When can I plant Roses in Zone 4a

One of the best tools that we have as gardeners to help us estimate 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.

In Zone 4a you can estimate when to plant roses by reviewing the USDA zone info.


Planting Calendar for Roses

Frost tolerance for roses: Tolerant of some frost.
When you should plant them: Up to 5 weeks before last frost.

Roses do well in moderate cold which tells us that you can start planting them earlier than other plants that might not handle the cold.

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

The earliest that you can plant roses in Zone 4a is March. However, you really should wait until April if you don't want to take any chances.

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

Last Frost Date

On average the last frost has passed is on May 15 in Zone 4a. We should expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Zone 4a is an average our actual date of last frost can change quite a bit from year to year. Half of the time in Zone 4a there is a last frost after May 15 so make sure that you are prepared to cover your roses if we have one of those late frosts.

USDA Zone Info for Zone 4a

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-30°F
Highest Expected Low-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Zone 4a

You may be interested in our other planting guides for Zone 4a.