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 first chance to plant ageratum in Penn Yan can be figured out by using the USDA zone info.

Planting Calendar for Ageratum

Frost tolerance for ageratum:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since ageratum are not cold tolerant it is important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant ageratum in Penn Yan 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 ageratum and expect a good harvest is probably August. Any later than that and your ageratum may not have a chance to fully mature. Starting your ageratum indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Penn Yan. In the coldest months of winter you can expect an average low temperature of -10°F.

Just be sure to remember that USDA zone info for Penn Yan is an average and the actual date of last frost changes from year to year. Half of the time in Penn Yan you get a frost after April 15 so be sure to be ready to protect your ageratum if you have a late frost.

USDA Zone Info for Penn Yan

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 Penn Yan

You may be interested in your other planting guides for Penn Yan.