One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to figure out when it's the best time to plant argyranthemum by referring to the USDA zone info for Huron.

Planting Calendar for Argyranthemum

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

It's not a good idea to plant argyranthemum until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant argyranthemum in Huron is May. However, you really should wait until June 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. 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 May 15 in Huron. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Huron may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Huron you get surprised by a frost after May 15 be ready to protect your argyranthemum in the event of a late frost.

USDA Zone Info for Huron

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Huron

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