One of the first steps you take when you are estimating 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.

In Hummelstown you can determine when you can plant iresene by using the USDA zone info.

Planting Calendar for Iresene

Frost tolerance for iresene:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since iresene 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 iresene in Hummelstown 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 iresene and expect a good harvest is probably August. If you wait any later than that and your iresene may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your iresene indoors.

Last Frost Date

In Hummelstown the average date of last frost happens on April 15. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Hummelstown is just an average the actual date of last frost will vary from year to year. Since half of the time in Hummelstown you get a frost after April 15 be ready to protect your iresene if you have a late frost.

USDA Zone Info for Hummelstown

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 Hummelstown

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