How to grow Black Hollyhock
Alcea rosea nigra
Seed Saving Black Hollyhock
Seed viability is five years.
How long does Black Hollyhock take to grow?
These estimates for how long Black Hollyhock takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
- Days to Germination How long does it take Black Hollyhock to germinate?
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56 days
Average 56 days
| Min 3 days
| Max 361 days (9)
- Days to Transplant How long until I can plant out Black Hollyhock?
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+ 46 days
Average 46 days
| Min 20 days
| Max 80 days (7)
- Days to Maturity How long until Black Hollyhock is ready for harvest / bloom?
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+ days
Average days
| Min days
| Max days (0)
- Total Growing Days How long does it take to grow Black Hollyhock?
- = days
Our when to plant Black Hollyhock estimates are relative to your last frost date.
- When to sow The number of days to sow Black Hollyhock before or after your last frost date.
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14 days after Last Frost Date
Footnotes