Winter Seeds are a type of Crafted seed. The crafting recipe is labeled "Wild Seeds (Wi)", but when crafted, the result is "Winter Seeds." Mature plants yield, at random, a Crocus, Crystal Fruit, Snow Yam, or Winter Root. Winter Seeds are the only seed that can grow outdoors during Winter.
Winter Seeds are one of the season-specific crafted wild seeds, along with Spring Seeds, Summer Seeds, and Fall Seeds that produce crops normally found as forage. Note that while Farming Skill normally increases the chance to grow a quality crop, for these (and other wild seeds) it is the Foraging Skill which increases the chance to recieve a quality crop. Crows do not attack crops grown from Summer Seeds, so the use of Scarecrows is unnecessary.
Because the forage is spawned as items rather than being "harvested", a mature plant grown from a Summer Seeds is different to other crops. Firstly, it will be affected by the Botanist profession perk. Secondly, it will not be considered "in the ground" on the last day of its growth and may leave untilled soil in its place, and any fertilizer used will be lost in this case.
Selling Winter Seeds is never profitable. A craft of Winter seeds yields 10 Winter Seeds worth data-sort-value="300">300g total, but the ingredients to craft it sell for data-sort-value="380">380g at normal quality.
Gallery
Wild Seeds from any season may appear similar to dead crops during Stage 2 of growth.