Turkey oak
Quercus cerris · Fagaceae
📷 Giuseppe Frizzi · Public domain
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around turkey oak and prepare for winter.
ID card
- Common name
- Kermes oak
- Family
- Fagaceae
- Type
- Deciduous tree
- Mature height
- 18 to 20 m
- Mature width
- 12 to 15 m
- Flowering
- May to June
- Hardiness
- Very hardy (-20 °C)
- Origin
- Southern Europe and Asia Minor
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Sessile oak is a powerful oak that hates being moved once established: plant in its final position and let it be. No supplemental watering after the first 2-3 years, except in extreme drought—deep rooting is enough.
The common mistake
Regularly watering an adult oak in normal years: this weakens deep roots and makes the tree sensitive to stress.
The pro's trick
When planting, dig a wide but shallow hole (15 cm deeper than the root ball) and pack the soil firmly around it.
Care
Sunlight exposure
Your Kermes oak appreciates full sun for optimal growth. It tolerates light partial shade, though it will flower and fruit less abundantly. Position it sheltered from strong winds if possible, in an open location where it can thrive fully.
Watering
Water regularly during planting and the first year, then regularly during prolonged dry spells. Once established, your Kermes oak needs little watering thanks to its deep root system. Avoid waterlogging, especially in compacted soil.
Soil preparation
Your Kermes oak adapts to most soils but prefers well-draining, slightly chalky earth. Enrich the soil with organic matter at planting time to facilitate rooting. Apply 5 to 10 cm of mulch to protect roots and retain moisture.
Pruning and maintenance
Little intervention needed: remove dead or diseased branches in late winter. Shape the crown if necessary in young years to develop a nice structure. Avoid severe pruning, which weakens the tree.
Nutrition
An application of organic fertilizer or composted amendment at planting time is generally sufficient. For young growing trees, light fertilizing in spring can accelerate development.
Health and prevention
Your Kermes oak is resistant to most pests and diseases. Watch for cankers or rot in case of excessive humidity. Removing dead wood and ensuring good air circulation limits fungal problems.
Did you know?
The Kermes oak is the preferred host tree of kermes (Kermes vermilio), an insect that once fed on its leaves: in the Middle Ages, this insect was dried and transformed into a precious dye to color fabrics red or purple, worth its weight in gold! Its hard, dense wood also served historically in the crafting of small furniture and tools.
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.
Add this plant to my garden →Plants from the same family
- Pedunculate oakQuercus robur
- European beechFagus sylvatica
- Sessile oakQuercus petraea
- Sweet chestnutCastanea sativa
- Downy oakQuercus pubescens
- Holm oakQuercus ilex
Tips generated and checked by Viridia — adapt them to your local climate.