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:8
Type of plant - perennial
Flower: WHITE, veined BROWN-PURPLE
Foliage: -3.5cm., BROWN-PURPLE
Height in meters: 0.07
is included in the following B and T World Seeds flowering plant categories:
9: Alpine and Rock Garden Seed List (Hardy and Tender)
23: New Zealand Natives and Introduced Species
43: Herbaceous Border Plant Seed List
Gentiana saxosa seeds will usually germinate in 14-180 days, even under good conditions germination may be erratic. Normally germinates in the dark. Sow seeds about 1mm deep in a Lime free seed sowing mix at about 22°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-chill for 2 months).