Thai jackfruit is a high-yielding variety known for producing large fruits with sweet, crisp flesh. A grafted Thai jackfruit plant can start fruiting in 2–4 years, while seed-grown plants usually take 6–8 years.
Climate
- Temperature: 20°C–35°C (ideal)
- Sunlight: Full sun, at least 6–8 hours daily
- Rainfall: Thrives during the monsoon but needs good drainage.
- Protect young plants from frost and strong winds.
Soil
Use fertile, well-drained soil with a pH of 6.0–7.5.
Ideal soil mix for pots:
- 40% garden soil
- 30% compost or well-rotted cow manure
- 20% river sand
- 10% cocopeat
Avoid heavy clay soil that stays waterlogged.
Pot Size
If growing in a container:
- Start with a 16–18 inch pot.
- Shift to a 24–30 inch (150–250 L) container as it grows.
- Large containers are essential because jackfruit develops a strong root system.
Growing in the ground is best for maximum yield.
Watering
- Water deeply 2–3 times per week during summer.
- During monsoon, water only when the top 2–3 inches of soil become dry.
- Never allow water to stand around the roots.
Fertilizer
Every 2 months
- 2–5 kg well-rotted cow manure or vermicompost (depending on plant size)
- 100–200 g neem cake
Every month
Apply an NPK fertilizer such as 19:19:19 or 10:26:26 according to the growth stage:
- Young plant: 15–20 g
- Mature plant: 50–100 g
Water after fertilizing.
Mulching
Add a 5–8 cm layer of dry leaves, straw, or coconut husk around the base.
- Conserves moisture
- Keeps roots cool
- Improves soil health
Keep mulch a few centimeters away from the trunk.
Pruning
- Remove weak, dead, or crossing branches.
- Maintain a height of 3–4 m for easier harvesting.
- Remove suckers growing below the graft union.
Flowering and Fruiting
- Flowers appear on the trunk and major branches.
- Do not remove early flowers.
- If many small fruits develop, thin some out so the remaining fruits grow larger.
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