Castanea dentata Up to 100'. Once common in the eastern US. Important food source for people and wildlife. Not immune to blight but likely to thrive 10-30 years. Fast growing and precocious. Z4.
Castanea 40-60' x 30-40'. Hybrid crosses of mixed parentage. Parent trees show excellent blight resistance. Begins flowering at 3-5 years. Great flavor, high annual nut production. Z4.
Castanea crenata Vigorous, precocious and high yielding. Can cross-pollinate with Chinese, American and hybrid chestnuts. Moderate to high blight resistance. Z4.
Castanea pumila 15-30' x 10-20'. Once an important food for indigenous peoples. Somewhat resistant to chestnut blight. Native to much of central/eastern U.S. Z4.