One of the first steps you take when you are determining your gardening schedule is find your 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.

A way of determining when it's the best time to plant hardy asters is to use the USDA zone info for Glen Rock.

Planting Calendar for Hardy Asters

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

Since hardy asters are barely cold tolerant you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant hardy asters in Glen Rock 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 hardy asters and expect a good harvest is probably August. You probably don't want to wait any later than that or else your hardy asters may not have a chance to really do well. Starting your hardy asters indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Glen Rock. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Glen Rock is not always accurate the actual date of last frost is different every year. Since half of the time in Glen Rock last frost occurs after April 15 be ready to cover your hardy asters in the event of a surprise late frost.

USDA Zone Info for Glen Rock

Here is the info for USDA Zone 7a.

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

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

Plants to Grow in Glen Rock

You may be interested in your other planting guides for Glen Rock.