Buy RS3 Evil turnip seed
The evil turnip seed is a members-only seed in RuneScape 3. It grows into an evil turnip, a vegetable used in Summoning to make evil turnip familiars. You need level 42 Farming to plant it.
The seed goes in the evil turnip patch on the west side of Draynor Manor. The patch is easy to use. It never gets disease, and it does not need water or compost. You only need a rake and a seed dibber. One seed fills the patch, and the turnip grows in about 4 minutes and 30 seconds. Planting gives 41 Farming experience, and harvesting gives 46 more. Each harvest gives one evil turnip.
Evil turnips are useful on their own too. You can carve one with a knife to make a carved evil turnip. You can also eat one raw. Each turnip has three bites, and each bite heals 641 life points, for 1,923 life points in total.
The seed is tradeable, stackable, and weighs nothing, so it is simple to store. It can also be disassembled for Organic parts, with a small chance of Living components. Its examine text says it grows into the root-vegetable of all evil.