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When to Plant Salpiglossis 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.

A common way of determining when it's the best time to plant salpiglossis is to refer to the USDA zone info for Inver Grove Heights.

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Planting Calendar for Salpiglossis

Frost tolerance for salpiglossis: Not tolerant of frost.
When to plant: After all chance of frost has passed.

Salpiglossis do not do well in cold weather which tells us that it's necessary to wait until it warms up after the last frost before you can plant them.

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A good time to plant salpiglossis
Possibly ok, but a risky time to plant salpiglossis
Probably not a good time to plant salpiglossis

The earliest that you can plant salpiglossis 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 salpiglossis and expect a good harvest is probably August. You probably don't want to wait any later than that or else your salpiglossis may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your salpiglossis indoors.

Last Frost Date

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

Since the USDA zone info for Inver Grove Heights is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Inver Grove Heights it frosts late in the year after May 15 so be sure to be ready to protect your salpiglossis in the event of one of those late frosts.

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.