Humboldt Hill's Hardiness Zone

Our records indicate the United States Department of Agriculture has given Humboldt Hill a growing zone designation of 9b. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Humboldt Hill's climate. If you are looking for plants suitable for growing in the Humboldt Hill area, head on over to our page on plants that grow well in Humboldt Hill, CA.

Small Greenhouse Kit

Compact greenhouse perfect for small spaces.

Rustic Iron Garden Trellis

Sturdy trellis for supporting climbing plants and vines.

Raised Garden Bed Kit

Easy-to-assemble raised garden bed for better soil control and drainage.

Raised Garden Planter

Elevated planter for easy access and better drainage.

Steel Hori Hori Weeding Knife

Versatile Japanese-style gardening knife for weeding and planting.

Understanding your growing zone is very important because it is a measure of the lowest temperature that a plant can survive, helping you to decide what plants would grow best in your particular climate. Since Humboldt Hill is in growing zone 9b this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Humboldt Hill's climate should be chosen with this in mind or plants should be moved inside to keep their core temperature in the right range if necessary.

USDA Growing Zone: 9b

Zip Codes: 95503

Longitude: -124.1987

Latitude: 40.7219

Lowest Avg Temperatures (F): 25 to 30