The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Glenolden you can determine when it's the best time to plant ageratum by reviewing 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 all chance of frost has passed before you can plant them.

The earliest that you can plant ageratum in Glenolden 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. You probably don't want to wait any later than that or else your ageratum may not have a chance to fully mature. You can get started a few weeks earlier by starting your ageratum indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Glenolden. You should expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Glenolden may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Glenolden last frost occurs after April 15 so always be ready to cover your ageratum in the event of a surprise late frost.

USDA Zone Info for Glenolden

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 Glenolden

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