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Asclepias californica - Greene.

Common Name California Milkweed, Greene's milkweed
Family Asclepiadaceae
USDA hardiness Coming soon
Known Hazards Although no specific reports have been seen for this species, many, if not all, members of this genus contain toxic resinoids, alkaloids and cardiac glycosides[274]. They are usually avoided by grazing animals[274].
Habitats Dry slopes below 2200 metres in California[71].
Range South-western N. America.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Well drained soil Moist Soil Semi-shade Full sun
Asclepias californica California Milkweed, Greene


http://commons.wikimedia.org/wiki/User:Sarefo
Asclepias californica California Milkweed, Greene
http://commons.wikimedia.org/wiki/User:Sarefo

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Summary


Physical Characteristics

 icon of manicon of flower
Asclepias californica is a PERENNIAL growing to 0.5 m (1ft 8in). The species is hermaphrodite (has both male and female organs) and are pollinated by Bees, insects, lepidoptera. Suitable for: light (sandy) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil.

Synonyms

Habitats

 Cultivated Beds;

Edible Uses

Edible Parts: Leaves.
Edible Uses: Gum.

The milky sap of the plant can be boiled until thick and then chewed like chewing gum[257]. The leaves can be roasted and then chewed[257].

Medicinal Uses



Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Stings.

The dried and powdered plant can be applied to spider bites[257].

Other Uses

Gum;  Latex.

Rubber can be made from latex contained in the stems and leaves[112].

Cultivation details

We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it could succeed outdoors at least in the milder parts of this country. The following notes are based on the general needs of the genus. Prefers a well-drained light rich or peaty soil[1, 200]. Succeeds in poor soils. Many members of this genus seem to be particularly prone to damage by slugs. The young growth in spring is especially vulnerable, but older growth is also attacked and even well-established plants have been destroyed in wet years[K]. Plants resent root disturbance and are best planted into their final positions whilst small[134]. The flower of many members of this genus can trap insects between its anther cells, the struggles of the insect in escaping ensure the pollination of the plant[207].

Propagation

Seed - best sown in a greenhouse as soon as it is ripe in the autumn or in late winter[134, 169]. We have also had good results from sowing the seed in the greenhouse in early spring[K], though stored seed might need 2 - 3 weeks cold stratification[134]. Germination usually takes place in 1 - 3 months at 18°c[134]. As soon as the seedlings are large enough to handle, prick them out into individual pots and grow them on in the greenhouse for their first winter. Plant out when they are in active growth in late spring or early summer and give them some protection from slugs until they are growing away strongly. Division in spring. With great care since the plant resents root disturbance. Pot the divisions up and place them in a lightly shaded position in the greenhouse until they are growing away strongly, then plant them out in the summer, giving them some protection from slugs until they are established.. Basal cuttings in late spring. Use shoots about 10cm long with as much of their white underground stem as possible. Pot them up individually and place them in a lightly shaded position in a greenhouse until they are rooting and growing actively. If the plants grow sufficiently, they can be put into their permanent positions in the summer, otherwise keep them in the greenhouse until the following spring and when they are in active growth plant them out into their permanent positions. Give them some protection from slugs until they are established.

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Asclepias asperulaAntelope Horns, Spider milkweed, Trailing Milkweed21
Asclepias brachystephanaBract milkweed00
Asclepias decumbens 20
Asclepias eriocarpaWoollypod Milkweed22
Asclepias erosaDesert Milkweed20
Asclepias galioidesBedstraw Milkweed21
Asclepias halliiPurple Silkweed, Hall's milkweed31
Asclepias incarnataSwamp Milkweed, Swamp Butterfly Weed, Marsh Milkweed32
Asclepias involucrataDwarf Milkweed21
Asclepias lanceolataPurple Silkweed, Fewflower milkweed21
Asclepias latifoliaBroadleaf Milkweed01
Asclepias mexicana 10
Asclepias ovalifoliaOval-leaf milkweed20
Asclepias pumilaLow Milkweed, Plains milkweed21
Asclepias purpurascensPurple Milkweed21
Asclepias quadrifoliaFourleaf Milkweed22
Asclepias rubraRed Silkweed31
Asclepias speciosaShowy Milkweed32
Asclepias subulataRush Milkweed01
Asclepias sullivantiiPrairie milkweed00
Asclepias syriacaCommon Milkweed, Silkweed, Milkweed32
Asclepias tuberosaPleurisy Root, Butterfly milkweed, Rolfs' milkweed, Indian Paintbrush33
Asclepias viridifloraGreen Milkweed, Green comet milkweed32

 

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Expert comment

Author

Greene.

Botanical References

71

Links / References

For a list of references used on this page please go here

Readers comment

Danny   Wed Feb 4 2009

I am looking for seeds of this Milkweed.

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