When can I plant Arabis in Zone 5a

One of the best tools that we have as gardeners to help us determine our gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

By looking at the USDA zone info for Zone 5a you will be able to figure out when it's possible to plant arabis.


Planting Calendar for Arabis

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

You can plant arabis a lot earlier in the year because they are very cold tolerant.

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

The earliest that you can plant arabis in Zone 5a 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 arabis and expect a good harvest is probably September. Any later than that and your arabis may not have a chance to fully mature. Starting your arabis indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Zone 5a the average date of last frost happens on April 15. It might get as low as -20°F during the coldest months of winter.

Keep in mind that our actual date of last frost is not always accurate because it is based on the USDA zone info for Zone 5a and it is different every year. Since half of the time in Zone 5a we get a frost after April 15 be ready to protect your arabis if we have one of those late frosts.

USDA Zone Info for Zone 5a

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-20°F
Highest Expected Low-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Zone 5a

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