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Kermes oak

Quercus coccifera · Fagaceae

The gardener's calendar

The right move for September

In autumn, ease off feeding and take the chance to clean up around kermes oak and prepare for winter.

JFMAMJJASOND Planting

ID card

Foliage
Evergreen, leathery and spiny
Flowering
Spring (April-May), inconspicuous flowers
Mature size
4 to 8 m in height, compact bushy form
Growth
Slow to moderate
Hardiness
Very hardy, tolerates down to -15 °C
Origin
Mediterranean basin (garrigue and maquis)
Soil type
Calcareous, well-drained, poor to medium
Exposure
Full sun mandatory

Care

Exposure

The kermes oak demands full sun to thrive and develop its sturdy, compact form. Partial shade will slow its growth and weaken its structure. Place it in an open, sunny location with good sunlight all year round.

Soil and drainage

This Mediterranean species prefers calcareous, rocky and well-drained soils. It adapts to poor soils and doesn't require high fertility. Absolutely avoid heavy, clayey or waterlogged soils which cause root rot.

Watering

Once established (after 2-3 years), the kermes oak is very drought-tolerant and requires little watering. Young plants will need regular watering for the first few months. In Mediterranean regions, natural rainfall is usually sufficient.

Pruning and structure

No pruning is necessary; let it develop its natural bushy form. To limit spread or remove dead branches, prune lightly in late winter. Avoid severe pruning which weakens the plant.

Fertilizer

No fertilizer is needed on natural soil. In containers or very poor soil, light feeding in spring is enough. Use low-nitrogen compost or fertilizer to maintain its hardiness.

Diseases and pests

This species is very resistant. No specific treatment is generally required. Occasionally watch for wood-boring insects in case of prolonged water stress, but the plant recovers quickly under normal conditions.

Did you know?

The kermes oak is known for hosting the kermes scale insect (Kermes vermilio), whose scarlet shell once provided a precious dye called 'kermes'. This dye rivaled Central American cochineal and colored European royal robes until synthetic dyes arrived. Its scientific name 'coccifera' literally means 'bearing cochineal insects'.

Where to buy it

Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.

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