The Story
Plant Bio
Hemizonia corymbosa is a sturdy annual or short-lived perennial known for its bright yellow flowers and drought-resistant nature. It thrives in dry, sandy soils and can be found in coastal habitats.
This species is noted for its ability to attract a variety of pollinators, particularly in arid environments.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Annual
Height
16 inches
Width
12 inches
Light
Full Sun
Zones
8, 9, 10
Water
Low
Humidity
Low
Lifespan
Annual
Native To
California
Toxicity
Non-toxic
Planting
How to Grow
- Tuck seeds into well-draining soil in early spring.
- Water regularly to keep soil slightly moist but not waterlogged.
- Mist cuttings if propagating via softwood cuttings during summer.
- Thin seedlings to prevent overcrowding for optimal growth.
- Apply a balanced fertilizer every 6 weeks during active growth.
- Prune lightly after flowering to encourage bushy growth.
Pro Tip
Use well-draining sandy soil and full sun exposure for best results.
Keep It Thriving
Care Guide
Do
- Water deeply during dry spells 🌱
- Prune after flowering to promote new growth
- Fertilize with a balanced fertilizer every 6 weeks
Don't
- Avoid overwatering to prevent root rot ❌
- Do not fertilize in late fall
- Avoid heavy shade which reduces flowering
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Plant |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Multiply
Propagation Methods
Good to Know
Common Questions
Coast Tarweed questions
What zones can Coast Tarweed grow in?
Coast Tarweed is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Coast Tarweed deer resistant?
Yes — Coast Tarweed is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Coast Tarweed bloom?
Coast Tarweed typically blooms in summer to fall through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Coast Tarweed need full sun?
Coast Tarweed does best in full sun (6+ hours).
Is Coast Tarweed drought tolerant?
Yes — once established (usually after the first full season), Coast Tarweed handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
Keep exploring
Explore the genus
Hardy in your zone?
Grow Coast Tarweed 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.