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Common Walnut: Growing Juglans regia
Trees

Common Walnut: Growing Juglans regia

Juglans regia

Common walnut care (Juglans regia): large tree for edible nuts and fine timber. Full sun, deep fertile soil, frost hardy, flowers in spring.

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Characteristics

Scientific nameJuglans regia
Height15-25 m
Sunlightpieno sole
Watermedia
Soilprofondo fertile
Toxicitylievemente tossica
Growthmedia
Temperature-20 a 35 °C
FloweringApr, May
IrrigationWater young trees regularly during dry spells; mature trees are self-sufficient except in long summer droughts.

The common walnut (Juglans regia) is a large deciduous tree grown for its edible nuts and valuable timber. It wants full sun and deep, fertile, well-drained soil and is frost hardy. It produces juglone, a compound that suppresses other plants under its canopy. It reaches 15-25 metres and flowers in spring.

Flowering season

JanFebMarAprMayJunJulAugSepOctNovDec

Practical tips

Watering

Water needs: media — always check soil moisture before watering.

Position

Prefers pieno sole: provide the right light and rotate the plant for even growth.

Substrate

Recommended soil: profondo fertile. Refresh the substrate every 1-2 years.

Leaves

Dust the leaves with a damp cloth to support photosynthesis.

Feeding

Feed during the growing season (spring-summer) and stop in winter.

FAQ

When does a walnut tree start to produce nuts?
A seedling walnut bears its first nuts after 8-12 years, while grafted varieties fruit in 4-6 years; full cropping comes around 15-20 years.
Why does nothing grow under a walnut tree?
The walnut releases juglone, a compound that inhibits many plants: avoid growing vegetables or beds within and beyond the canopy spread.

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