Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Souderton can be used to figure out when it's the best time to plant balsam.

Planting Calendar for Balsam

Frost tolerance for balsam:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably not a good idea to plant balsam until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant balsam in Souderton 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 balsam and expect a good harvest is probably August. Any later than that and your balsam may not have a chance to really do well. You can get started a little bit earlier by starting your balsam indoors.

Last Frost Date

In Souderton the average date of last frost happens on April 15. It might get as low as -5°F during the coldest months of winter.

Keep in mind that USDA zone info for Souderton is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Souderton there is a last frost after April 15 so be sure to be ready to cover your balsam if you have a surprise late frost.

USDA Zone Info for Souderton

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 Souderton

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