When to Plant Hollyhock in Zone 2B
USDA Zone
2B
Cities Covered
17
Avg Last Frost
Thursday, May 28, 2026
Plant Type
Indoor Start
📅 Planting Calendar for Zone 2B
Start Seeds Indoors Thursday, April 16, 2026
Transplant Outdoors Thursday, June 11, 2026
Pro Tip: Start Hollyhock seeds indoors 6 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Alcea rosea
Days to Maturity 365 days
Sun Requirements Full Sun (6-8 hours)
Plant Spacing 18" apart
Cities in Zone 2B
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Growing Hollyhock in USDA Zone 2B
Hollyhock (Alcea rosea) grows well in USDA Hardiness Zone 2B. This zone includes cities like Gakona, Glennallen, Mc Grath and 14 more.
The average last frost date for Zone 2B is around Thursday, May 28, 2026. For best results, start your Hollyhock seeds indoors around Thursday, April 16, 2026, then transplant outdoors around Thursday, June 11, 2026.
Expect to harvest your Hollyhock approximately 365 days after planting.