Photo by Melody

PlantFiles: Butterfly Weed
Asclepias tuberosa var. clay

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Family: Apocynaceae (a-pos-ih-NAY-see-ee) (Info)
Genus: Asclepias (ass-KLE-pee-us) (Info)
Species: tuberosa var. clay

4 members have or want this plant for trade.

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Category:
Perennials

Height:
24-36 in. (60-90 cm)

Spacing:
15-18 in. (38-45 cm)

Hardiness:
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun

Danger:
Parts of plant are poisonous if ingested

Bloom Color:
Orange

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Non-patented

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Seed Collecting:
Bag seedheads to capture ripening seed
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored

Click thumbnail
to view:

By treesmoocher
Thumbnail #1 of Asclepias tuberosa var. clay by treesmoocher

Profile:

2 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive treesmoocher On Feb 12, 2012, treesmoocher from Spencer, WV wrote:

I have not bought this plant; it was already growing on my site. But there's no doubt it's growing in heavy clay, and that it's happy, healthy and beautiful. I now have several of these in my vegetable garden, because I never eradicated them and the roots apparently survive below tilling depth. Also successfuly transplanted one into my flowerbed last year. So I can't say how it might compare to a non clay tolerant version. But I have saved seeds, which I could mail someone.

Positive mcrousse On Jun 6, 2009, mcrousse from Holly Springs, NC (Zone 7b) wrote:

So far so good - this is the second year I've had this plant. I have it on a clay slope in one of the hottest driest spots in my yard. It has had no trouble at all with our heat and humidity and erratic winter weather. It has not yet bloomed as I think it needs to grow a bit first from the size you receive from the nursery. It has more stalks this year so I am thinking it might bloom later.

Edit: July 2010 this plant finally bloomed, 3 years after it was planted. It looks just like a regular asclepias tuberosa bloom and survived just fine with 3 days over 100 degrees and high humidity.

Regional...

This plant has been said to grow in the following regions:

Chaska, Minnesota
Buffalo, New York
Hampstead, North Carolina
Holly Springs, North Carolina
Spencer, West Virginia



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