TreesCommon Walnut is a majestic tree with a broad, domed crown and aromatic, compound foliage. From late summer, the familiar walnuts ripen inside their green husks. The tree can live for centuries and yields valuable timber. The leaves contain juglone, a substance that suppresses the growth of some neighbouring plants.
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Characteristics
- Sun
- Full sun
- Water
- Medium
- Height
- 1000–2500 cm
- Spread
- 800–1500 cm
- Hardiness zone
- 5–8
- Family
- Juglandaceae
- Evergreen
- No
- Flower colors
- green
- Wildlife value
- birds, squirrels
Bloom period
Care guide
Plant in full sun in deep, moisture-retentive, calcareous soil. Walnut has deep roots and does not tolerate transplanting once established. Protect young trees from late spring frost that can damage the blossom. Be aware of the allelopathic effects of juglone on nearby plants.
Pruning tips
Prune as little as possible — walnut bleeds heavily when cut. If pruning is necessary, do so in late summer or early autumn. Remove only dead wood and low-hanging branches.
Good companions
TreesBetula pendula
Silver Birch
Silver Birch is a graceful, fast-growing tree with striking white bark that peels in thin layers over the years. The fine, pendulous branches give the tree an airy, elegant silhouette. In autumn, the small triangular leaves turn bright yellow.
TreesMalus domestica
Apple Tree
The apple tree is a classic fruit tree that becomes covered in pink-white blossom in April and May — an irresistible spectacle for people and pollinators alike. In autumn, apples follow, ripening early or late depending on the variety. An apple tree in the garden offers blossom, fruit, shade, and habitat for countless creatures.
TreesCorylus avellana
Common Hazel
The hazel is a native large shrub or small tree that enlivens the garden as early as February and March with long, golden-yellow catkins — one of the first food sources for bees after winter. In autumn, hazelnuts follow in their characteristic green husks. Hazel grows multi-stemmed and makes a beautiful native hedge or specimen.
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