We have recently published ‘Food Forest Plants for Hotter Conditions’: i.e. tropical and sub-tropical regions. We rely on regular donations to keep our free database going and help fund development of this and another book we are planning on food forest plants for Mediterranean climates. Please give what you can to keep PFAF properly funded. More >>>

Follow Us:

 

Asclepias subulata - Decne.

Common Name Rush Milkweed
Family Asclepiadaceae
USDA hardiness 5-9
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]. One report says that the plant is considered poisonous by some native North American Indian tribes[257].
Habitats Desert washes and sandy places below 600 metres in California[71].
Range South-western N. America.
Edibility Rating    (0 of 5)
Other Uses    (3 of 5)
Weed Potential No
Medicinal Rating    (1 of 5)
Care (info)
Fully Hardy Well drained soil Moist Soil Semi-shade Full sun
Asclepias subulata Rush Milkweed


http://commons.wikimedia.org/wiki/User:Stan_Shebs
Asclepias subulata Rush Milkweed
http://commons.wikimedia.org/wiki/User:Stan_Shebs

 

Translate this page:

Summary


Physical Characteristics

 icon of manicon of flower
Asclepias subulata is a PERENNIAL growing to 2 m (6ft 7in).
See above for USDA hardiness. It is hardy to UK zone 6. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, insects, Lepidoptera (Moths & Butterflies).
Suitable for: light (sandy) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

Plant Habitats

 Cultivated Beds;

Edible Uses

None known

References   More on Edible Uses

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.
Emetic  Ophthalmic  Purgative  Stomachic

The plant is emetic, ophthalmic, purgative and stomachic[61, 257]. The reports do not specify which part of the plant is used.

References   More on Medicinal Uses

The Bookshop: Edible Plant Books

Our Latest books on Perennial Plants For Food Forests and Permaculture Gardens in paperback or digital formats.

Food Forest Plants for Hotter Conditions: 250+ Plants For Tropical Food Forests & Permaculture Gardens.
Edible Tropical Plants

Food Forest Plants for Hotter Conditions: 250+ Plants For Tropical Food Forests & Permaculture Gardens.

More
Plants for Your Food Forest: 500 Plants for Temperate Food Forests & Permaculture Gardens.
Edible Temperate Plants

Plants for Your Food Forest: 500 Plants for Temperate Food Forests & Permaculture Gardens.

More
PFAF have eight books available in paperback and digital media.
More Books

PFAF have eight books available in paperback and digital formats. Browse the shop for more information.

Shop Now

Other Uses

Latex

Rubber can be made from latex contained in the leaves and the stems[61, 112, 171]. The dogbane-milkweed family Asclepias, Apocynum, Calotropis, and Trachomitum spp) has been used for fiber industrial crops for millennia with a number in cultivation as regional crops. All of these crops are dual-purpose fibres, offering bast fibres from the stem and seed finer or ‘floss’ in the fruit pods. Many have also been identified as potential hydrocarbon crops due to high latex content. Could be integrated into various agroforestry systems rather than as monocultures [1-1].

Special Uses

Carbon Farming

References   More on Other Uses

Cultivation details

Experimental Crop  Industrial Crop: Hydrocarbon  Management: Hay

Prefers a well-drained light rich or peaty soil in a sunny position[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]. A xerophytic plant, it looks like a species of Ephedra[200]. 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].

Carbon Farming

  • Experimental Crop  Plant breeders are testing these plants to see if they could be domesticated for cultivation, but they are still in an experimental phase. Examples include milkweed and leafy spurge.
  • Industrial Crop: Hydrocarbon  Materials, chemicals and energy include bioplastics, rubber, biomass products gasoline, jet fuel, diesel, butane, propane, biogas. Plants are usually resprouting plants and saps.
  • Management: Hay  Cut to the ground and harvested annually. Non-destructive management systems maintaining the soil organic carbon.

References   Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

Type a value in the Celsius field to convert the value to Fahrenheit:

Fahrenheit:

image

The PFAF Bookshop

Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees,Edible Shrubs, Woodland Gardening, and Temperate Food Forest Plants. Our new book is Food Forest Plants For Hotter Conditions (Tropical and Sub-Tropical).

Shop Now

Plant 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

Native Range

NORTHERN AMERICA: United States (Arizona, California, Nevada), Mexico (Baja, Sonora)

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 NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Asclepias asperulaAntelope Horns, Spider milkweed, Trailing MilkweedPerennial1.0 7-9 MLMSNDM213
Asclepias brachystephanaBract milkweedPerennial0.3 0-0  LSNDM002
Asclepias californicaCalifornia Milkweed, Greene's milkweedPerennial0.5 0-0  LSNDM212
Asclepias currasavicaBlood FlowerPerennial2.0 10-12 FLMHNM012
Asclepias decumbens Perennial0.9 -  LSNDM202
Asclepias eriocarpaWoollypod MilkweedPerennial0.9 7-10  LSNDM223
Asclepias erosaDesert MilkweedPerennial0.8 0-0  LNDM203
Asclepias galioidesBedstraw MilkweedPerennial0.4 -  LSNDM212
Asclepias halliiPurple Silkweed, Hall's milkweedPerennial1.0 3-7  LMSNDM313
Asclepias incarnataSwamp Milkweed, Swamp Butterfly Weed, Marsh MilkweedPerennial1.2 3-8 MLMSNDMWe323
Asclepias involucrataDwarf MilkweedPerennial0.0 -  LSNDM212
Asclepias lanceolataPurple Silkweed, Fewflower milkweedPerennial1.2 4-8  LMSNDM213
Asclepias latifoliaBroadleaf MilkweedPerennial0.8 -  LSNDM012
Asclepias mexicana Perennial0.8 5-9  LSNDM102
Asclepias ovalifoliaOval-leaf milkweedPerennial0.6 5-9  LMSNDM203
Asclepias pumilaLow Milkweed, Plains milkweedPerennial0.4 5-9  LMSNDM213
Asclepias purpurascensPurple MilkweedPerennial0.8 -  LMSNDM213
Asclepias quadrifoliaFourleaf MilkweedPerennial0.5 4-8  LMSNDM223
Asclepias rubraRed SilkweedPerennial1.2 4-8  LMSNDM313
Asclepias speciosaShowy MilkweedPerennial0.8 3-9  LMSNDM323
Asclepias sullivantiiPrairie milkweedPerennial1.2 0-0  LSNDM003
Asclepias syriacaCommon Milkweed, Silkweed, MilkweedPerennial1.0 3-8 MLMSNDM323
Asclepias tuberosaPleurisy Root, Butterfly milkweed, Rolfs' milkweed, Indian PaintbrushPerennial0.8 3-9 MLMSNDM334
Asclepias viridifloraGreen Milkweed, Green comet milkweedPerennial1.0 0-0  LMSNDM323

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

 

Expert comment

Author

Decne.

Botanical References

71200

Links / References

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

Readers comment

Add a comment

If you have important information about this plant that may help other users please add a comment or link below. Only comments or links that are felt to be directly relevant to a plant will be included. If you think a comment/link or information contained on this page is inaccurate or misleading we would welcome your feedback at [email protected]. If you have questions about a plant please use the Forum on this website as we do not have the resources to answer questions ourselves.

* Please note: the comments by website users are not necessarily those held by PFAF and may give misleading or inaccurate information.

To leave a comment please Register or login here All comments need to be approved so will not appear immediately.

Subject : Asclepias subulata  
© 2010, Plants For A Future. Plants For A Future is a charitable company limited by guarantee, registered in England and Wales. Charity No. 1057719, Company No. 3204567.