Level 51 farmers may plant a pineapple tree seed in a plant pot that has been filled with dirt. A gardening trowel is needed to plant the seed, then it must be watered. This action is all performed in the inventory or backpack section of the screen.
After 15 minutes or less, the pineapple seedling will become a pineapple sapling and can then be transferred to a Fruit tree patch. The nearby gardener will watch over your plant for 10 watermelons and optionally may be noted to save you space.
A pineapple tree sapling may take fourteen or more hours to mature. An Amulet of nature may be bound to the patch to provide progress on its growth. Once mature, the tree produces up to six pineapples at a time.
Planting the pineapple tree sapling gives 57 Farming experience. A healthy pineapple tree, when checked, provides 4,605 Farming experience. If the farmer does not watch the tree, then disease on the tree may be removed using secateurs. However, if left alone, the diseased tree will die.
Each pineapple, when picked from a tree in a fruit tree patch, gives 21.5 Farming experience. Once all 6 pineapples have been picked, the tree will slowly produce more pineapples until all 6 are available again. However, the pineapples may be picked anytime they show on the tree.
Picking pineapples from the jungle south of Brimhaven does not provide any Farming experience.
As with bananas in RuneScape, pineapples do not grow on trees, but rather grow as a small ground plant. Each plant can produce a single pineapple before dying. Strangely, the pineapple plants on Karamja accurately resemble a real-world pineapple plant but can produce multiple pineapples. This is most likely done for gameplay reasons.