When to Plant Geranium in Collegeville, PA

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.

The earliest that you can plant geranium in Collegeville should be determined by checking out the USDA zone info.

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Planting Calendar for Geranium

Frost tolerance for geranium: Not tolerant of frost.
When to plant: After the last frost has passed.

It's probably a bad idea to plant geranium until after the last frost when the weather gets warmer because they do not do well in cold weather.

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

The earliest that you can plant geranium in Collegeville is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant geranium and expect a good harvest is probably August. If you wait any later than that and your geranium may not have a chance to really do well. Starting your geranium indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Collegeville. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Collegeville is not always accurate the actual date of last frost is different every year. Half of the time in Collegeville last frost occurs after April 15 so just be sure to be ready to cover your geranium if you have a late frost.

USDA Zone Info for Collegeville

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 Collegeville

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