Care in the first three years

Young jackfruit trees need steady moisture without waterlogging, protection from frost, heat and cattle, and early shaping to one clean trunk.

Water and drainage. KAU calls jackfruit drought-sensitive and advises avoiding water stress, especially at flowering and fruit set, while keeping drainage good. ICRAF suggests raising the soil at the base of the plant and making channels so water runs away.

Frost and heat. KAU says plants should never be exposed to frost. In the north, cover a young sapling loosely with a jute or straw hood on nights when IMD warns of cold or ground frost, and remove it in the morning. In hot, dry places, light shade in the first summer helps (both practical guidance).

Shaping. KAU advises removing side branches that appear early so the trunk grows straight to about 1.5–2 m; fruit forms on this trunk. Later, ICRAF says hardly any pruning is needed beyond removing dead branches from inside the crown.

Weeds and mulch. KAU suggests spreading dried leaves under young trees to keep the soil moist, and growing pulses between trees before they bear. Keep the mulch a hand's width from the stem (practical guidance).

Pests and diseases. TNAU lists the fruit borer, the spittle bug and a fruit rot caused by the fungus Rhizopus as jackfruit problems. If you see holes in young fruit, frothy white spit on shoots or soft, dark, mouldy fruit, take a sample or clear photos to your local Krishi Vigyan Kendra (KVK) or horticulture office, and do not spray anything without their advice.

Patience. TNAU expects grafts to start fruiting from about the 5th year, so treat the first years as root-building years.