When to Plant Galium in Swarthmore, PA

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

One way of determining when it's possible to plant galium is to examine the USDA zone info for Swarthmore.


Planting Calendar for Galium

Frost tolerance for galium: Tolerant of some frost.
When to plant: Up to 5 weeks before last frost.

Galium do ok in a little bit of cold which means that you can plant them a little bit earlier in the year than other frost tender plants.

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

The earliest that you can plant galium in Swarthmore is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant galium and expect a good harvest is probably September. If you wait any later than that and your galium may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your galium indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Swarthmore. You can expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Swarthmore is an average the actual date of last frost will vary from year to year. Half of the time in Swarthmore there is a last frost after April 15 so make sure that you are ready to protect your galium in the event of a surprise late frost.

USDA Zone Info for Swarthmore

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low0°F
Highest Expected Low5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Swarthmore

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