15% OFF ALL SEEDS WITH COUPON CODE BLACKFRIDAY

We're getting ready for the new year!

We have been busy packing our favorite flower seeds and gearing up for another amazing year. Stay tuned for back in stock seeds and plants for 2025 plus over 75 new varieties!

Seed Packet

Lobelia - Cardinal Flower

Name: Lobelia - Cardinal Flower
Brand: Select Seeds, Co.
SKU: S072
Price: 3.5 USD
Availability: InStock

Lobelia cardinalis

This native hummingbird favorite is easy to grow and makes the transition from its native stream-side habitat to the humus-enriched garden bed seamlessly. In late summer, blooming spires of sparkling red flowers punctuate wet meadows and pond edges, their brilliance evident even from a distance. In the early 1800s cardinal flower was gathered by Shakers to add to their store of medicinals.

SKU #S072

Caution: Poisonous. The purchaser assumes all liability related to the use of this product.

$3.50

Details

Approximate Seeds Per Packet

535

Lifecycle

Perennial

Perennial Hardiness Zone

Mature Size

2-4' h x 1' w

Sun

Full sun to partial shade

Soil

Rich, moist, well-drained

Season

Summer to fall

Color

Red spires of bloom

Features

Deer Resistant

Attracts Butterflies

Attracts Hummingbirds

SOWING INSTRUCTIONS

Depth:

Surface sow and press in lightly; requires light to germinate.

Sprout Time:

30-50 days

Starting Indoors:

Recommended. Start indoors in late winter. Cover with a humidity dome or a light sprinkling of vermiculite to retain humidity until germination occurs. Keep at 70F. Alternately, while not essential, a cold, moist stratification period may increase germination. Sow in pots, cover with plastic, refrigerate at 36-40°F for 3-4 weeks, then bring into 70°F.

Starting Outdoors:

Not recommended, as seeds and new seedlings are very tiny and delicate. Possible to wintersow in late winter into pots placed in full shaded conditions and covered with a wire screen to keep out mice and voles. Check for water as needed.

WHEN TO SET OUTSIDE

At last frost date.

PLACEMENT & CULTIVATION

Lobelia was a prize brought from Canada to France in the early 1600s, and it soon made its way into early English gardens. A hummingbird magnet that will also attract butterflies, it grows best where soils are consistently moist, including water gardens and edges of streams and ponds, where it tolerates flooded conditions in spring. Add about an inch of mulch or compost to borders to help conserve moisture, keeping away from the plant's crown, and wait until spring to cut back. A short-lived perennial that can be renewed by seed or by dividing every 2-3 years in spring in zones 6 and in autumn in zones 7-9. Self-sows. Caution: toxic if ingested in significant amounts.

Final Spacing:

1-2'

Water Requirements:

Medium Water Use

Watering Details:

At least 1" per week. Keep evenly moist, but not soggy, allowing the soil to dry slightly between waterings.

Soil pH:

Most pH levels are tolerated.

Fertilizer:

Mix in 1-2" inches of compost prior to planting and top-dress with a thin layer each spring.

Diseases & Pests:

Lobelia can be susceptible to leaf spot and crown rot, but this can be avoided by placing in a location with plenty of air flow, watering mornings only and avoiding overly saturated soils. Slugs can occasionally be a problem, but can be treated by applying pelletized iron phosphate. Diatomaceous earth can also be used.