The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Piedmont you can determine when to plant saxifraga by using the USDA zone info.

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 do ok in moderate cold which tells us that you can start planting them slightly earlier than plants that are more sensitive to the cold.

The earliest that you can plant saxifraga in Piedmont 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. You probably don't want to wait any later than that or else your saxifraga may not have a chance to fully mature. You can get started a few weeks earlier by starting your saxifraga indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Piedmont. It might get as low as 5°F during the coldest months of winter.

Always keep in mind that USDA zone info for Piedmont is not always accurate and the actual date of last frost is different every year. Since half of the time in Piedmont last frost occurs after April 15 be ready to protect your saxifraga if you have one of those late frosts.

USDA Zone Info for Piedmont

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°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 10°F.

Plants to Grow in Piedmont

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