When can I plant Argyranthemum in Zone 5a

The USDA Zone info is a great tool for gardeners to help us estimate our gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

The USDA zone info for Zone 5a can be read to determine when you can plant argyranthemum.


Planting Calendar for Argyranthemum

Frost tolerance for argyranthemum: Not tolerant of frost.
When you should plant them: After the last frost.

Since argyranthemum require warm weather it is necessary to wait until after the last frost before you can plant them.

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

The earliest that you can plant argyranthemum in Zone 5a is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant argyranthemum and expect a good harvest is probably August. You probably don't want to wait any later than that or else your argyranthemum may not have a chance to really do well. Starting your argyranthemum indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Zone 5a. In the coldest months of winter we should expect an average low temperature of -20°F.

Since the USDA zone info for Zone 5a is just an average our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 5a we get surprised by a frost after April 15 be ready to cover your argyranthemum if we have a surprise late frost.

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.