Sweet Yams are exclusive crops available on FarmVille. Sweet Yams are available to farmers who have purchased a 7-day license with 25 FarmVille Cash as part of the Sweet Seeds for Haiti Event. Sweet Yams costs a farmer 25 coins (with plowing) and will give 3 experience for planting. The crop will grow in 6 hours and can be harvested to give a profit of 100 coins per crop. Sweet Yams never wither after 100% - Extra 100% Growth.