Before planting it is a good idea to find your USDA Zone info to figure out 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.

The USDA zone info for Watertown should be reviewed to estimate when it's a good idea to plant elephant ears.

Planting Calendar for Elephant Ears

Frost tolerance for elephant ears:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant elephant ears until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant elephant ears in Watertown is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant elephant ears and expect a good harvest is probably August. You probably don't want to wait any later than that or else your elephant ears may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your elephant ears indoors.

Last Frost Date

The average date of last frost is May 15 in Watertown. In the coldest months of winter you should expect an average low temperature of -25°F.

Since the USDA zone info for Watertown is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Watertown last frost occurs after May 15 so make sure that you are prepared to protect your elephant ears 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.