Grainfield spurge
Euphorbia segetalis · Euphorbiaceae
The gardener's calendar
Ideal time to plant grainfield spurge: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Euphorbiaceae
- Type
- Annual or biennial herbaceous plant
- Mature height
- 30 to 60 cm
- Foliage
- Deciduous
- Flowering
- Spring to summer (April-July)
- Hardiness
- Low hardiness, frost-sensitive
- Origin
- Mediterranean and temperate regions of Europe
- Exposure
- Full sun to partial shade
Care
Exposure and light
Euphorbia segetalis appreciates sunny situations, ideally in full sun, for vigorous growth and generous flowering. Partial shade exposure is tolerated but may reduce blooming. Avoid overly shaded areas that weaken the plant.
Soil and planting
This euphorbia prefers well-draining, light soil that is rather poor to moderately fertile. Overly rich soil promotes vegetation at the expense of flowering. It tolerates both acidic and neutral conditions well; simply avoid waterlogging.
Watering
Water moderately, especially during the active growth period in spring. Once established, the plant tolerates temporary drought. In summer, reduce watering if rainfall is insufficient, but avoid excess water which promotes rot.
Fertilization
A balanced fertilizer application in spring is sufficient. Euphorbia segetalis is undemanding and prefers poor soil: overfertilization can harm flowering and weaken resistance.
Pruning and maintenance
No formal pruning is necessary. You can cut faded stems after flowering to encourage a compact shape and self-seeding. Remove dead or damaged parts as needed throughout the season.
Diseases and pests
This plant is generally robust. Watch for root rot in case of excessive or prolonged humidity. Pest infestations are rare. Ensure good air circulation to prevent fungal diseases.
Did you know?
Euphorbia segetalis is a classic sun-loving plant of ancient grain harvests in Mediterranean and temperate Europe, often observed in cereal fields. Its Latin name 'segetalis' directly refers to this historical association with wheat and barley crops, where it grew naturally before modern agricultural intensification.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Wood spurgeEuphorbia amygdaloides
- Caper spurgeEuphorbia lathyris
- Albanian spurgeEuphorbia characias
- Spiny spurgeEuphorbia spinosa
- Garden crotonCodiaeum variegatum
- Griffith's spurgeEuphorbia griffithii
Tips generated and checked by Viridia — adapt them to your local climate.