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.

The USDA zone info for Mount Vernon can be looked at to estimate when it's a good idea to plant chrysanthemum.

Planting Calendar for Chrysanthemum

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

Since chrysanthemum are not cold tolerant you really should wait until after the last frost before you can plant them.

The earliest that you can plant chrysanthemum in Mount Vernon 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 chrysanthemum and expect a good harvest is probably August. If you wait any later than that and your chrysanthemum may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your chrysanthemum indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Mount Vernon is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Mount Vernon last frost occurs after April 15 be ready to cover your chrysanthemum if you have a surprise late frost.

USDA Zone Info for Mount Vernon

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 Mount Vernon

You may be interested in your other planting guides for Mount Vernon.