When to Plant Clover in Harrisburg, PA

Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Harrisburg you can figure out when it's possible to plant clover by referring to the USDA zone info.


Planting Calendar for Clover

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

You can plant clover just a tiny bit earlier in the year because they do ok in moderate cold.

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

The earliest that you can plant clover in Harrisburg 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 clover and expect a good harvest is probably August. If you wait any later than that and your clover may not have a chance to grow to maturity. If you are starting your clover 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 Harrisburg. It might get as low as 0°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Harrisburg is an average and the actual date of last frost is different every year. Half of the time in Harrisburg there is a last frost after April 15 so always be ready to cover your clover if you have a surprise late frost.

USDA Zone Info for Harrisburg

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 Harrisburg

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