The USDA Zone info is a great tool for gardeners to help us estimate 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.

You should be able to determine when it's the best time to plant sweet woodruff by looking at the USDA zone info for Doylestown.

Planting Calendar for Sweet Woodruff

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

Sweet Woodruff are one of those plants that can tolerate a little bit of cold weather which tells us that you can start planting them earlier than plants that are more sensitive to the cold.

The earliest that you can plant sweet woodruff in Doylestown 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 sweet woodruff and expect a good harvest is probably September. If you wait any later than that and your sweet woodruff may not have a chance to grow to maturity. You can get started a little bit earlier by starting your sweet woodruff indoors.

Last Frost Date

In Doylestown 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 Doylestown is an average the actual date of last frost is different every year. Half of the time in Doylestown it frosts late in the year after April 15 so make sure that you are prepared to cover your sweet woodruff in the event of a late frost.

USDA Zone Info for Doylestown

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 Doylestown

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