The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for East Alton it's possible to estimate when it's a good idea to plant plectranthus.

Planting Calendar for Plectranthus

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

It's a bad idea to plant plectranthus until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant plectranthus in East Alton 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 plectranthus and expect a good harvest is probably August. Any later than that and your plectranthus may not have a chance to fully mature. Starting your plectranthus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in East Alton. You can expect an average low temperature of -10°F in the coldest months of winter.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for East Alton and it can change quite a bit from year to year. Since half of the time in East Alton it frosts late in the year after April 15 be ready to protect your plectranthus in the event of a surprise late frost.

USDA Zone Info for East Alton

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in East Alton

You may be interested in your other planting guides for East Alton.