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French crane's-bill

French crane's-bill

Geranium endressii · Geraniaceae

🌿 Common garden plant

📷 A. Barra · CC BY 3.0

ExposurePartial shade
WateringModerate watering
Hardiness~-18 °C
Mature size~50 cm
CareEasy
Bloomingfrom May to September
🐝 Bee-friendly

The gardener's calendar

The right move for September

French crane's-bill is in full bloom: enjoy it, watch watering in hot weather and let spent flowers feed pollinators before pruning.

JFMAMJJASOND Bloom Planting

ID card

Common name
Endress's Geranium
Family
Geraniaceae
Type
Herbaceous perennial
Adult height
About 50 cm
Foliage
Deciduous to semi-evergreen
Flowering
May to September (5-6 months)
Hardiness
Very hardy (zone 4-5)
Origin
Pyrenees (France/Spain)

✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.

Expert tips

✓ Taxonomy verified

The key tip

Endress geranium blooms for a long time if you remove spent flowers and keep the soil slightly rich, moist but well-drained.

The common mistake

Leaving spent flowers on the plant slows down new bud production: it's the trap that turns a prolific bloomer into an overgrown mess.

The pro's trick

A light application of balanced fertilizer in June supports flowering without pushing excessive foliage.

Care

Light exposure

Endress's Geranium appreciates partial shade to full sun exposure, with at least 4 hours of direct sunlight daily. It tolerates partial shade well and thrives better in warm climates with light afternoon shade. Avoid intense full sun in Mediterranean regions.

Watering

Keep the soil regularly moist, especially during growth and flowering periods. Water deeply once or twice a week depending on conditions. Reduce watering in winter. Once established, it tolerates slight dryness between waterings.

Soil

This plant prefers well-draining, fertile soil rich in organic matter. Fresh, permeable potting soil works perfectly. Avoid overly compact soils or prolonged waterlogging, as the rhizome may rot.

Fertilizing

Apply balanced fertilizer once or twice monthly during the flowering period (May to September). A light application of compost in spring is generally sufficient. No special needs in winter.

Pruning and maintenance

Pinch young shoots in spring to encourage better branching and a compact form. Remove spent flowers regularly to extend flowering. In late autumn, cut the plant back to 15-20 cm from the ground or simply clean up the dried parts.

Diseases and pests

Endress's Geranium is generally robust and rarely subject to disease. Watch for powdery mildew in cases of excessive humidity and poor air circulation. Root rot can occur on overly wet soil; ensure optimal drainage.

Did you know?

Endress's Geranium is named after Austrian botanist Stephen Endlicher (1804-1849), a great explorer and naturalist. Native to the Pyrenees, this geranium was long appreciated by Victorian English gardeners for its generous flowering and hardiness, becoming a classic in cottage gardens.

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.