How to Grow California Golden Poppy 'Orange King'
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California Golden Poppy 'Orange King'
Eschscholzia californica 'Orange King'
flowerCalifornia Golden Poppy 'Orange King' is a vibrant cultivar of the state flower of California, known for its brilliant deep orange blooms that close at night and on cloudy days. This annual wildflower produces delicate, cup-shaped flowers on feathery blue-green foliage, creating a cheerful, naturalistic display in gardens. It self-seeds readily and thrives in poor, well-draining soils where many other plants struggle.
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Example California Golden Poppy 'Orange King' timeline · Pittsburgh, PA (Zone 6b)
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Plant California Golden Poppy 'Orange King'
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First California Golden Poppy 'Orange King' blooms
Around Jun 1≈ 45 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-10; prefers cooler to warm climates with low humidity
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Germination
1-2 weeksSeeds sprout and tiny seedlings emerge with cotyledons
Do not cover seeds; keep soil lightly moist until sprouting. Germination occurs in 7-14 days at 60-70°F. No transplanting needed if direct sown.
Seedling & Vegetative Growth
3-4 weeksFine, feathery blue-green foliage develops; plant remains compact and bushy
Thin seedlings to proper spacing. Water moderately. Do not fertilize; overfertilizing causes excessive foliage at the expense of flowers. Reduce watering as plant matures.
Flowering
6-10 weeks or until frostDeep orange, silky cup-shaped flowers appear on multiple stems; blooms open in morning, close at dusk and during cloudy weather
Deadhead spent flowers to encourage continuous blooming. Ensure full sun exposure for maximum blooming. Water only during extended dry spells. Peak blooming occurs in cool weather.
Seed Development & Self-Seeding
4-6 weeks after floweringFlowers fade and elongated seed pods develop; pods dry and split naturally, scattering seeds
Allow some flowers to go to seed if you want self-sown plants next season. Let seed pods mature and dry on the plant before they split. Do not deadhead all flowers if you want reseeding.
Frost Decline
Until first frostPlant dies back after first frost in fall or at season's end in hot climates
Plant is frost-sensitive; a single hard freeze kills it. Allow to decline naturally to encourage spring reseeding. Clear dead material to prevent pest overwintering.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with strong water stream or use insecticidal soap. Introduce ladybugs or parasitic wasps.
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Increase humidity by misting, use neem oil spray, or introduce predatory mites.
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and
Remove by hand, use copper tape barriers, or apply diatomaceous earth around base of plants.
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Use row covers on seedlings, spray with neem oil, or dust with diatomaceous earth.
Uses
Edible flowers and petals
CulinaryCalifornia poppy petals are edible with a mild, slightly sweet flavor. They can garnish salads, cakes, and other dishes for visual appeal and subtle taste. [source]
Traditional herbal remedy
MedicinalCalifornia poppy has been traditionally used in herbal medicine to support relaxation and sleep. Modern herbal preparations use flower and leaf material for their mild sedative properties. [source]
Natural dye source
HouseholdPetals can be used to create natural dyes ranging from yellow to orange hues for textiles and crafts, though the color may not be entirely permanent. [source]
Pollinator support
WildlifeBright orange blooms attract bees, butterflies, and other pollinators. Self-seeding provides food sources throughout seasons in suitable climates. [source]
Garden ornamental and wildflower mixes
CraftWidely used in xeriscaping, meadow gardens, and native plant landscapes. 'Orange King' adds bold color to dry garden designs and cottage-style plantings. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
California poppies are not typically harvested for food or prolonged arrangement, as cut flowers wilt quickly. For seed collection, allow pods to mature on the plant until they turn brown and papery, then collect and dry them indoors before scattering. Cut flowers for short vase display by harvesting in early morning; blooms will close if picked.
Fun Facts
- 🌱 California Golden Poppy is the state flower of California and has been since 1903; the blooms famously blanketed hillsides so densely that Spanish explorers named the region 'Land of Fire.'
- 🌱 The flowers are nyctinastic, meaning they open and close with daylight—they close at night, on cloudy days, and before rain as a water conservation strategy.
- 🌱 Seeds require light to germinate and will not sprout if buried; this adaptation ensures they germinate on the soil surface where they have the best chance of establishing in their native arid habitat.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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