One of the first steps you take when you are making a decision about 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.

By referring to the USDA zone info for Cohoes it's a good idea to figure out when to plant nierembergia.

Planting Calendar for Nierembergia

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

Nierembergia are not cold tolerant which means that you need to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant nierembergia in Cohoes 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. Any later than that and your nierembergia may not have a chance to fully mature. You can get started a few weeks earlier by starting your nierembergia indoors.

Last Frost Date

On average the last frost is on April 15 in Cohoes. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Cohoes is not always accurate the actual date of last frost changes from year to year. Since half of the time in Cohoes you get surprised by a frost after April 15 be ready to protect your nierembergia if you have one of those late frosts.

USDA Zone Info for Cohoes

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Cohoes

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