When to Plant Ageratum in Inver Grove Heights, MN

One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. 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 Inver Grove Heights should be reffered to in order to estimate when to plant ageratum.

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Planting Calendar for Ageratum

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

It's not a good idea to plant ageratum until after the last frost because they are not cold tolerant.

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

The earliest that you can plant ageratum 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 ageratum and expect a good harvest is probably August. You probably don't want to wait any later than that or else your ageratum may not have a chance to grow to maturity. If you are starting your ageratum indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on May 15 in Inver Grove Heights. You can expect an average low temperature of -25°F in the coldest months of winter.

It's important to remember that USDA zone info for Inver Grove Heights is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Inver Grove Heights you get surprised by a frost after May 15 so just be sure to be ready to protect your ageratum if you have a 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.