When to Plant Nierembergia in State College, PA

One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

By using the USDA zone info for State College you should be able to estimate when it's a good idea to plant nierembergia.


Planting Calendar for Nierembergia

Frost tolerance for nierembergia: Not tolerant of frost.
When to plant: After the last frost.

Nierembergia are not cold tolerant which tells us that it's important to wait until it warms up after the last frost before you can plant them.

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

The earliest that you can plant nierembergia in State College 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 nierembergia and expect a good harvest is probably August. If you wait any later than that and your nierembergia may not have a chance to fully mature. Starting your nierembergia indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In State College the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -5°F.

Remember that USDA zone info for State College is just an average and the actual date of last frost is different every year. Since half of the time in State College you get surprised by a frost after April 15 be ready to cover your nierembergia if you have one of those late frosts.

USDA Zone Info for State College

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 State College

You may be interested in your other planting guides for State College.