The Story
Plant Bio
Oenothera fruticosa, sundrops, is a clumping perennial native to eastern North America, reaching about sixteen to eighteen inches. Cup-shaped golden-yellow flowers two inches across open in succession from late spring through summer above narrow green leaves that often flush red in autumn and stay semi-evergreen through mild winters.
Unlike the evening primroses it is related to, sundrops open in daylight and stay open, which is what makes them useful in a border. The plant spreads by underground runners into a widening patch — welcome in a meadow, worth edging in a small bed — and its seed capsules are shaped like tiny clubs.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
17 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Low
Humidity
Low
Lifespan
Perennial
Native To
Eastern North America
Toxicity
Non-toxic
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Plant in spring in well-drained, average to poor soil.
- Choose full sun to partial shade.
- Space about eighteen inches apart.
- Water to establish, then sparingly.
- Deadhead to extend flowering.
- Divide every few years to control spread.
Pro Tip
Keep it lean — in rich, watered soil it spreads much faster and flops, where in poor dry ground it stays tight and flowers harder.
Keep It Thriving
Care Guide
Do
- Plant in full sun and lean soil ☀️
- Deadhead to keep flowers coming ✂️
- Divide every few years 🌱
- Use it on dry banks and slopes 🌿
Don't
- Feed or overwater it ❌
- Plant it in a tightly composed border ❌
- Expect it to stay in one place ❌
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| 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
Sundrops questions
What zones can Sundrops grow in?
Sundrops is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Sundrops deer resistant?
Yes — Sundrops is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Sundrops bloom?
Sundrops typically blooms in late spring to summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Sundrops need full sun?
Sundrops does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Sundrops drought tolerant?
Yes — once established (usually after the first full season), Sundrops handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Oenothera to compare
Pink Evening Primrose
Oenothera speciosa
Missouri Evening Primrose Giant Evening Primrose
Oenothera macrocarpa
Evening Primrose
Oenothera biennis
Native Yellow Sundrops
Oenothera fruticosa 'Native Yellow Bellflower'
Ozark Sundrop
Oenothera missouriensis 'Ozark Sundrop'
Siskiyou Evening Primrose
Oenothera speciosa 'Siskiyou'
Keep exploring
Explore the genus
Grow 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.