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Walnut Chandler
Juglans regia Chandler
The 'Chandler' walnut is a very productive fruit tree, yielding large, thin-shelled walnuts with light-colored kernels. Hardy and reliable, it is perfectly suited to family orchards and sunny gardens.
Description
Height at maturity
8 to 12 m
Wingspan at maturity
6 to 8 m
Exposure
sun
Flowering
April
Hardiness
-25°C
Walnut ‘Chandler’ – Juglans regia ‘Chandler’
Main interest
The Walnut ‘Chandler’ is one of the most renowned cultivars worldwide thanks to its high and consistent yield, early fruiting, and excellent nut quality. Its large nuts with thin shells and light kernels make it highly appreciated by both commercial growers and home gardeners. Its naturally open growth habit improves sunlight penetration, enhancing fruit production. ‘Chandler’ is also known for its good resistance to diseases, particularly bacterial blight. With moderate vigor and strong lateral fruiting, it produces higher yields than traditional varieties. This cultivar combines productivity, flavor quality and reliability.
Origins and characteristics
Geographical origin
‘Chandler’ was developed in the 1970s at the University of California. It results from breeding programs aimed at improving yield, disease resistance and adaptability to temperate climates. Today, it is widely cultivated in many walnut‑producing regions.
Botanical family
Juglandaceae.
Notable features
‘Chandler’ is known for its high lateral fruiting, which significantly increases yield. Its nuts have a light, flavourful kernel highly valued on the market. The cultivar also shows good disease tolerance.
Description and features
‘Chandler’ forms a medium‑sized tree with an open, well‑structured crown. Its large, light‑green compound leaves provide pleasant summer shade. The tree begins producing early, often from the fourth or fifth year.
Mature height : 8 to 12 m
Mature spread : 6 to 8 m
Habit : Upright then spreading
Bark : Grey, fissured with age
Foliage : Deciduous, light green, large leaflets
Growth : Moderate
Hardiness : –20 °C to –25 °C
Flowering and fruiting
Flowering period
Flowering occurs in April and is relatively late, reducing frost risk. Male and female flowers appear separately on the same tree. Pollination is wind‑driven.
Flower description
Male catkins are yellowish and pendulous, while female flowers are small and discreet. They appear at the tips of young shoots. The flowering is subtle but essential for fruit set.
Fruits
‘Chandler’ produces large nuts with thin shells and light, tasty kernels. Harvest takes place in September or October depending on the region. The nuts crack easily and are highly appreciated for consumption.
Pollination
‘Chandler’ is partially self‑fertile, but yields significantly improve when paired with a compatible pollinizer. The best partners are Ronde de Montignac, Franquette, or Fernette, which match its flowering period. Planting one of these cultivars nearby greatly enhances fruit set and overall production.
Exposure and soil
Ideal exposure
Full sun is essential for good nut production. The tree thrives in warm summers and temperate climates. A bright location improves nut formation.
Suitable soil
Deep, fertile and well‑drained soil. Avoid compact or waterlogged soils. Slightly calcareous soils are tolerated.
Planting
Soil preparation
Loosen the soil deeply to support taproot development. Add mature compost without excess. Ensure good drainage.
Spacing
8 to 10 m between trees. This allows optimal crown development. It also facilitates harvesting.
Soil nature
Fresh, deep, fertile and well drained. Slightly calcareous soils are suitable. Avoid heavy clay.
How to plant
Dig a wide and deep hole. Place the root ball at soil level, backfill and water thoroughly. Mulch to retain moisture.
Watering
Water needs at planting
Regular watering to keep the soil fresh. This helps the tree establish well. Mulching is recommended.
Water needs at maturity
Moderate; the tree tolerates drought but produces better with slightly moist soil. Occasional watering in summer can improve nut size. Avoid excess water.
Pruning
When and how to prune
Prune in winter to shape the structure and remove dead wood. Avoid heavy pruning, as walnut trees heal slowly. An open crown improves fruiting.
Propagation
Possible methods
Grafting onto seedling rootstock to preserve cultivar traits. Seed propagation does not reproduce ‘Chandler’ true to type. Cuttings are rarely used.
Garden uses
Ideal placement
Large gardens, family orchards, sunny and open spaces. The tree provides pleasant shade in summer. Also suitable as a specimen tree.
Recommended plant associations
Almond, quince, fig, grapevine. Avoid plants sensitive to juglone. Prefer tolerant species.
Traditional uses
Walnuts are eaten fresh, dried or processed. Walnut wood is highly valued in fine woodworking. The tree symbolizes longevity in some cultures.
Pests and diseases
Possible sensitivities
‘Chandler’ is fairly resistant but may be sensitive to bacterial diseases in humid conditions. Young trees may attract aphids. Late frosts can damage flowering.
Prevention and natural treatments
Maintain good air circulation. Avoid overwatering. Use black soap in case of aphids.
Tips for good development
Plant in full sun in deep, fertile soil. Water regularly during the first years. Keep the soil around the trunk free of competition.
Cultivar differences and specificities
‘Chandler’ stands out for its high lateral fruiting, early production and large, light kernels. Its nut quality is particularly appreciated. It is one of the most reliable cultivars for temperate climates.
Features
- Common name : Walnut Chandler
- Family : Juglandaceae
- Category : fruit tree
- Spread : 6 to 8 m
- Foliage : deciduous
- Fruit : Large size, thin and regular shell, light-colored kernel, fleshy and very sweet, very fragrant
- Harvest : October
- Use : isolated - orchard
- Soil : rich and well-drained
- Habit : upright
- Growth : average
- Enemies : aphid
- Possible diseases : resistant to diseases
- Pollinator : Partially self-fertile. Pollinators: Ronde de Montignac, Franquette, Fernette
Expédition & livraison
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