Great Blue Lobelia

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Shipping begins the week of March 16th, 2020 Learn More…
As low as $12.98 Sale $8.44
In stock
SKU
AM016140

Video

 
Great Blue Lobelia (also called Blue Cardinal Flower) is a tough, hardy perennial with large leaves and gorgeous, light blue blooms. An easy to grow native that will thrive in a partly sunny, moist spot in your garden, this Lobelia will spread and multiply when given the chance. Blooms appear late in the season and provide important nectar to bees, butterflies and hummingbirds. Deer and rabbit resistant. (Lobelia siphilitica)
Zones 4 - 9
Advantages
Easy To Grow
Attract Butterflies
Attract Hummingbirds
Bee Friendly
Deer Resistant
Rabbit Resistant
Native
Good For Cut Flowers
Multiplies / Naturalizes
Light Requirements
Full Sun
Half Sun / Half Shade
Full Shade
Mature Plant Size24-36" tall. , 10-18" wide.
Bloom TimeMid to late summer
SKUAM016140

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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Plant Information

Blue Cardinal Flower is actually quite different in growth from its wildflower counterpart. It is a tougher, heftier plant with somewhat coarse, larger leaves, and the flowers appear in the leaf axils, unlike its elegant cousins red flowers that are in leaf-free flower spikes, held high above the plant. But the blue flowers are lovely and plentiful. Best of all, this plant is not as picky as to growing conditions. It is perfectly happy in any perennial garden with half sun to part shade. And it is simple to propagate. Let some of the flower heads go to seed in the fall, and you'll have a dozen new plants coming up next spring.

Blue cardinal flower makes a great background for smaller wildflowers, since several together form a wonderful screen-like clump of towering plants with blue flowers for a long period.

Oh, and the name. The botanical species name, syphilitica, comes from the Native American belief that this plant was a cure for syphillis.

More Information
Associated SKUsAM016140
AM014077 (Plant - 3" Pot)
AM014076 (Bag of 3) - Out of stock.
Common Name
Blue Cardinal Flower
Botanical Name
Lobelia siphilitica Great Blue
Zones
4, 5, 6, 7, 8, 9
Light Requirements
Full Sun, Half Sun / Half Shade, Full Shade
Flower Color
Blue
Mature Height
24-36" tall.
Estimated Mature Spread
10-18" wide.
Growth Rate
Medium
Bloom Time
Mid to late summer
Planting Depth
Crown of plant should rest just at or above the surface after watering in.
Ships As
Potted Plant
Foliage
Upright stiff green leafy stalks with finely toothed lance shaped leaves.
Soil Type
Loamy Soil, Clay Soil, Moist/Wet Soil
Soil Moisture
Average, Moist / Wet, Well Draining
Tolerates
Wet Sites
Advantages
Easy To Grow, Attract Butterflies, Attract Hummingbirds, Bee Friendly, Deer Resistant, Rabbit Resistant, Native, Good For Cut Flowers, Multiplies / Naturalizes
Additional Information
Plant near ponds, bogs or well draining wet areas.
Ideal Region
Northeast, Southeast, Midwest, West
Planting Time
Spring / Summer, Fall
Neonicotinoid Free
Poisonous or Toxic to Animals
All parts of plant are poisonous if ingested!
Item Unit
Plant
Ships to Hawaii, Alaska & Canada
No
Shipping
ZoneShipping Status
Zone 2Shipping begins the week of May 11th, 2020
Zone 3Shipping begins the week of May 11th, 2020
Zone 4Shipping begins the week of May 11th, 2020
Zone 5Shipping begins the week of April 27th, 2020
Zone 6Shipping begins the week of April 13th, 2020
Zone 7Shipping begins the week of March 30th, 2020
Zone 8Shipping begins the week of March 23rd, 2020
Zone 9Shipping begins the week of March 16th, 2020
Zone 10Shipping begins the week of March 16th, 2020

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. Some perennials are shipped as potted plants, some as perennial roots packed in peat.  The ‘Plant Information’ section describes how that item will ship. All perennials and spring-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.

Perennials and spring-planted bulbs are shipped at the proper planting time for your hardiness zone. Perennial and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. 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 (877) 309-7333 or contact us by email.

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