Zone 3a

Average Low Winter Temperature

-40 to -35 Degrees F

Last Frost: Between May 15th and June 1st

First Frost: Between Sept 1st and Sept 15th

Zone 3a has cold winters and a somewhat short growing season. A wide variety of plants can be grown in this zone. Selecting cold hardy species and varieties or cultivars is recommended.

Start With a Soil Test:

This determines your specific plant nutrient and fertilizer needs.
Provides sustainable organic product recommendations for the healthiest plants possible.

How to Grow In My Zone

Purchase A Soil Test Kit

Growing Considerations:

Short growing season of approximately 120 – 150 days.
- Plan planting dates intentionally to be sure plants mature before the first fall frost.
Highly variable soils that include rocky, sandy, and high clay soils.
- Add organic matter and amend the soil specific to your site with the recommended fertilizers and amendments.
Consider the use of mulches, cold frames, hoophouses, or greenhouses to protect from the cold and using raised beds which warm more quickly and drain more readily in the Spring.
Start garden plants indoors.