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

In Manchester you can determine when it's possible to plant argyranthemum by checking out the USDA zone info.

Planting Calendar for Argyranthemum

Frost tolerance for argyranthemum:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since argyranthemum do not do well in cold weather it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant argyranthemum in Manchester 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 few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Manchester. You can expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Manchester is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Manchester it frosts late in the year after April 15 so always be ready to cover your argyranthemum if you have a surprise late frost.

USDA Zone Info for Manchester

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 Manchester

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