When to Plant Salpiglossis in Champaign, IL

Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant salpiglossis in Champaign should be determined by reviewing the USDA zone info.

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Planting Calendar for Salpiglossis

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

You can not plant salpiglossis until after the last frost because they are not cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
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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 Champaign 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 salpiglossis and expect a good harvest is probably August. If you wait any later than that and your salpiglossis may not have a chance to really do well. Starting your salpiglossis indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Champaign. It might get as low as -15°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost is an average because it is based on the USDA zone info for Champaign and it can change quite a bit from year to year. Since half of the time in Champaign it frosts late in the year after April 15 be ready to protect your salpiglossis if you have a late frost.

USDA Zone Info for Champaign

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 Champaign

You may be interested in your other planting guides for Champaign.