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.

A common way of estimating when to plant rudbeckia is to examine the USDA zone info for Pottstown.

Planting Calendar for Rudbeckia

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

Rudbeckia do ok in mild cold which means that you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant rudbeckia in Pottstown 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 rudbeckia and expect a good harvest is probably September. If you wait any later than that and your rudbeckia may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your rudbeckia indoors.

Last Frost Date

The average date of last frost is April 15 in Pottstown. You should expect an average low temperature of -5°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Pottstown is an average and the actual date of last frost changes from year to year. Half of the time in Pottstown there is a last frost after April 15 so be sure to be ready to protect your rudbeckia in the event of a surprise late frost.

USDA Zone Info for Pottstown

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Pottstown

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