Approximately 150 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
B and T World Seeds' reference number:
USDA average, annual, minimum temperature Zone:3
Type of plant - perennial
Flower: ORANGE to VERMILION, waxy in umbels, all season, beaut. cutflower
Fruit: pod to 15cm. long (stratify 30 days, germ. 1-3 weeks)
Foliage: narr.-lance. to 11cm. long
Height in meters: 1
Parts of Asclepias tuberosa are considered toxic.
Common names for Asclepias tuberosa:
is included in the following B and T World Seeds flowering plant categories:
6: Bulbous and Rhizomatous Plant Seed List
9: Alpine and Rock Garden Seed List (Hardy and Tender)
19: Everlasting and Dried Flower Seeds Australian and Other
36: Herb Seed List Culinary Medicinal Dye and Aromatic
43: Herbaceous Border Plant Seed List
44: Cut flowers Commercial and other Recommended Varieties
45: Bee and Butterfly Attracting also Honey and Pollen Plant Seeds
57: Arid and Dry Condition Plant Seed List
83: Vegetable Seed List
85: Natives of U.S.South West (Arizona Texas New Mexico)
86: Natives of U.S.North East
87: Natives of Central U.S.A.
88: Natives of U.S.North West
89: Natives of U.S.South East
94: Natives of Rocky Mountain Area U.S.A.
131: Toxic Plants
169: Sandy Soil Plant Seed List
698: First Year Flowering Perennials
719: North American Native Ethnobotanicals
952: Wholesale Selection
Asclepias tuberosa seeds will usually germinate in 30-90 days, even under good conditions germination may be erratic. Sow seeds about 2mm deep in a Peaty seed sowing mix at about 10-25°C.
Stratification (cold treatment or vernalization) Some seeds need to be overwintered before they will germinate. Some seeds need just a couple of weeks, others 3 months. Seeds can be stratified in dampened peat or sand, in a plastic box or bag at 4°C or 5°C in a refrigerator. The seeds should not be frozen or in a wet medium. Very small seeds can be sown on the surface of their growing medium, in pots sealed in plastic bags, and kept in the 'fridge. Many vernalized seeds need light to germinate when they are sown in the "Spring".
(Pre-chil for 3-4 weeks).