When to Plant Saxifraga in Princeton, KY

One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of figuring out when it's a good idea to plant saxifraga is to use the USDA zone info for Princeton.


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.

Since saxifraga are barely cold tolerant you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant saxifraga
Possibly ok, but a risky time to plant saxifraga
Probably not a good time to plant saxifraga

The earliest that you can plant saxifraga in Princeton 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 really do well. If you are starting your saxifraga indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Princeton. In the coldest months of winter you should expect an average low temperature of -5°F.

Since the USDA zone info for Princeton is just an average the actual date of last frost changes from year to year. Half of the time in Princeton last frost occurs after April 15 so make sure that you are ready to protect your saxifraga if you have a surprise late frost.

USDA Zone Info for Princeton

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 Low0°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 Princeton

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