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.

A way of getting a good idea when it's a good idea to plant celosia is to look at the USDA zone info for Newburyport.

Planting Calendar for Celosia

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

It's probably a bad idea to plant celosia until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant celosia in Newburyport 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 celosia and expect a good harvest is probably August. If you wait any later than that and your celosia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your celosia indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Newburyport. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Newburyport is an average the actual date of last frost changes from year to year. Half of the time in Newburyport it frosts late in the year after April 15 so always be ready to cover your celosia in the event of one of those late frosts.

USDA Zone Info for Newburyport

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 Low	0°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 Newburyport

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