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

A way of determining when it's the best time to plant chrysanthemum is to refer to the USDA zone info for Manhattan.

Planting Calendar for Chrysanthemum

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

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

The earliest that you can plant chrysanthemum in Manhattan 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 really do well. You can get started a few weeks earlier by starting your chrysanthemum indoors.

Last Frost Date

The average date of last frost is April 15 in Manhattan. In the coldest months of winter you can expect an average low temperature of -10°F.

Remember that USDA zone info for Manhattan is an average and the actual date of last frost changes from year to year. Half of the time in Manhattan you get a frost after April 15 so always be ready to cover your chrysanthemum if you have a late frost.

USDA Zone Info for Manhattan

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 Manhattan

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