When to Plant Zinnia in Inver Grove Heights, MN

One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant zinnia in Inver Grove Heights should be estimated by referring to the USDA zone info.

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Planting Calendar for Zinnia

Frost tolerance for zinnia: Not tolerant of frost.
When to plant: After the last frost when the weather gets warmer.

Zinnia require warm weather which means that you must wait until it warms up after the last frost when the weather gets warmer before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant zinnia
Possibly ok, but a risky time to plant zinnia
Probably not a good time to plant zinnia

The earliest that you can plant zinnia in Inver Grove Heights 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 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 May 15 in Inver Grove Heights. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Inver Grove Heights is not always accurate the actual date of last frost changes from year to year. Half of the time in Inver Grove Heights you get surprised by a frost after May 15 so make sure that you are ready to cover your zinnia in the event of a surprise late frost.

USDA Zone Info for Inver Grove Heights

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 Inver Grove Heights

You may be interested in your other planting guides for Inver Grove Heights.