When to Plant Asparagus in Franklin, WI

The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to estimate when you can plant asparagus by looking at the USDA zone info for Franklin.


Planting Calendar for Asparagus

Frost tolerance for asparagus: Very tolerant of frost.
When to plant: Up to 7 weeks before last frost.

Asparagus can survive in cold weather which tells us that you can plant them much earlier in the year than other plants that might not handle the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant asparagus
Possibly ok, but a risky time to plant asparagus
Probably not a good time to plant asparagus

The earliest that you can plant asparagus in Franklin is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant asparagus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your asparagus may not have a chance to grow to maturity. You can get started a little bit earlier by starting your asparagus indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Franklin. In the coldest months of winter you should expect an average low temperature of -15°F.

It's important to remember that USDA zone info for Franklin is an average and the actual date of last frost will vary from year to year. Since half of the time in Franklin last frost occurs after April 15 be ready to cover your asparagus in the event of one of those late frosts.

USDA Zone Info for Franklin

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-15°F
Highest Expected Low-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Franklin

You may be interested in your other planting guides for Franklin.