perennial

Purple Hollyhock

Alcea rosea 'Halo Purple'

The Story

Plant Bio

Tall, biennial flowering plant known for its striking, large flowers.

Unique purple blooms that stand out in the garden.

Uses & Benefits:

Ornamental UsesAdds vibrant color and height to borders and flower beds, attracting pollinators.
Practical UsesProvides cut flowers for bouquets, with long-lasting blooms.
Ecological BenefitsSupports bees and butterflies, enhancing garden biodiversity.
SpeciesAlcea roseaHollyhock

Essentials

At a Glance

Plant Type

Perennial

Height

48 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

Asia

Toxicity

Non-toxic to humans and pets

Bloom period

Mid-summer – Late summer

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In flower about 2 months of the year

Planting

How to Grow

  1. Tuck seeds 1/4 inch deep into moist soil in early spring.
  2. Water regularly to keep soil evenly moist during germination.
  3. Transplant seedlings when they have 2-3 true leaves, after last frost.
  4. Space plants 18-24 inches apart for good air circulation.
  5. Mulch around plants to retain moisture and suppress weeds.
  6. Fertilize monthly with a balanced fertilizer during the growing season.

Pro Tip

Use a layer of compost to boost soil fertility and plant vigor.

Keep It Thriving

Care Guide

Do

  • Water consistently, especially during dry spells 💧
  • Prune after flowering to promote bushy growth
  • Apply organic mulch to conserve moisture and regulate soil temperature
  • Deadhead spent blooms to encourage continuous flowering

Don't

  • Avoid overwatering which can lead to root rot ❌
  • Don’t prune in late fall or winter
  • Refrain from fertilizing with high nitrogen in late season
  • Don’t ignore pest signs—early intervention helps

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Pest Check
Prune
Spring Cleanup
Stake

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Colorful perennial borderVivid garden backdropFlowering shrub focal point

Companion Plants

Multiply

Propagation Methods

Good to Know

Common Questions

Purple Hollyhock questions

What zones can Purple Hollyhock grow in?

Purple Hollyhock is hardy in USDA Zones 5–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Purple Hollyhock deer resistant?

Not reliably. Deer may browse Purple Hollyhock, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Purple Hollyhock bloom?

Purple Hollyhock typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Purple Hollyhock need full sun?

Purple Hollyhock does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Keep exploring

Grow Purple Hollyhock with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.