Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of determining when it's the best time to plant argyranthemum is to refer to the USDA zone info for Alma.

Planting Calendar for Argyranthemum

Frost tolerance for argyranthemum:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You can not plant argyranthemum until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant argyranthemum in Alma 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 grow to maturity. You can get started a few weeks earlier by starting your argyranthemum indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Alma. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Alma is not always accurate the actual date of last frost is different every year. Since half of the time in Alma last frost occurs after April 15 be ready to protect your argyranthemum in the event of a surprise late frost.

USDA Zone Info for Alma

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Alma

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