Asclepias tuberosa L.

Butterfly weed (en)

Species

Angiosperms > Gentianales > Apocynaceae > Asclepias

Characteristics

Ascending or erect, 3–7 dm, rather coarsely hairy, simple to much branched above; lvs numerous, alternate or on the branches opposite, linear to lanceolate or oblanceolate, 5–10 cm, cuneate to subcordate at base; juice not milky; umbels solitary and terminal to numerous; fls bright yellow to orange-red; cor-lobes 7–10 mm, the hoods 5–7 mm, greatly exceeding the gynostegium, nearly straight, erect, the lateral margins bearing an obscure tooth below the middle; fr 8–12 cm, erect; 2n=22. Prairies and upland woods, especially in sandy soil; s. N.H. to Fla., w. to Minn., S.D., Ariz., and Mex. June–Aug. Var. tuberosa, with the lvs typically widest above the middle, hence abruptly pointed, is the eastern phase of the sp., chiefly in and e. of the Appalachian Mts. in our range. Var. interior (Woodson) Shinners, with the lvs typically widest below the middle, hence tapering gradually to the tip, is more western, chiefly w. of the mts. in our range. Intermediates are abundant.
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A small shrub. It grows 60-90 cm high. It spreads 30 cm wide. It has a large tuberous root. It is a milkweed which does not have milky juice. It has a woody base and keeps growing from year to year. The stems are erect and hairy. The leaves are narrow and sword shaped. They are 10-14 cm long. They are on crowded stems. The flowers are orange coloured. They occur in heads. The fruit are pointed weed heads 15 cm long.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 0.3 - 0.5
Mature height (meter) 0.68 - 0.85
Root system -
Rooting depth (meter) 0.95
Root diameter (meter) 0.5
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a temperate plant. It grows in sandy areas but is best in rich peaty soils. It needs an open sunny position. It is resistant to frost but damaged by drought. It suits hardiness zones 3-9.
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Dry open sandy and gravelly soils in fields, hillsides, thickets, and open woods; sand dunes and grassy places by the sides of roads.
Light 6-8
Soil humidity 2-6
Soil texture 3-5
Soil acidity 2-7
Soil nutriment -
Hardiness (USDA) 4-8

Usage

CAUTION: It contains a glucoside asclepiadin. It is poisonous. Tender shoots, roots and young seed pods are cooked as vegetables. Flowers are used as a sweetener. The flower nectar crystallizes and can be eaten.
Uses environmental use fiber food food additive material medicinal oil ornamental poison
Edible flowers leaves nectars pods roots seeds shoots stems tubers
Therapeutic use Snake Bite Remedy (leaf), Heart Medicine (root), Laxative (root), Antirheumatic (External) (root), Gynecological Aid (root), Pulmonary Aid (root), Antirheumatic (Internal) (root), Other (root), Sports Medicine (root), Dermatological Aid (root), Orthopedic Aid (root), Tonic (root), Ceremonial Medicine (root), Respiratory Aid (root), Antidiarrheal (seed), Laxative (seed), Analgesic (unspecified), Expectorant (unspecified), Gynecological Aid (unspecified), Pulmonary Aid (unspecified), Ceremonial Medicine (unspecified), Dermatological Aid (unspecified), Misc. Disease Remedy (unspecified), Aperient (unspecified), Bronchitis (unspecified), Carminative (unspecified), Cathartic (unspecified), Colic (unspecified), Diaphoretic (unspecified), Diuretic (unspecified), Emetic (unspecified), Fungoid (unspecified), Hemorrhage (unspecified), Hysteria (unspecified), Panacea (unspecified), Pleurisy (unspecified), Poultice (unspecified), Sore (unspecified), Spasm (unspecified), Debility (unspecified), Medicine (unspecified), Sudorific (unspecified), Tonic (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seed or cuttings.
Mode cuttings divisions seedlings
Germination duration (days) 29 - 59
Germination temperacture (C°) 3 - 13
Germination luminosity -
Germination treatment stratification
Minimum temperature (C°) -35
Optimum temperature (C°) 14 - 24
Size -
Vigor -
Productivity -

Images

Habit

Asclepias tuberosa habit picture by tufty_jam_bean (cc-by-sa)
Asclepias tuberosa habit picture by Keith Gebhardt (cc-by-sa)
Asclepias tuberosa habit picture by Matthias Foellmer (cc-by-sa)

Leaf

Asclepias tuberosa leaf picture by William Coville (cc-by-sa)
Asclepias tuberosa leaf picture by Joe Gibeau (cc-by-sa)
Asclepias tuberosa leaf picture by Holly keller (cc-by-sa)

Flower

Asclepias tuberosa flower picture by Juseff Bubu (cc-by-sa)
Asclepias tuberosa flower picture by Jelly Fish (cc-by-sa)
Asclepias tuberosa flower picture by Nancy Schiano (cc-by-sa)

Fruit

Asclepias tuberosa fruit picture by Vicki Brown (cc-by-sa)
Asclepias tuberosa fruit picture by t. ray (cc-by-sa)
Asclepias tuberosa fruit picture by t. ray (cc-by-sa)

Distribution

Asclepias tuberosa world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:94704-1
WFO ID wfo-0000551830
COL ID H6RF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Asclepias tuberosa f. tuberosa Asclepias tuberosa var. tuberosa Asclepias tuberosa

Lower taxons

Asclepias tuberosa subsp. interior Asclepias tuberosa subsp. tuberosa Asclepias tuberosa subsp. rolfsii