A fly trap seed is a Farming seed from which a fly trap can be grown at level 93 farming. It can be protected by paying a farmer 15 cadava berries. Harvesting grants an appropriate amount of Farming and Thievingexperience, based on the player's Farming and Thieving levels and if the fruit is retrieved without taking damage from the flower.
At level 99 Farming and Thieving, the experience per harvest is 1,152 Thieving experience and 50 Farming experience. Only one fruit is harvested per allotment.