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.

By referring to the USDA zone info for Quakertown it's a good idea to determine when it's possible to plant saxifraga.

Planting Calendar for Saxifraga

Frost tolerance for saxifraga:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Saxifraga are barely cold tolerant which tells us that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant saxifraga in Quakertown is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant saxifraga and expect a good harvest is probably August. If you wait any later than that and your saxifraga may not have a chance to fully mature. Starting your saxifraga indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Quakertown. In the coldest months of winter you can expect an average low temperature of -5°F.

It's important to remember that USDA zone info for Quakertown is an average and the actual date of last frost is different every year. Half of the time in Quakertown you get surprised by a frost after April 15 so make sure that you are ready to protect your saxifraga if you have a late frost.

USDA Zone Info for Quakertown

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 Quakertown

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