Texas Sundrops
Calylophus drummondii
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
12 inches
Width
18 inches
Light
Full Sun
Zones
4, 5, 6, 7, 8, 9
Water
Low
Humidity
Low to average
Lifespan
Perennial
Native To
Southern North America
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
Calylophus drummondii, commonly known as Drummond's Sundrops, is a low-growing perennial with slender, grey-green foliage and bright yellow, cup-shaped flowers that bloom profusely during the summer months. This species is particularly drought-tolerant and attracts pollinators such as bees and butterflies, making it an excellent choice for xeriscaping and wildlife gardens.
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into well-draining soil in early spring.
- Water lightly until established, about 2 weeks.
- Place in full sun for best flowering.
- Fertilize with a balanced fertilizer monthly during growth.
- Deadhead spent flowers to encourage more blooms.
- Divide every 3-4 years in early spring for rejuvenation.
Pro Tip
Ensure soil drains well to prevent root rot and promote healthy growth.
Keep It Thriving
Care Guide
Do
- Water during dry spells 🌱
- Deadhead regularly to prolong blooming
- Apply mulch to retain moisture
Don't
- Overwater to avoid root rot ❌
- Allow soil to stay waterlogged ❌
- Use heavy fertilizers that can burn roots ❌
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Prune |
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
Texas Sundrops questions
What zones can Texas Sundrops grow in?
Texas Sundrops is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Texas Sundrops deer resistant?
Yes — Texas Sundrops is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Texas Sundrops bloom?
Texas Sundrops typically blooms in late spring 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 Texas Sundrops need full sun?
Texas Sundrops does best in full sun (6+ hours).
Is Texas Sundrops drought tolerant?
Yes — once established (usually after the first full season), Texas Sundrops handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
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Grow Texas Sundrops 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.
