The USDA Zone info is a great tool for gardeners to help us determine 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 Hummelstown you can determine when you can plant oriental poppies by referring to the USDA zone info.

Planting Calendar for Oriental poppies

Frost tolerance for oriental poppies:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Oriental poppies do well in mild cold which tells us that you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant oriental poppies in Hummelstown is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant oriental poppies and expect a good harvest is probably September. You probably don't want to wait any later than that or else your oriental poppies may not have a chance to fully mature. You can get started a little bit earlier by starting your oriental poppies indoors.

Last Frost Date

The average date of last frost is April 15 in Hummelstown. You can expect an average low temperature of 0°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Hummelstown and it can change quite a bit from year to year. Half of the time in Hummelstown it frosts late in the year after April 15 so be sure to be ready to cover your oriental poppies 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.