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.

A common way of getting a good idea when you can plant mimulus is to check out the USDA zone info for Massena.

Planting Calendar for Mimulus

Frost tolerance for mimulus:	Not tolerant of frost.
When to plant:	After the last frost.

Since mimulus do not do well in cold weather it's important to wait until after the last frost has passed before you can plant them.

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

Last Frost Date

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

Since the USDA zone info for Massena is just an average the actual date of last frost changes from year to year. Half of the time in Massena you get surprised by a frost after May 15 so make sure that you are prepared to protect your mimulus if you have one of those late frosts.

USDA Zone Info for Massena

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 Massena

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