Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to determine when it's possible to plant oxalis by reviewing the USDA zone info for Sheffield.

Planting Calendar for Oxalis

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

Oxalis are not cold tolerant which tells us that you must wait until it warms up after the last frost before you can plant them.

The earliest that you can plant oxalis in Sheffield 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 oxalis and expect a good harvest is probably August. If you wait any later than that and your oxalis may not have a chance to fully mature. You can get started a few weeks earlier by starting your oxalis indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Sheffield. In the coldest months of winter you should expect an average low temperature of 5°F.

Remember that USDA zone info for Sheffield is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Sheffield you get a frost after April 15 so make sure that you are ready to protect your oxalis if you have a late frost.

USDA Zone Info for Sheffield

Here is the info for USDA Zone 7b.

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

Plants to Grow in Sheffield

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