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.

In Trenton you can estimate when it's a good idea to plant carnation by looking at the USDA zone info.

Planting Calendar for Carnation

Frost tolerance for carnation:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Carnation tend to make it in a bit of cold which tells us that you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant carnation in Trenton 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 carnation and expect a good harvest is probably September. You probably don't want to wait any later than that or else your carnation may not have a chance to grow to maturity. If you are starting your carnation indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Trenton the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -5°F.

Remember that USDA zone info for Trenton is not always accurate and the actual date of last frost is different every year. Half of the time in Trenton it frosts late in the year after April 15 so always be ready to cover your carnation if you have a late frost.

USDA Zone Info for Trenton

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 Trenton

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