How to Grow Hollyhock

Ready to grow Hollyhock?

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🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🌍 Flower Garden Soil ✂️ Pruning Shears 🧤 Garden Gloves 🚿 Watering Can

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Find Your Hollyhock Planting Dates

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🌿 Plant Overview

Scientific Name Alcea rosea

Category flower

Days to Maturity 365 days

Starting Method Start Indoors

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

18" apart

🌱

Depth

0.25" deep

📏

Height

48-96"

🌱

Germination

10-14 days

Ready to Grow Hollyhock?

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Hollyhock Planting Calendar by Zone

Hollyhock Planting Calendar by State

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Frequently Asked Questions

When should I plant Hollyhock? +

Start Hollyhock seeds indoors 6 weeks before your last frost date, then transplant outdoors 2 weeks after the last frost. Use the search on this page to find exact dates for your ZIP code or city.

How long does Hollyhock take to grow? +

Hollyhock typically matures in about 365 days from planting. Exact timing varies by variety, soil conditions, and local climate.

Should I start Hollyhock indoors or direct sow? +

Hollyhock should be started indoors 6 weeks before the last frost date. This gives seedlings time to establish before being transplanted outside after frost danger has passed.

How much sun does Hollyhock need? +

Hollyhock requires full sun (6-8 hours) to thrive.

How far apart should I plant Hollyhock? +

Space Hollyhock plants 18 inches apart to allow adequate airflow and root development.

How much water does Hollyhock need? +

Hollyhock has moderate (1 inch/week) water needs. Consistent moisture is important especially during germination and early growth.

About Hollyhock

Stately cottage garden biennial with tall spikes of bowl-shaped blooms. Self-seeds freely. Edible flowers used as a garnish. Hummingbird and butterfly magnet.

Expect your Hollyhock to be ready for harvest in approximately 365 days from planting.

Use the search above or browse by zone or state to find the perfect planting dates for your location.