How to Plant Alcea (Hollyhocks): A Complete Growing Guide

Alcea, commonly known as Hollyhocks, are classic cottage-garden favourites, loved for their tall flower spikes and old-fashioned charm. With proper planting and care, these stunning blooms can thrive for years and even self-seed. Follow this step-by-step guide from Coast Farms to successfully plant and grow healthy hollyhocks in your garden.

When to Plant Alcea (Hollyhocks)

Alcea bare roots can be planted in spring or fall, ideally within one week of receiving them.

• Spring planting (February–May): Allows plants to establish as soil warms, encouraging strong early growth.
• Fall planting (September–December): Gives roots time to settle before winter dormancy, often leading to stronger plants the following year.

Both seasons work well, making hollyhocks a flexible and rewarding addition to your garden.

Where to Plant Hollyhocks

For best results, choose the right location:

• Sunlight: Full sun is essential — at least 6 hours of direct sunlight daily for tall stems and abundant blooms.
• Soil: Hollyhocks prefer free-draining soil. Sandy, gravelly, or gritty soils are ideal and help prevent root rot.
• Placement: Due to their height, Alcea plants are perfect for:
• The back of flower borders
• Against walls, fences, or sheds
• Wind protection: Some shelter from strong winds helps prevent stems from bending or breaking.
  

At Coast Farms, we recommend planning placement carefully, as mature hollyhocks can reach impressive heights and become a striking vertical feature in the garden.

How to Plant Alcea Bare Roots

1. Soak the roots in water for 3–6 hours before planting to rehydrate them.
2. Prepare the soil by loosening it and ensuring good drainage.
3. Plant depth: Place the entire root system below soil level, with any shoots just above the surface.
4. Spacing: Space plants 30–60 cm (12–24 inches) apart to allow airflow and reduce disease risk.
5. Water thoroughly after planting and keep soil consistently moist as new growth begins.

Growing & Caring for Hollyhocks

• Growth cycle: Leaves emerge in spring, followed by tall flower spikes in summer.
• Blooming: Hollyhocks are typically biennial or short-lived perennials, often flowering in their second year.
• Self-seeding: Allow spent flowers to go to seed if you want natural reseeding.
• After flowering: Cut stems back to ground level, or leave seed heads to mature.
• Watering: Water during dry spells, especially in the first year.
• Maintenance: Keep the area weed-free and stake tall plants if needed.
• Dividing: Over time, clumps may be divided or re-spaced in early spring or autumn.

With minimal care, hollyhocks become larger and more impressive each season.

Why Choose Alcea from Coast Farms?

At Coast Farms, we specialize in high-quality flowering plants selected for Canadian gardens. Our Alcea bare roots are carefully packed and shipped to ensure healthy establishment and long-term success. Whether you’re building a cottage garden, pollinator border, or classic floral backdrop, hollyhocks are a timeless choice.