Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Isanti can be reviewed to estimate when you can plant chrysanthemums.

Planting Calendar for Chrysanthemums

Frost tolerance for chrysanthemums:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Chrysanthemums do well in a tiny bit of cold which means that you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant chrysanthemums in Isanti 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 chrysanthemums and expect a good harvest is probably August. Any later than that and your chrysanthemums may not have a chance to really do well. You can get started a few weeks earlier by starting your chrysanthemums indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Isanti. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Isanti is not always accurate the actual date of last frost is different every year. Half of the time in Isanti last frost occurs after May 15 so make sure that you are prepared to protect your chrysanthemums in the event of one of those late frosts.

USDA Zone Info for Isanti

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 Isanti

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