Great Valley Phacelia
Phacelia ciliata
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Annual
Height
16 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
5, 6, 7, 8, 9
Water
Low
Humidity
Low to Average
Lifespan
Annual
Native To
California, USA and Baja California, Mexico
Toxicity
Can cause contact dermatitis (skin irritation) in sensitive individuals.
The Story
Plant Bio
An annual wildflower native to California, characterized by coiled, scorpion-tail-like flower clusters (cymes) that unfurl as the bell-shaped, blue-lavender flowers open. Stems and leaves are typically hairy or bristly. This species is particularly valued as a nectar source for pollinators and is often used in wildflower gardens.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
We couldn't find this plant listed online right now.
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck seeds just below soil surface in early spring.
- Keep soil consistently moist during germination, about 2 weeks.
- Transplant seedlings when they are strong enough, after 4–6 weeks.
- Water regularly, especially during dry spells, to promote healthy growth.
- Thin out crowded plants to ensure good air circulation.
- Mulch around plants to retain moisture and suppress weeds.
Pro Tip
Sow seeds in well-drained soil with full sun for best blooms.
Keep It Thriving
Care Guide
Do
- Water regularly without overwatering 🌱
- Provide full sun exposure for optimal growth
- Mulch to conserve moisture and keep roots cool
- Fertilize lightly in early spring for vigorous flowering
Don't
- Avoid waterlogging soil ❌
- Don’t disturb roots during flowering
- Refrain from over-fertilizing, which can reduce blooms
- Do not prune late in the season
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
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
Great Valley Phacelia questions
What zones can Great Valley Phacelia grow in?
Great Valley Phacelia is hardy in USDA Zones 5–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Great Valley Phacelia deer resistant?
Yes — Great Valley Phacelia is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Great Valley Phacelia bloom?
Great Valley Phacelia typically blooms in spring through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Great Valley Phacelia need full sun?
Great Valley Phacelia does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Great Valley Phacelia drought tolerant?
Yes — once established (usually after the first full season), Great Valley Phacelia handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Phacelia to compare
Keep exploring
Explore the genus
Collections featuring this plant
Grow Great Valley Phacelia 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.
