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Flowering spurge

Euphorbia corollata · Euphorbiaceae

The gardener's calendar

The right move for September

Ideal time to plant flowering spurge: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

JFMAMJJASOND Planting

ID card

Family
Euphorbiaceae
Plant type
Perennial herbaceous
Adult height
24 to 35 inches
Flowering
June to September
Foliage
Deciduous
Hardiness
Down to -4 °F
Exposure
Full sun to partial shade
Origin
North America

Care

Watering

Water moderately when establishing the plant. Once well-rooted, flowering spurge tolerates drought well and only needs watering during prolonged dry spells. Avoid excess moisture, which can promote root rot.

Exposure

Plant in full sun for optimal flowering and compact growth. It also tolerates partial shade, especially in very hot regions, where it can appreciate light afternoon shade.

Soil and drainage

Prefer well-draining soil, dry to cool, enriched with organic matter at planting time. This plant adapts to ordinary, even poor soils, and fears stagnant moisture more than limited fertility.

Pruning and cleaning

Prune lightly in early spring to encourage branching. Remove dried stems in late autumn or winter. Regular deadheading extends the flowering period.

Fertilizing

Apply balanced fertilizer in spring during the growing season. Avoid excess nitrogen, which promotes foliage at the expense of flowers. Plants too rich in organic matter become less hardy.

Diseases and pests

Generally robust and rarely affected by pests. Watch for root rot in case of persistent excess moisture. Aphids may occasionally visit, but cause no major damage.

Did you know?

Flowering spurge owes its scientific name 'corollata' to the arrangement of its flowers: those white 'petals' are actually sterile nectary glands surrounding the true reduced flowers, an evolutionary strategy to attract pollinators. Native Americans used this plant for medicinal purposes, though its tear-inducing properties make it inadvisable today.

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.

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Tips generated and checked by Viridia — adapt them to your local climate.