One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Watertown you can figure out when it's the best time to plant carnation by checking out 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.

You can plant carnation quite a bit earlier in the year because they are very cold tolerant.

The earliest that you can plant carnation in Watertown 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 carnation and expect a good harvest is probably August. Any later than that and your carnation may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your carnation indoors.

Last Frost Date

In Watertown the average date of last frost happens on May 15. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Watertown may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Watertown you get a frost after May 15 so always be ready to protect your carnation in the event of a late frost.

USDA Zone Info for Watertown

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Watertown

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