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When to Plant Hollyhock in Zone 13A

USDA Zone

13A

Cities Covered

2

Avg Last Frost

Thursday, January 1, 2026

Plant Type

Indoor Start

📅 Planting Calendar for Zone 13A

Start Seeds Indoors Thursday, November 20, 2025
Transplant Outdoors Thursday, January 15, 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 13A

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Growing Hollyhock in USDA Zone 13A

Hollyhock (Alcea rosea) grows well in USDA Hardiness Zone 13A. This zone includes cities like Keauhou, M C B H Kaneohe Bay.

The average last frost date for Zone 13A is around Thursday, January 1, 2026. For best results, start your Hollyhock seeds indoors around Thursday, November 20, 2025, then transplant outdoors around Thursday, January 15, 2026.

Expect to harvest your Hollyhock approximately 365 days after planting.