According to the A. W. Kuchler U.S. potential natural vegetation types, East Rockhill Twp would have a dominant vegetation type of Appalachian Oak (104) with a dominant vegetation form of Eastern Hardwood Forest (25). The plant hardiness zone is 6b with an average annual extreme minimum air temperature of . The spring bloom typically begins by April 14 and fall color usually peaks by October 26.
According to the A. W. Kuchler U.S. potential natural vegetation types, East Rockhill Twp would have a dominant vegetation type of Appalachian Oak (104) with a dominant vegetation form of Eastern Hardwood Forest (25) The plant hardiness zone is 6b with an average annual extreme minimum air temperature of . The spring bloom typically begins by April. 14 and fall color usually peaks by October 26.