter Pot - Lobelia Siphilitica

Name: Great Blue Lobelia

Scientific Name: Lobelia siphilitica

Family Name: Campanulaceae

Product Description:

Lobelia siphilitica is a sturdy, clump‑forming perennial with upright stems topped by dense spikes of deep blue to violet tubular flowers. Blooming from late summer into fall, it provides valuable color when many natives are winding down. The foliage is lance‑shaped and arranged alternately along the stems, giving the plant a clean, vertical habit. While often found near water, it prefers soils that are consistently moist rather than submerged, making it more adaptable to garden conditions than its red cousin Lobelia cardinalis.

Origination: Native to eastern and central North America (Also native to Florida!)

Historic Uses: Traditional herbal use, ornamental, pollinator support

Height: 24–36 inches tall

Hardiness Zone: USDA Zones 4–9

Flower Color: Blue to violet

Maturity: Perennial; blooms late summer to early fall once established

Other Names: Great Blue Lobelia, Blue Cardinal Flower

Growing Conditions:

Grow in full sun to partial shade. Prefers moist, rich soils and tolerates periodic wetness, but does not thrive in standing water. Ideal for rain gardens, streambanks, and consistently damp borders. Water regularly during dry spells. Allow seed heads to mature for naturalizing or cut back after flowering to maintain shape.

Ships in 3" pots. You will receive a plant similar to the ones pictured, though size and fullness may vary. Please understand that shipped plants have bumpy rides. A few broken leaves or small stems are normal during shipping and are not considered damage. Broken stems can be rooted once the cut end dries to start new growth. Plants may arrive semi‑dormant, and in winter they may naturally drop a few leaves. If your plant arrives rotting or dead, we will replace it. Please contact us with photo proof within 24 hours of delivery. After 24 hours, plant care becomes the buyer’s responsibility, though we’re always happy to answer questions and help you succeed. We also add brief instructions on getting started when you open your box. We want our plant babies to have happy new homes! 🥰

Heat packs are available to purchase in our shop for cold-sensitive plants. Keep in mind some plants we carry are very tropical and even cold, not freezing, temperatures can kill them. 📌IF YOU EXPECT COLD WEATHER, PLEASE PURCHASE A HEAT PACK! 📌 These are necessary for winter shipping, so I sell them at cost. I won't refund or replace any frozen plants unless you buy one!

❗Please Read!❗

Items cannot be shipped to CALIFORNIA or ARIZONA easily due to state import laws. All plants shipped there must be inspected before entry. Seed-grown herbaceous plants may not survive transit. I cannot guarantee herbaceous plant orders from these states, so order at your own risk. Hoyas, cacti, and succulents are an exception. My apologies for any inconvenience.