Lobelia siphilitica Seeds

Blue Cardinal Flower Seeds

Lobelia siphilitica (Blue Cardinal Flower) is a showy moisture-loving wildflower with light to dark blue flowers in late summer.
Zones3 - 8
Mature Plant Size24-36" tall
Bloom TimeSummer
ShippingMost orders ship within 48 hours. Learn More…
SizePacket
SKUHC013275

USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

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Out of stock
SKU
HC013275
Details
Lobelia siphilitica (Blue Cardinal Flower) is a showy moisture-loving wildflower with light to dark blue flowers in late summer. A tall grower, provide moist to wet growing conditions in partial shade. Deer resistant, it’s a nice pond-side or bog plant. USDA zones 4-9.
More Information
SKUHC013275
Common Name
Blue Cardinal Flower Seeds
Botanical Name
Lobelia siphilitica
Item Package Size
Packet
Flower Color
Blue
Bloom Time
Summer
Mature Height
24-36" tall
Wildflower Mix or Specie
Species
Ships As
Seed
Ideal Region
West
Zones
3, 4, 5, 6, 7, 8
Days To Germinate
Cold Stratification - 60 days/Regular Surface
Native To
North America
Seeds Per Pound
6400000
Seeds Per Packet
750
Ships To Canada
Yes
Planting Guides

Step-by-Step Wildflower Seed Planting Instructions

  1. Check for your last frost date and plant after this has passed. Choose a spot on your property that gets 6 or more hours of direct sun a day unless you are planting seeds for shade.
  2. Prepare your soil by clearing the area of all existing growth. Simply dig up everything that is growing, turn the soil and rake the area flat. If this is an area that has never before been gardened, you may need to till the area up to remove growth.
  3. Mix the seeds with sand* for better visibility and scatter the seeds directly on top of the soil. If you are sowing a larger area, we recommend using a seed spreader; if not, you can sow by hand.
  4. We recommend lightly compressing the seeds into the soil, making sure not to bury them. You can either walk on them, use a board or if you are sowing a larger area, rent a seed roller.
  5. Water so that the soil is moist, not soaking wet, until the seedlings are about 4-6" tall. After that, the seedlings will survive on natural rains. If you are experiencing very dry weather, we recommend watering occasionally.
Get more information on Planting Wildflowers
View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.
Shipping
Most orders ship within 48 hours.

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Orders for in-season products ship within 48 hours or less. Depending upon your order date, we may hold your shipment to combine it with other products on your order, if applicable. See our shipping information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (800) 925-9387 or contact us by email.

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Over $10015%

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Over $100$39.95

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