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 making a decision about when you can plant celosia is to use the USDA zone info for Roseland.

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 has passed because they do not do well in cold weather.

The earliest that you can plant celosia in Roseland 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. You probably don't want to wait any later than that or else your celosia may not have a chance to fully mature. You can get started a few weeks earlier by starting your celosia indoors.

Last Frost Date

The average date of last frost is April 15 in Roseland. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Roseland is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Roseland it frosts late in the year after April 15 be ready to cover your celosia in the event of a late frost.

USDA Zone Info for Roseland

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 Roseland

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