How to Grow Sundrops Gold
Wikimedia Commons
Sundrops Gold
Oenothera fruticosa 'Sundrops Gold'
flowerSundrops Gold is a vibrant cultivar of evening primrose known for its bright golden-yellow flowers that open in the late afternoon and evening. This compact, low-growing perennial produces clusters of cheerful blooms from late spring through summer and attracts pollinators with ease. It's an excellent choice for borders, rock gardens, and containers due to its manageable size and prolific flowering.
When should you plant Sundrops Gold in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Sundrops Gold timeline · Pittsburgh, PA (Zone 6b)
-
Plant Sundrops Gold
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
First Sundrops Gold blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Sundrops Gold dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 4-9, with reliable hardiness down to zone 3b
Sign up free to see if Sundrops Gold grows in your zone — and get a personalized planting timeline.
Get my Sundrops Gold timeline →Growth Stages
Seedling
2-3 weeksTiny seedlings with narrow cotyledons appear within 10-14 days. First true leaves are linear and emerge in rosette formation.
Keep soil consistently moist but not waterlogged. Provide bright light as soon as sprouts emerge. Do not cover with soil.
Vegetative Growth
4-6 weeksPlant develops low mounded foliage with narrow, lance-shaped leaves that may have a reddish tinge. Height increases gradually to 12-18 inches.
Reduce watering frequency as plant establishes. Begin fertilizing lightly with balanced fertilizer every 4 weeks. Pinch stems early if bushier form is desired.
Bud Formation
2-3 weeksFlower buds form along stem tips in clusters, appearing as tight green buds in the leaf axils and at branch terminals.
Maintain consistent watering to support bud development. Reduce nitrogen to encourage flowering. Ensure full sun exposure for maximum bud set.
Flowering
8-12 weeks (May/June through August/September)Bright golden-yellow flowers open in clusters of 3-5 blooms per branch. Flowers are typically 1-1.5 inches across with four petals arranged in a cross pattern. Blooms open late afternoon/evening and close by morning.
Deadhead spent flowers to encourage continuous blooming. Water moderately; reduce frequency if growth becomes too lush. Avoid high-nitrogen fertilizer.
Seed Development & Dormancy
6-8 weeksIf flowers are not deadheaded, small seed pods develop. Foliage gradually declines in fall. Plant dies back to ground in cold climates or remains semi-evergreen in warmer zones.
Leave some flowers for seed if self-sowing is desired. Cut back dead foliage in late fall or early spring. In warmer zones, light pruning maintains shape.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Spray foliage with water to dislodge; use neem oil or insecticidal soap if severe. Ensure adequate air circulation.
-
Remove by hand or use insecticidal soap. Rarely requires treatment on established plants.
-
Ensure good air circulation, reduce overhead watering. Apply sulfur dust or potassium bicarbonate fungicide if needed.
-
and
Remove by hand, use beer traps, or apply food-grade diatomaceous earth around base.
Uses
Evening Primrose Oil
CulinaryThe seeds of Oenothera species contain gamma-linolenic acid (GLA), which can be pressed into nutritional oil used as a dietary supplement. [source]
Traditional Herbal Use
MedicinalEvening primrose has been used traditionally in herbal medicine for immune support and skin health, though scientific evidence varies. [source]
Cut Flowers & Dried Arrangements
HouseholdThe cheerful blooms are suitable for fresh-cut flower arrangements and can be dried for long-lasting décor in dried flower crafts. [source]
Pollinator Support
WildlifeEvening primroses are excellent nectar sources for bees, moths, and other pollinators, particularly evening-active species attracted to night-opening flowers. [source]
Garden Design & Landscaping
CraftThe low-growing habit, golden color, and extended bloom period make Sundrops Gold ideal for borders, rock gardens, containers, and xeriscaping projects. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Sundrops Gold is primarily grown for ornamental display rather than harvest. For cut flowers, pick stems in late afternoon when buds are about to open. Place in water immediately. To collect seeds, allow some flowers to fade on the plant, then harvest seed pods in late summer/early fall when they turn brown and papery. Dry pods indoors and extract seeds.
Fun Facts
- 🌱 Sundrops Gold exhibits nyctinasty—flowers that open in late afternoon and close by morning—a behavior that attracts specialized evening pollinators like nocturnal moths.
- 🌱 The common name 'evening primrose' is misleading; these plants are not true primroses and belong to the Onagraceae (evening primrose) family instead of the Primulaceae family.
- 🌱 Oenothera fruticosa is native to eastern North America and has been cultivated for centuries, with various cultivars selected for flower color, size, and growth habit.
Gardening Terms
New to gardening? Learn about terms used in this guide:
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Sundrops Gold planting timeline
Tell us your zip code and we'll calculate exactly when to start Sundrops Gold seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Sundrops Gold timeline →