The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of getting a good idea when it's a good idea to plant zinnia is to use the USDA zone info for Two Rivers.

Planting Calendar for Zinnia

Frost tolerance for zinnia:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's a bad idea to plant zinnia until after the last frost has passed because they require warm weather.

The earliest that you can plant zinnia in Two Rivers is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant zinnia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your zinnia may not have a chance to really do well. If you are starting your zinnia indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for Two Rivers may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Two Rivers there is a last frost after April 15 so make sure that you are prepared to protect your zinnia in the event of a surprise late frost.

USDA Zone Info for Two Rivers

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Two Rivers

You may be interested in your other planting guides for Two Rivers.