Approximately 0 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
Fruit: capsule 9-12mm
Foliage: lance.-ovate to 8cm. long
Height in meters: 0.3
Common names for Penstemon eriantherus v eriantherus:
Penstemon eriantherus v eriantherus
is included in the following B and T World Seeds flowering plant categories:
1: Species in Stock at B and T
9: Alpine and Rock Garden Seed List (Hardy and Tender)
43: Herbaceous Border Plant Seed List
87: Natives of Central U.S.A.
88: Natives of U.S.North West
94: Natives of Rocky Mountain Area U.S.A.
97: Canadian Natives Western and British Colombia
185: Plant Species whose germination is improved by Smoke
700: Humming Bird Nectar Plants
Penstemon eriantherus v eriantherus seeds will usually germinate in 18-21 days. Normally will only germinate with light so surface sow. Sow seeds about 1mm deep in a Well drained seed sowing mix at about 15°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".