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.

By referring to the USDA zone info for Watertown you should be able to estimate when it's possible to plant artichokes.

Planting Calendar for Artichokes

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

Artichokes do well in moderate cold which tells us that you can plant them earlier than more sensitive plants.

The earliest that you can plant artichokes 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 artichokes and expect a good harvest is probably August. Any later than that and your artichokes may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your artichokes indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Watertown. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Watertown is just an average the actual date of last frost changes from year to year. Half of the time in Watertown there is a last frost after May 15 so just be sure to be ready to cover your artichokes in the event of one of those late frosts.

USDA Zone Info for Watertown

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

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

Plants to Grow in Watertown

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