Boise Idaho Growing Zone

Boise, Idaho, is located in the Pacific Northwest region of the United States. As such, it has a unique climate that can be tricky for gardeners and farmers to navigate. The Boise area is part of the USDA Plant Hardiness Zone 6a, which is characterized by cold winters and hot summers. This means that the area can support a wide variety of plants, but the gardening season is relatively short.

The Boise area is characterized by hot, dry summers that can reach temperatures of up to 100 degrees Fahrenheit. Winters are relatively mild, although temperatures can dip below freezing. The area receives an average of 13 inches of rain and 28 inches of snow annually.

The USDA Plant Hardiness Zone 6a is divided into two subzones: 6a and 6b. The 6a zone encompasses the Boise area and is characterized by an average annual minimum temperature of -10 to -5 degrees Fahrenheit. The 6b zone is located to the east of Boise and is characterized by an average annual minimum temperature of -5 to 0 degrees Fahrenheit.

The Boise area is best suited for plants that are hardy to zone 6a. This includes a wide variety of trees, shrubs, and perennials. Common trees that do well in the Boise area include maple, ash, birch, cherry, and oak. Common shrubs include lilac, viburnum, and rhododendron. Perennials that thrive in the Boise area include daylilies, coneflowers, and daisies.

When planting in the Boise area, it is important to pay attention to the specific needs of each plant. Some plants may require more water or sunlight than others, so it is important to research the specific needs of each plant before planting. Additionally, it is important to mulch around plants to help retain moisture and protect them from extreme temperatures.

Resources

USDA Plant Hardiness Zone Map
Gardening Know How: Planting Zones for Idaho
Garden Guides: Boise Idaho Plant Zone
The Spruce: Plant Hardiness Zones in Idaho