what zone is billings planting
Jonine Smith said Billings has been rated a Zone 3-4 and may be a strong 4 now.. Chip Smith said he has a lot of Zone 5 material that won't grow here on a sustained basis. Jason Marble, of Billings Nursery and Landscaping, said he would not plant a Zone 5 tree. Zone 4 is defined as when the average low temperature of the year is from 20 below to 30 below Fahrenheit. Zone 5 is rated at 10 below through 20 below.