What plant hardiness zone is Grassy Butte

Grassy Butte is located at McKenzie County, North Dakota (ND), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Grassy Butte is 4a by the USDA scale.

Coldest zone's winter temperature is −30 … -25 °F.

Plants of 4a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 4a USDA.


Grassy Butte, North Dakota @ wikipedia.