When to Plant Saxifraga in Allentown, PA

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.

By checking out the USDA zone info for Allentown it's a good idea to figure out when you can 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.

You can plant saxifraga slightly earlier in the year because they do ok in moderate 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 Allentown 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. 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 Allentown. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Allentown may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Allentown last frost occurs after April 15 be ready to protect your saxifraga if you have a surprise late frost.

USDA Zone Info for Allentown

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 Allentown

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