Some varietiesare resistant to apple scab, powdery mildew, cedar apple rust, or fireblight. These include Redfree, Prima, Priscilla, Jonafree, and Liberty. In warmer regions, red varieties may not color well. At least two varieties are needed to ensure adequate pollination. Fire blight is the biggest concern.
Asian pears are very crisp and juicy.
Plant at least two varieties of the same type to assure optimal nut size and production. Most Chinese and hybrid chestnuts are highly resistant to the chestnut blight fungus. Many people prefer the hybrid chestnut varieties, citing superior quality over the Chinese varieties. Only varieties that do not require pollination can be grown in North Carolina. No serious disease problems except nematodes.