Lobelia cardinalis Seeds (Cardinal Flower)

The Cardinal Flower (Lobelia cardinalis), also known as the Red Lobelia, is a visually striking plant species recognized by its vibrant scarlet flowers. Growing up to 3 feet in height, this perennial plant thrives in the USDA hardiness zones 2 through 9. It prefers moist or wet areas, making it an excellent choice for rain gardens or alongside ponds. The Cardinal Flower attracts hummingbirds and butterflies with its nectar-rich blooms. To grow this stunning plant, Lobelia cardinalis seeds can be sown indoors before being transplanted outside, or directly sown in the desired location after the last frost.

Growing Lobelia cardinalis from Seed

• Growth cycle: Perennial
• Watering: Medium
• Sunlight: Medium Sun
• Suitable climates: Humid Continental, Humid Subtropical, Marine West Coast, Mediterranean, Subarctic
• Where to grow: Indoor & Outdoors
• Flower color: Red

Germinating Cardinal Flower Flower Seeds

To germinate Lobelia cardinalis, start by sowing the seeds on the surface of a moist growing medium. Maintain a temperature of around 70-75°F (21-24°C) and provide indirect light. Keep the soil consistently moist until the seeds germinate, which usually takes about 10-14 days.

We source all of our Lobelia cardinalis seeds from a small greenhouse facility based in southeastern Maine and store them in a dark, temperature-controlled environment before shipment. You’ll find that our fresh Cardinal Flower seeds are much easier to germinate than the mass-produced packets of flower seeds found in stores! If you have any trouble growing Cardinal Flower seeds, we’re happy to send you additional gardening tips. In the (unlikely) event that your Lobelia cardinalis seeds do not germinate at all, we’ll give you a full refund, no questions asked.

We offer this variety on Etsy, eBay, and Amazon, as well!

Shipping & returns

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