Triticale was a grain seed released on July 15th, 2010 —and plantable until August 12th, 2010 — as part of the Swiss Alps Event. It was the first limited edition Heirloom Crop, a seed of which requires mastery of another crop before it can be planted. Indeed, it was the first crop of any kind to require mastery of two crops prior to player access. Rye and Wheat needed to be mastered before triticale was unlocked.