Gajus
Cashew
Anacardium occidentale
The Cashew tree (Anacardium occidentale) produces both the famous cashew nut and the large, juicy cashew apple (buah gajus), which is eaten fresh or pressed into juice in Malaysia. A drought-tolerant, coastal-adapted tree that grows vigorously in Malaysia's tropical heat and fruits reliably year after year.
Care Guide
Light Requirements
Full sun. Cashew responds quickly to light quality; weak light usually gives lanky growth and slower recovery after pruning or harvest.
Temperature
20°C - 32°C. This range keeps Cashew metabolically active, while abrupt temperature shifts often show up as stress, slower growth, or bud drop.
Humidity
60% - 80%. Cashew tolerates local humidity better when air movement is good; stale humid air is where fungal trouble usually starts.
🌧️ Good news for Malaysia: Your home's natural humidity is already helping. Focus on airflow instead to prevent fungal issues.
Soil Preference
Deep, fertile, well-draining loamy soil with steady organic matter and good moisture retention.
Watering & Fertilizer
Water regularly. Fertilize monthly. Cashew does better with wet-dry balance than constant saturation. Overwatering blocks root aeration, then yellowing and stunting follow.
💭 Still unsure? Stick your finger 2 cm into the soil. If it feels dry, water. If it's moist, wait. You'll get it right.
General Care
Prune annually to maintain manageable height and strong framework. Remove crossing branches and train young trees to 3-4 main stems to encourage lateral branching and better fruit distribution. The distinctive cashew apple (false fruit) is often wasted but edible. sweeter than many realize. Mature trees need light pruning only to remove dead or diseased wood.
Propagation
Seeds or grafting (grafting recommended for faster fruiting). Cashew propagates more reliably from healthy, actively growing material, especially when humidity and warmth are stable after planting.
Pet Friendly?
The shell contains caustic urushiol-like oils, so nuts must be professionally processed before eating. The cashew apple is edible, but large amounts may still upset sensitive pets.
Medicinal Benefits
Nutritional benefits from nuts.
Other Uses
Nuts and fruit.
Pests & Diseases
Tea mosquito bug. With Cashew, prevention beats rescue: inspect undersides regularly and keep airflow moving to slow pest and fungal escalation.
Smart Tanam Tip
"Cashew nuts grow outside the fruit."
Common Mistakes in Malaysia
- Overwatering due to high humidity: Malaysia's moisture-rich air means soil dries slower. Most plant deaths come from root rot, not underwatering.
- Poor airflow: High humidity + still air = fungal issues. Move plants where air circulates naturally (near windows, not in corners).
- Ignoring the monsoon season: During heavy rain, reduce watering. Your plant is already getting moisture from the environment.
- Direct afternoon sun: Malaysian midday sun is intense. Even sun-loving plants can scorch. Morning sun is best.
Tips for Malaysia's Climate
- Use well-draining soil: Add perlite or cocopeat. Heavy soil + humidity = rot. Your soil should dry out between waterings.
- Water in the morning: Wet foliage at night is a recipe for fungal problems in humid climates. Early morning watering lets leaves dry quickly.
- Repot in spring: Before the dry season, refresh soil to prevent salt buildup and improve drainage.
- Watch for pests during monsoon: Wet season brings aphids, spider mites, and scale insects. Check undersides of leaves weekly.
- Increase airflow: Place a small fan nearby if the plant is indoors. Circulating air prevents humidity-related issues.
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Disclaimer: Tanam Je is an educational resource. Plant care outcomes vary by environment, weather, and handling. Tanam Je is not liable for plant loss or related damages.