When to Plant Pentas in Northampton, 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.

One way of figuring out when you can plant pentas is to refer to the USDA zone info for Northampton.


Planting Calendar for Pentas

Frost tolerance for pentas: Not tolerant of frost.
When to plant: After all chance of frost has passed.

Since pentas require warm weather it's important to wait until after all chance of frost has passed before you can plant them.

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

The earliest that you can plant pentas in Northampton 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 pentas and expect a good harvest is probably August. Any later than that and your pentas may not have a chance to really do well. Starting your pentas 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 Northampton. In the coldest months of winter you should expect an average low temperature of -5°F.

Remember that USDA zone info for Northampton is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Northampton you get a frost after April 15 so just be sure to be ready to protect your pentas if you have one of those late frosts.

USDA Zone Info for Northampton

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 Northampton

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