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

In Zone 7b you can estimate when you can plant saxifraga by looking at 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 are barely cold tolerant which means that you can plant them slightly earlier than more sensitive plants.

The earliest that you can plant saxifraga in Zone 7b 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 really do well. You can get started a few weeks earlier by starting your saxifraga indoors.

Last Frost Date

The average date of last frost is April 15 in Zone 7b. You can expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Zone 7b is not always accurate the actual date of last frost is different every year. Half of the time in Zone 7b last frost occurs after April 15 so be sure to be ready to cover your saxifraga if you have one of those late frosts.

USDA Zone Info for Zone 7b

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 Zone 7b

You may be interested in your other planting guides for Zone 7b.