When can I plant Asparagus in Zone 5b

One of the first steps we take when we are determining our gardening schedule is find our USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

The best time to plant asparagus in Zone 5b can be estimated by looking at the USDA zone info.


Planting Calendar for Asparagus

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

You can plant asparagus a lot earlier in the year because they are one of those plants that can tolerate quite a bit of cold weather.

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 Zone 5b 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. Any later than that and your asparagus may not have a chance to fully mature. If you are starting your asparagus indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Zone 5b. We can expect an average low temperature of -15°F in the coldest months of winter.

Keep in mind that USDA zone info for Zone 5b may not be accurate from year to year and our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 5b there is a last frost after April 15 be ready to cover your asparagus if we have a surprise late frost.

USDA Zone Info for Zone 5b

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 Zone 5b

You may be interested in our other planting guides for Zone 5b.