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

The USDA zone info for Ashtabula should be reffered to in order to figure out when it's the best time 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 can survive in some cold which means that you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant saxifraga in Ashtabula 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. Any later than that and your saxifraga may not have a chance to fully mature. You can get started a little bit earlier by starting your saxifraga indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Ashtabula. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Ashtabula may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Ashtabula you get surprised by a frost after April 15 be ready to cover your saxifraga if you have a surprise late frost.

USDA Zone Info for Ashtabula

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 Ashtabula

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