Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Downingtown you can determine when you can plant streptocarpella by reviewing the USDA zone info.

Planting Calendar for Streptocarpella

Frost tolerance for streptocarpella:	Not tolerant of frost.
When to plant:	After the last frost.

You should not plant streptocarpella until after the last frost has passed because they do not do well in cold weather.

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

Last Frost Date

In Downingtown the average date of last frost happens on April 15. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Downingtown is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Downingtown you get surprised by a frost after April 15 be ready to protect your streptocarpella if you have a late frost.

USDA Zone Info for Downingtown

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 Downingtown

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