Position
Young trees benefit from shade; consider planting it in a partially shaded area. It’s important to provide adequate spacing from other plants (8-10 metres apart) when planting mangosteen trees to minimize competition. While mangosteen trees have strong and extensive roots, they are not classified as invasive and can be managed properly. Choose a location where their root system won’t interfere with structures, pathways, or other plants.
Mangosteen trees have a relatively deep taproot, which helps them access moisture and nutrients. They also develop lateral roots that can spread out horizontally.
Soil
Prefers well-drained, sandy loam soil rich in organic matter. A pH level between 5.5 and 7 is ideal; add a bag of acid compost.
Watering
Keep the soil consistently moist, especially during dry periods. Avoid waterlogging, as this can harm the roots.
Mulch
Apply mulch to retain moisture and suppress weeds.
Use from 2 to 5 centimetres of pine bark mulch to protect the roots from UV damage and drying out. It retains moisture, and maintains an optimal pH. Do not let the mulch touch the plant stem, as it may cause infection or rot.
Fertilising
Apply our slow-release all-plant fertiliser. Apply 1 teaspoon every 4-5 months. The roots will absorb what they need.
Pruning
Prune to remove dead or diseased branches and to shape the tree, and also helps improve air circulation.
Pest and Disease Management
Monitor for pests like fruit flies and aphids. Fungal infections can be a concern; Treat promptly or preferably use preventative measures by spray with agricultural Neem Oil or Effective Microorganisms (EM Control).
Maintaining good hygiene around the plant and ensuring proper drainage can help prevent issues.
Harvesting
Mangosteen usually takes 3-5 years to bear fruit. Fruits are ready to harvest when they are a deep purple color and slightly soft to the touch.
Carefully cut the fruit from the stem to avoid damaging the tree.
