Pacific Poison-oak Toxicodendron diversilobum

Detailed Listing For
Botanical Name:

Toxicodendron diversilobum







Common Name:

Pacific Poison-oak

Seeds Per Pound:
0.12 lb
Average Viable Seeds/Packet:
Germination Test Type:
6-8 feet
Collection Locale:
Crop Year:
Minimum Hardiness Zone:
In Stock: 0.12 lb
  • Toxicodendron diversilobum

Items are priced on a curve, you can buy any 'bulk quantity' up to what we have in stock, some examples are:
1 packet (~ 12 seeds)
2 gram (~ 52 seeds)
5 gram (~ 131 seeds)
10 gram (~ 261 seeds)
1 oz (~ 741 seeds)
Growing Info, follow in order:
Scarification: Soak in hot tap water, let stand in water for 24 hours, repeat process on seed that did not imbibe.
Stratification: none required.
Germination: sow 1/8" deep, mulch the seed bed, keep moist.
In a Nutshell:
* Toxicodendron diversilobum (syn. Rhus diversiloba), commonly named Pacific poison oak or western poison oak, is a woody vine or shrub in the Anacardiaceae (sumac) family. It is widely distributed in western North America, inhabiting conifer and mixed broadleaf forests, woodlands, grasslands, and chaparral biomes. more...
* Western poison oak was employed medicinally by some native North American Indian tribes who used it to treat various complaints. In view of the potential toxicity of the plant, extreme caution is advised in any use of it.
* The leaves are rich in tannin. They can be collected as they fall in the autumn and used as a brown dye or as a mordant.
* An oil is extracted from the seeds. It attains a tallow-like consistency on standing and is used to make candles. These burn brilliantly, though they emit a pungent smoke.
* Seed - best sown in a cold frame as soon as it is ripe. Pre-soak the seed for 24 hours in hot water (starting at a temperature of 80 - 90c and allowing it to cool) prior to sowing in order to leach out any germination inhibitors. The stored seed also needs hot water treatment and can be sown in early spring in a cold frame. more...
* All parts of the plant contain resinous phenolic compounds known as urushiols. Direct contacr with the plant, exposure to smoke or fumes from a burning plant or even contact with pets or animals that have touched the plant can cause severe allergic dermatitis in some individuals.
* Black-tailed deer, mule deer, California ground squirrels, western gray squirrels, and other indigenous fauna feed on the leaves of the plant. It is rich in phosphorus, calcium, and sulfur. Bird species use the berries for food, and utilize the plant structure for shelter. Neither native animals, nor horses, livestock, or canine pets demonstrate reactions to urushiol. more...
Usda description:
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