How to grow Sweet Chestnut in Australia
The sweet chestnut (Castanea sativa and its hybrids) is a large, long-lived nut tree for cool climates, with spiky burrs that split in autumn to drop two or three glossy brown nuts. Most of Australia's chestnuts are grown in north-east Victoria, and the trees also suit the tablelands, the mountains and other cold-winter districts. Plant two varieties for pollination, and give them a lot of room.
📖 Our full guide: How to Grow Chestnut in Australia
At a glance
When to plant by region
| Region | When to plant | Regional note |
|---|---|---|
| South East Queensland | Not suited | Not viable in SEQ. A tableland and alpine tree that needs a cold winter. |
| Northern Rivers NSW | Not suited | Not viable. Chestnuts need a cold tableland winter. Too warm on the coast and in the hinterland. |
| Sydney & Coastal NSW | June to August | Cold western gardens and the mountains only; the coast is too warm and humid. Plant bare root Jun to Aug and allow for a large tree. |
| Melbourne & Victoria | June to August | |
| Adelaide & SA | June to August | |
| Perth & WA | June to August | |
| Tasmania | June to August | |
| Canberra & ACT | June to August | |
| North Queensland | Not suited | Not viable. Chestnuts need a cold winter. Impossible in the tropics. |
| Darwin & Top End | Not suited | Not viable. Chestnuts need a cold winter. Darwin has none. |
Where to plant
Plant chestnuts in full sun in deep, well-drained, slightly acid soil. They are very prone to root rot (ink disease, caused by Phytophthora) in wet or poorly drained ground, so never plant them where water lies. They need a cold winter and do best on the tablelands and in cool inland and hills districts.
The trees grow very large, so allow at least 10 m between trees and from buildings.
- Canberra, Hobart, Melbourne and the cool hills around Adelaide and Perth: good chestnut country.
- Sydney: the cold western suburbs and the Blue Mountains only; the coast is too warm and humid.
- South East Queensland, the Northern Rivers, North Queensland and Darwin: not viable, as there is no cold winter.
Choosing a variety
- Chestnuts are not self-pollinating. Plant at least two different varieties that flower together, or a single tree may produce empty burrs.
- Varieties recommended in Australia include Bouche de Betizac, Purtons Pride, MP2 and Red Spanish.
- Buy grafted trees of named varieties from a reputable nursery.
How to plant
- Plant bare root trees in winter while they are dormant, in the best-drained spot you have; on heavy soil, plant on a broad mound.
- Space trees about 10 m apart, but keep the two varieties close enough for wind to carry pollen between them.
- Spread the roots, keep the graft union above the soil, water in and mulch, keeping the mulch off the trunk.
- Water young trees through dry summers for the first few years.
Watering and feeding
Water young trees deeply in dry spells, and water mature trees in long dry summers while the nuts are filling. Never keep the soil wet, which brings on ink disease.
Feed lightly with compost or a balanced fertiliser in late winter while trees are young. Avoid lime; chestnuts prefer slightly acid soil.
Pruning and care through the year
- Prune young trees in winter to a strong framework with a clear trunk, high enough to walk and mow under.
- Rake up and clear the ground under the tree before harvest so fallen nuts are easy to find.
Harvesting
In autumn, from about late March into May, the burrs split open and drop their nuts. Collect the fallen nuts every day or two, as they dry out and spoil quickly on the ground. Wear thick gloves to handle the very spiky burrs.
Store fresh chestnuts in the fridge in a container that is not fully sealed. At room temperature they dry out, soften and lose flavour. Kept cold, they last for weeks to months.
Using it
- Roast, boil or steam chestnuts, then peel off the shell and the bitter inner skin. Cut a slit in the shell first so the nuts do not burst while cooking.
- Use cooked chestnuts in stuffings, soups and desserts, or dry and grind them into flour.
Pests and diseases
Root rot in wet soil is the main problem for home-grown chestnuts. Chestnut blight is a serious biosecurity disease that is under official control in Victoria.
Sweet Chestnut is rarely troubled by pests.
Diseases to watch for
- Ink disease Leaves yellow and wilt, the canopy thins and dark, inky stains appear at the base of the trunk. Caused by Phytophthora in wet soil.
- Chestnut blight Orange to brown cankers on bark, with wilting, dying branches. Report suspected cases; do not move chestnut plants or wood from north-east Victoria.
Common questions
Do you need two chestnut trees?
Yes. Chestnuts are not self-pollinating, so plant at least two different varieties close enough for the wind to carry pollen between them. A single tree often produces empty burrs.
When do chestnuts fall in Australia?
In autumn, from about late March into May. The burrs split and the ripe nuts drop to the ground. Collect them every day or two.
How do you store fresh chestnuts?
In the fridge, in a container that is not completely sealed. At room temperature they quickly dry out and soften.
Is chestnut blight in Australia?
Yes. It was found in north-east Victoria in 2010. Eradication was found to be no longer feasible in 2019, and it is now managed by the Victorian Government and Chestnuts Australia with a quarantine zone and movement restrictions on chestnut and oak plant material. Report suspected cases to Agriculture Victoria.
Can chestnuts grow in Sydney or Brisbane?
Not on the coast. Chestnuts need a cold winter. In Sydney they grow in cold western gardens and the Blue Mountains. South East Queensland is too warm.
How big does a chestnut tree get?
Very large, often 8 to 20 m tall with a wide crown, so it suits a large garden or rural block.
Sources we checked: IPPC (Australian pest report): Chestnut blight in Victoria, 2022; IPPC (Australian pest report): Confirmation of chestnut blight in north-east Victoria, 2010; ABC Organic Gardener: Get cracking (chestnuts); Chestnuts Australia: Aussie chestnuts media update 2018; Hort Innovation: Phytophthora root rot management in chestnut orchards (CH14002).