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|Origin:||Western China: scree, sparse forests, slopes in the mountains.|
|Special Features:||Dracocephalum rupestre has intense blue blooms on slightly reddish stems. Robust plant. Drought resistent!|
|Historical:||used as tea in China|
|Flower Colour:||intense blue|
|Natural Flowering Period:||July - August|
|Winter Hardiness Zones:||Z4 - Z8|
|Foliage:||oval to heart-shaped basal leaves, notched|
|Height with Flowers:||30 cm|
|Spacing between Plants:||30 cm|
|Soil Requirements:||dry / average|
|Usage:||honey-bee food plant / for the rock garden|
|Grams per 1000 seeds:||2.5 Gram|
|Seeds per Gram
(does not correspond to the number of plants!):
|Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
|Sowing Rates/Trays:||4 - 6 per cell|
|Plug tray recommended size(s):||128|
(16) See 15 with the exception of germination being slower and more irregular. This poses no problems.
(15) Rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about +20°C [68°F]. Seeds must be covered thinly. Do not cover very small seeds, but tightly press into the earth. Keep in cooler conditions after germination occurs.
|Sowing to Germination:||2 - 4 weeks|
|Cutting back at Transplanting:||Cut-back once to keep more compact.|
|Container Size(s):||1 plug per 8/9 cm (3 1/2")|
|Fertilizer:||Medium (150-200 ppm)|