Sunflower – Black Russian
$3.99
Giant variety which can exceed three meters in height with large flowers with yellow petals from 40 to 45 cm in diameter. Fast growing. Stake as needed. When mature, it produces black seeds. Nice effect in the vegetable garden, in hedges or in beds.
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Additional information
Seeds | ~40 |
---|---|
Difficulty | |
Sowing | |
Lifecycle | |
Root cellar | |
Sowing season |
Growing tips
Conditions of germination:
- depth of sowing: 2 cm
- optimal temperatures of germination: 20 to 30 ºC
- time for germination: 7 to 21 days
When to sow:
- indoor sowing 4 to 6 weeks before the last frost date in your area OR
- direct seeding after any risk of frost
Sowing technique: in line
- Draw a line in the ground (in a pot or in the ground), then sow the seeds.
Transplant outdoors (for seedlings started indoors):
- When all risk of frost has been eliminated
Distance in the garden:
- between plants: 45 to 60 cm
- between rows: 60 cm
Height of the plants: 300 to 350 cm
Soil: well drained, fertile, rather dry
Exposure: full sun
Maturation: 65 to 75 days
Specificities:
- grows well in pots
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