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Dracocephalum ruyschiana |
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| Common name |
dragonhead |
| Family |
lamiaceae |
| Life cycle |
perennial (Z5-8) |
| Flowers |
blue (spring-summer) |
| Size |
12" |
| Light |
full sun-part shade |
| Cultural notes |
well-drained garden soil |
From seed  |
germinates at room temperature; exposure to light increases germination
detailed seed-starting info below
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| Seed ripens | early August |
Refined little plant with hooded blue flowers.
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In our garden, this plant grows in the following area: rock garden About my plant portraits
PlantLinks to other web pages about Dracocephalum ruyschiana
Some particularly helpful links to other websites
- Seed from HPS/MAG '01/'02 exchange. Baggy 70F (11%G, 10-20d)
- Same seed as above. Baggy 70F (10%G, 9d). Exposure to light afterwards did not increase germination
- Seed from '03 garden. Baggy 70F (40%G, 7-19d); to light exposure after 30d (+12%G, 3-9d)
- Seed from '04 garden. Baggy 70F with light (20%G, 21-30d) - 70F no light (+25%G, 9-14d)
- Seed from '06 garden. Baggy 70F (11d; 7%G, 5-11d) - 70F with light (30d; 3%G, 3d)
- Seed from '07 garden. Baggy 70F (67%G, 5-31d)
- Seed from HPS/MAG '09/'10 exchange. Baggy 70F (9d; 7%G, 5d) - 70F with light (18d; 14%G, 6d)
Light sensitivity still not clear. Always more difficult to germinate than the annual D. moldavicum.
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common mis-spellings: ruyschianum
Last modified:
March 12, 2010
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