Henderson's Checkermallow
Sidalcea hendersonii
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
5, 6, 7, 8
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Northwestern United States
Toxicity
Non-toxic
The Story
Plant Bio
Sidalcea hendersonii, commonly known as Henderson's checkermallow, is a perennial plant native to the West Coast of the United States. It features tall, slender stems topped with clusters of vibrant pink flowers. This species is particularly notable for its ability to thrive in wetland habitats and attract various pollinators.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into well-draining soil in early spring for best germination.
- Mist cuttings regularly to maintain humidity and promote rooting.
- Water consistently during dry periods to encourage healthy growth.
- Thin seedlings to prevent overcrowding and ensure airflow.
- Apply a balanced fertilizer in early spring to support blooming.
- Divide mature plants every 3-4 years in early spring for rejuvenation.
Pro Tip
Use organic compost to enrich soil and boost plant vigor for vibrant blooms.
Keep It Thriving
Care Guide
Do
- Water deeply during dry spells 🌱
- Deadhead spent flowers to promote more blooms
- Mulch around plants to retain moisture and suppress weeds
Don't
- Avoid overwatering, which can cause root rot ❌
- Don’t disturb roots during flowering period
- Refrain from fertilizing late in the season to prevent weak growth
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Spring Cleanup | ||||||||||||
| Stake |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Henderson's Checkermallow questions
What zones can Henderson's Checkermallow grow in?
Henderson's Checkermallow 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 Henderson's Checkermallow deer resistant?
Yes — Henderson's Checkermallow is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Henderson's Checkermallow bloom?
Henderson's Checkermallow 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 Henderson's Checkermallow need full sun?
Henderson's Checkermallow does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Henderson's Checkermallow drought tolerant?
Yes — once established (usually after the first full season), Henderson's Checkermallow handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
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See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
