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Details
Black Prince is a stunning and hard to find double black hollyhock. Hollyhocks are great flowers to attract hummingbirds, butterflies and bees with. Plant this gorgeous old-fashioned flower in the back of your border.
Michigan Seeds and Plants grown on our farm, Renegade Acres, in Howell, MI!
Certified Organic by Oregon Tilth.
Additional Info
| Botanical Name | Alcea rosea var. nigra |
|---|---|
| Life Cycle | Biennial |
| Min. Time to Germinate | 10 Days |
| Max. Time to Germinate | 14 Days |
| Depth to Sow Seeds | Surface Sow; press seeds gently into the soil to make good contact, but do not cover with any additional soil; these seeds require light to germinate |
| When to Sow | Indoors 6-8 weeks before last spring frost |
| Growing Height | 4-6 ft. (1.2-1.8 m) |
| Plant Spacing | 24-36 in. (60-90 cm) |
| Hardiness | USDA Zone 5b: to -10F, USDA Zone 6a: to -5F, USDA Zone 6b: to 0F, USDA Zone 7a: to 5F, USDA Zone 7b: to 10F, USDA Zone 8a: to 15F, USDA Zone 8b: to 20F, USDA Zone 9a: to 25F, USDA Zone 9b: to 30F, USDA Zone 10a: to 35F |
| Sun Exposure | Full Sun |
| Danger | N/A |
| Bloom Color | Dark Purple/Black, Maroon (Purple-Brown) |
| Bloom Time | Late Summer/Early Fall, Mid-Summer |
| Foliage | Herbaceous |
| Other Details | Average Water Needs; Water regularly; do not overwater, Self-sows freely; deadhead if you do not want volunteer seedlings next season |
| Soil pH Requirements | 6.1 to 6.5 (mildly acidic), 6.6 to 7.5 (neutral), 7.6 to 7.8 (mildly alkaline) |
| Propagation Methods | From seed; direct sow after last frost, From seed; direct sow outdoors in fall, From seed; sow indoors before last frost, From seed; winter sow in vented containers, coldframe or unheated greenhouse |
| Seed Collecting | Allow pods to dry on plant; break open to collect seeds |
| Seeds Per Pack | 15 |
