When to Plant Creeping Zinnia in Collegeville, PA

One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Collegeville you can determine when it's the best time to plant creeping zinnia by using the USDA zone info.


Planting Calendar for Creeping Zinnia

Frost tolerance for creeping zinnia: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

Creeping Zinnia tend to make it in very little cold which means that you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

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

The earliest that you can plant creeping zinnia in Collegeville 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 creeping zinnia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your creeping zinnia may not have a chance to fully mature. Starting your creeping zinnia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Collegeville the average date of last frost happens on April 15. You can expect an average low temperature of 0°F in the coldest months of winter.

Remember that USDA zone info for Collegeville is just an average and the actual date of last frost is different every year. Since half of the time in Collegeville it frosts late in the year after April 15 be ready to protect your creeping zinnia if you have one of those late frosts.

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.