How to Grow Durian
Durio zibethinus
Durian is a strictly tropical fruit tree requiring consistent warmth (24-32°C), high humidity (75-80%), and abundant rainfall (1500-2000mm/year). It cannot tolerate any frost. Plant in deep, well-drained loamy soil with shelter from strong winds. Trees are large (15-25m) and need 10m spacing. Flowers are bat-pollinated and appear on the trunk (cauliflorous). Expect first fruit 4-8 years from seed, 3-5 years from grafted stock. Harvest when fruits drop naturally or emit a strong aroma.
Yearly Lifecycle
Care Essentials
Apply a balanced NPK fertiliser (15-15-15) every 3 months for young trees. Once fruiting, switch to high-potash feed (12-12-17) before flowering and during fruit development. Supplement with organic matter (composted manure) twice yearly.
Watch For
- Phytophthora palmivora (patch canker)
- Durian fruit borer
- Rhizopus fruit rot
- Scale insects
- Leaf spot disease
Track your Durian care schedule — pruning, feeding, and seasonal tasks
Start planning freeCare Requirements
☀️ Light
Full sun; sheltered from strong winds
Full sun is essential for fruiting. Choose a site sheltered from strong winds which can damage large leaves and knock developing fruit off branches. Young trees benefit from partial shade for the first 1-2 years.
🌿 Spacing
10m between trees minimum
Durian develops a massive canopy (up to 12m spread) and extensive root system. Space trees at least 10m apart. Commercial orchards use 9-12m depending on cultivar vigour and pruning regime.
💧 Watering
Consistent moisture; 1500-2000mm rainfall annually
Requires consistent moisture year-round. In areas with seasonal dry spells, irrigate deeply every 3-5 days. Reduce watering slightly 2-3 weeks before expected flowering to induce flower bud initiation. Resume heavy watering once fruit sets.
🌱 Fertilizing
Balanced NPK quarterly; high-K before fruiting
Young trees need balanced NPK (15-15-15) every 3 months. Fruiting trees benefit from high-potash feed (12-12-17) applied before flowering and during fruit development. Supplement with organic matter and micronutrients (boron, zinc) twice yearly.
✂️ Pruning
Light post-harvest pruning; preserve trunk fruiting wood
Prune lightly after harvest to remove dead, diseased, and inward-growing branches. Durian is cauliflorous so never remove major trunk or branch wood. Focus on thinning the canopy for air circulation and light penetration.
🍂 Mulching
10-15cm organic mulch year-round
Maintain a thick layer (10-15cm) of organic mulch (coconut husks, wood chips, or leaf litter) around the root zone year-round. Keep mulch 30cm away from the trunk to prevent collar rot. Mulching conserves moisture and suppresses weeds.
🍎 Harvesting
Collect fallen fruit daily; use safety nets
Fruits ripen 90-120 days after flowering and fall when ready. Install nets beneath the canopy to catch heavy spiny fruit safely. Alternatively, harvest when the stem shows natural cracking and the fruit emits a strong characteristic aroma. Handle with thick gloves due to sharp spines.
Growing Tips
Tropical warmth is non-negotiable
Durian demands consistent tropical warmth (24-32°C) with no frost exposure. Even brief cold snaps below 10°C can cause leaf drop and branch dieback.
Protect the trunk for fruiting
Durian is cauliflorous — flowers and fruit grow directly on the trunk and main branches. Never prune major limbs heavily or you remove future fruiting wood.
Bat pollination needs dark skies
Flowers open at dusk and are pollinated by fruit bats. Avoid pesticide spraying in the evening during flowering to protect pollinators.
Net the canopy at harvest time
Mature durian fruit is heavy (2-4kg) and falls when ripe. Install safety nets beneath the canopy during harvest season to prevent injury and fruit damage.
Pests & Diseases
Pest Durian Fruit Borer
Identification: Small entry holes in developing fruit with frass (sawdust-like excrement) visible at the hole. Larvae tunnel into flesh causing internal brown rot and premature fruit drop
- Remove and destroy all infested fruit immediately to break the lifecycle
- Wrap developing fruit in mesh bags to prevent adult moth oviposition
- Apply Bacillus thuringiensis (Bt) spray to developing fruit
- Apply systemic insecticide during early fruit development stage
Pest Durian Psyllid
Identification: Tiny jumping insects on young shoots and leaf undersides. Leaves curl, distort, and develop yellow spots. Heavy infestations cause shoot dieback and reduced vigour
- Spray with neem oil or insecticidal soap targeting the undersides of young leaves
- Encourage natural predators such as ladybirds and lacewings
- Prune and destroy heavily infested shoots
- Apply a systemic insecticide containing imidacloprid during new flush growth
Pest Scale Insects
Identification: Small brown or white dome-shaped insects clustered on branches and leaf undersides. Honeydew secretion leads to sooty mould on leaves, reducing photosynthesis
- Scrub off with a stiff brush dipped in soapy water
- Spray with horticultural oil to smother adults
- Encourage parasitic wasps as biological control
- Apply systemic insecticide in spring when crawlers are active
Disease Phytophthora Patch Canker Phytophthora palmivora
Symptoms: Dark, wet lesions on the trunk and main branches that ooze reddish-brown sap. Bark becomes soft and peels away. Canopy above infected areas wilts and dies back
Treatment: Scrape away all infected bark to clean tissue. Apply copper-based fungicide paste to wounds. Improve drainage around the root zone
Prevention: Avoid wounding the trunk. Ensure good drainage. Apply phosphonate trunk injections as preventative treatment. Keep mulch away from the trunk base
Disease Rhizopus Fruit Rot Rhizopus stolonifer
Symptoms: Soft, watery rot on harvested fruit that spreads rapidly. White then black fuzzy mould develops on the fruit surface. Strong fermented odour distinct from normal durian aroma
Treatment: Remove and destroy infected fruit immediately. Improve air circulation during storage. Handle fruit carefully to avoid wound entry points
Prevention: Harvest at correct maturity. Minimise physical damage during harvest and transport. Store in well-ventilated conditions. Apply post-harvest fungicide dip if permitted
Disease Leaf Spot Disease Colletotrichum spp.
Symptoms: Circular brown spots with dark margins on leaves. Spots may coalesce in wet conditions causing premature leaf drop. Young leaves are most susceptible
Treatment: Remove and destroy heavily infected leaves. Improve canopy air circulation through pruning. Apply copper-based fungicide during wet periods
Prevention: Maintain open canopy for good air flow. Avoid overhead irrigation. Clear fallen leaf debris promptly
Log Durian in your garden — track growth, care, and harvests year after year
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