The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to figure out when you can plant celosia by looking at the USDA zone info for Dayton.

Planting Calendar for Celosia

Frost tolerance for celosia:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since celosia require warm weather you must wait until after all chance of frost has passed before you can plant them.

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

The last month that you can plant celosia and expect a good harvest is probably September. Any later than that and your celosia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your celosia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Dayton. You should expect an average low temperature of 20°F in the coldest months of winter.

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

USDA Zone Info for Dayton

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Dayton

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