One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. 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 Ossining should be looked at 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.

You can plant chrysanthemums just a tiny bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant chrysanthemums in Ossining is March. However, you really should wait until April 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. If you wait 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 has passed is on April 15 in Ossining. You can expect an average low temperature of -5°F in the coldest months of winter.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Ossining and it will vary from year to year. Half of the time in Ossining you get a frost after April 15 so make sure that you are prepared to cover your chrysanthemums if you have a surprise late frost.

USDA Zone Info for Ossining

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Ossining

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