When to Plant Centaurea in Nashua, NH

Before planting it is a good idea to find your USDA Zone info to determine 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.

You can estimate when you can plant centaurea in Nashua by checking out the USDA zone info.


Planting Calendar for Centaurea

Frost tolerance for centaurea: Tolerant of some frost.
When to plant: Up to 5 weeks before last frost.

Since centaurea are one of those plants that can tolerate a little bit of cold weather you can plant them a little earlier in the year than other plants that might not handle the cold.

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

The earliest that you can plant centaurea in Nashua is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant centaurea and expect a good harvest is probably September. Any later than that and your centaurea may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your centaurea indoors.

Last Frost Date

The average date of last frost is April 15 in Nashua. In the coldest months of winter you should expect an average low temperature of -15°F.

Just be sure to remember that USDA zone info for Nashua may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Nashua it frosts late in the year after April 15 be ready to cover your centaurea if you have a late frost.

USDA Zone Info for Nashua

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 Nashua

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