How to Grow Griffith's Spurge
iNaturalist
Griffith's Spurge
Euphorbia griffithii
shrubEuphorbia griffithii is a semi-evergreen to deciduous perennial shrub known for its striking orange-red bracts and attractive foliage that turns copper-red in autumn. It spreads via underground rhizomes and can reach 2-3 feet tall, making it an excellent choice for borders and mixed plantings. This showy spurge adds vibrant color from late spring through summer.
When should you plant Griffith's Spurge in your zone?
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Example Griffith's Spurge timeline · Pittsburgh, PA (Zone 6b)
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Plant Griffith's Spurge
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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Harvest Griffith's Spurge
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives best in USDA zones 5b-9a; may require winter protection in zone 5
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Get my Griffith's Spurge timeline →Growth Stages
Establishment
First 3-6 monthsYoung plant developing root system and initial growth after planting
Water regularly to establish roots. Apply mulch around base. Protect from harsh winds and extreme cold in first winter.
Vegetative Growth
Spring to early summer (3-4 months)Plant develops multiple stems with lance-shaped green foliage; grows rapidly in spring and early summer
Apply balanced fertilizer in spring. Monitor for spreading rhizomes if space is limited. Prune back any frost-damaged growth in spring.
Flowering & Bracting
Late May through July (6-8 weeks)Distinctive bright orange-red bracts appear at stem tips, surrounding small yellowish flowers; peak color display
Maintain consistent moisture but avoid overwatering. Deadhead spent flower heads if desired, though bracts persist for weeks.
Summer Color & Foliage
July through SeptemberFoliage remains ornamental with reddish tones developing; bracts fade but remain attractive
Water during drought. Reduce fertilizer. Monitor for pests. Cut back leggy growth if needed to maintain shape.
Fall Transition & Dormancy
October through MarchFoliage turns copper-red and bronze in autumn; plant prepares for winter by dying back or becoming semi-dormant
Reduce watering significantly. Do not fertilize. In cold zones, mulch heavily around crown for winter protection. Cut back dead stems in early spring.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray foliage with water to dislodge; use neem oil if infestation is severe. Increase humidity.
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Remove with rubbing alcohol on cotton swab; spray with insecticidal soap if widespread.
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Scrape off manually; apply horticultural oil in dormant season or neem oil during growing season.
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Remove by hand; apply copper barriers or slug traps; encourage ground beetles.
Uses
Cut & Dried Arrangements
CraftThe striking orange-red bracts and attractive foliage make excellent material for fresh and dried flower arrangements. Cut stems in mid-flowering stage and condition in water before arranging. [source]
Pollinator Garden
WildlifeWhile not a primary nectar source, the flower clusters attract bees and other beneficial insects. It provides color and structure in wildlife-friendly borders. [source]
Ornamental Landscape Design
HouseholdThe vibrant summer color and autumn foliage make it ideal for mixed borders, rock gardens, and contemporary landscapes. Its moderate size and spread work well for mid-to-back border placement. [source]
Traditional Herbal Use
MedicinalEuphorbia species have been used in traditional medicine systems, though modern use requires caution due to the caustic sap. Any medicinal applications should only be undertaken under professional guidance. [source]
Not for Consumption
CulinaryEuphorbia griffithii is NOT edible and should never be ingested. The milky sap is toxic and can cause severe gastrointestinal upset and skin irritation. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Euphorbia griffithii is grown ornamentally rather than harvested. Cut stems can be used in fresh or dried arrangements; wear gloves as sap can irritate skin. Deadheading spent bracts extends the visual display.
Fun Facts
- 🌱 The bright orange-red structures that appear on the plant are actually modified leaves called 'bracts,' not true flowers; the actual flowers are tiny and appear at the center of these colorful bracts.
- 🌱 Euphorbia griffithii is named after botanist John Griffith, who worked extensively with Indian flora in the 19th century.
- 🌱 The plant produces a milky sap that can irritate skin and eyes; always wear gloves when handling, and wash hands thoroughly after pruning or deadheading.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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