A Crystal tree can be grown with the Farming skill. Players with at least level 74 Farming may plant a crystal sapling in the Prifddinas crystal tree patch. The crystal tree cannot become diseased.
Crystal trees are grown by first planting a crystal acorn in a filled plant pot, which will turn into a crystal tree sapling after being watered and allowed to grow. The crystal tree sapling is then planted in the crystal tree patch using a spade. Only one crystal tree patch exists and is located in the north-east section of Prifddinas.
An amulet of nature can be bound to the patch to provide players with information about its growing progress.
Once fully grown, the tree can be harvested with an axe. Unlike other harvested trees, crystal trees are harvested and removed at the same time; no stump remains to be cleared and the patch is immediately empty once the tree is harvested. Harvesting crystal trees grants 8–16 crystal shards, depending on the type of compost used, with ultracompost typically yielding 14-16 crystal shards. Magic secateurs, and by extension the farming cape, have no effect. Players can also receive bird nests after chopping the tree down.
As the tree yields shards upon harvest and crystal acorns may be obtained by exchanging tradeable crystal seeds, harvesting the crystal tree may be used as a passive method of obtaining crystal shards for charging crystal equipment. As the shards can also be used to make the tradeable divine potions, it may alternatively be done as a recurring money making method.
Crystal shards are untradeable, but can be used to make Divine potions, which are tradeable. If the tree is grown by converting a crystal weapon seed into a crystal acorn and ultracompost is used, and the shards are used to make divine super combat potions, the net gold for growing the tree comes out to -142,421.5. If making divine bastion potions, the net gold is -217,159.
- ↑ Yield improves with higher tiers of Compost.
- ↑ Only dropped by Grown version.
- ↑ Jagex. Mod Ash's Twitter account. 6 August 2019. (Archived from the original on 28 May 2020.) Mod Ash: "[Does using magic secateurs increase the amount of crystal shards from harvesting crystal tree?] No, the secateurs don't help with that. Compost does."