One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Collinsville you can figure out when you can plant potatos by looking at the USDA zone info.

Planting Calendar for Potatos

Frost tolerance for potatos:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant potatos a lot earlier in the year because they are very cold tolerant.

The earliest that you can plant potatos in Collinsville is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant potatos and expect a good harvest is probably September. If you wait any later than that and your potatos may not have a chance to really do well. You can get started a couple of weeks earlier by starting your potatos indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Collinsville. It might get as low as 0°F during the coldest months of winter.

Always keep in mind that USDA zone info for Collinsville is not always accurate and the actual date of last frost changes from year to year. Half of the time in Collinsville it frosts late in the year after April 15 so be sure to be ready to cover your potatos if you have a late frost.

USDA Zone Info for Collinsville

Here is the info for USDA Zone 7a.

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

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

Plants to Grow in Collinsville

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