The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant decorative kale in Watertown should be determined by referring to the USDA zone info.

Planting Calendar for Decorative Kale

Frost tolerance for decorative kale:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Decorative Kale do well in mild cold which tells us that you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant decorative kale 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 decorative kale and expect a good harvest is probably August. You probably don't want to wait any later than that or else your decorative kale may not have a chance to really do well. You can get started a little bit earlier by starting your decorative kale indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Watertown. It might get as low as -30°F during the coldest months of winter.

It's important to remember that USDA zone info for Watertown may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Watertown it frosts late in the year after May 15 be ready to protect your decorative kale in the event of a surprise 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.