Asclepias syriaca L.

common milkweed - Asclepias syriaca L. 07JL08
common milkweed - Asclepias syriaca L. 06AU14-03
common milkweed, Asclepias syriaca L - 13JL13-2

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common milkweed, Asclepias syriaca L - 13JL13-1

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common milkweed, Asclepias syriaca L - 10JN27-2

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characteristics

Grey-green perennial with fleshy leaves. Numerous fragrant blooms are usually flesh tone, but can be pale-yellow to pinkish-purple. Spreads by rhizome. Self seeds readily. Bitter milky sap protects plant from insects (except monarch caterpillars).

Sap has some medicinal qualities but is also poisonous to humans and animals.

Starts from seed (plant directly in fall), cuttings.

T SSN H W sun soil H2O fire N2 pH summer fall flower (seed)
P CW-W 2.0 0.3 S F-M-C D-M ••• - 5.1-7.5 green-grey grey-yellow cream-pink

habitat

Roadsides, fields, pond edges.

uses

Primary food source for monarch caterpillars. Nectar is popular with ants, too. Red Milkweed Beetle larvae bore in stems or roots; adults eat the foliage and flowers.

Fibres used to make cord.

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common > name = have on site
T = type: A = annual | B = biennial | P = perennial | SS = subshrub | D = deciduous | C = coniferous
██ = cold stratify | ██ = cold stratify & scarify | ██ = plant directly | ██ = scarify | ██ = not from seed
SSN = season: C = cool | W = warm | Y = late
H = height (in metres) | W = width (in metres) | B = bunch | S = sod | SB = sod/bunch
sun: S = full sun | S/PS = sun or partial shade | PS = partial shade | SH = full shade
soil: F = fine | M = medium | C = coarse
H2O = moisture requirement: D = dry | M = moist | W = wet | Z = aquatic
fire = fire tolerance: - = unknown | X = none | = some | •• = moderate | ••• = high tolerance
N2 = nitrogen fixing: = yes
summer = foliage colour | fall = foliage (stem) colour | flower (seed) = flower (seed / fruit) colour, if conspicuous
pH = acidity - alkalinity