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

In Cape Girardeau you can figure out when you can plant salpiglossis by looking at the USDA zone info.

Planting Calendar for Salpiglossis

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

Salpiglossis are not cold tolerant which means that it's necessary to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant salpiglossis in Cape Girardeau 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. 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

On average the last frost when the weather gets warmer is on April 15 in Cape Girardeau. It might get as low as -5°F during the coldest months of winter.

It's important to remember that the actual date of last frost is an average because it is based on the USDA zone info for Cape Girardeau and it is different every year. Since half of the time in Cape Girardeau you get surprised by a frost after April 15 be ready to cover your salpiglossis if you have a late frost.

USDA Zone Info for Cape Girardeau

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Cape Girardeau

You may be interested in your other planting guides for Cape Girardeau.