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When to Plant Alternanthera in Cottage Grove, MN

One of the best tools that you have as gardeners to help us determine 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.

You can estimate when it's the best time to plant alternanthera in Cottage Grove by checking out the USDA zone info.


Planting Calendar for Alternanthera

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

It's not a good idea to plant alternanthera until after the last frost has passed because they do not do well in cold weather.

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

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

Last Frost Date

In Cottage Grove the average date of last frost happens on May 15. In the coldest months of winter you should expect an average low temperature of -25°F.

It's important to remember that USDA zone info for Cottage Grove is an average and the actual date of last frost will vary from year to year. Half of the time in Cottage Grove it frosts late in the year after May 15 so make sure that you are prepared to protect your alternanthera if you have one of those late frosts.

USDA Zone Info for Cottage Grove

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 Cottage Grove

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