The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Slinger you should be able to figure out when it's the best time to plant oxalis.

Planting Calendar for Oxalis

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

You should not plant oxalis until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant oxalis in Slinger 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 grow to maturity. You can get started a little bit earlier by starting your oxalis indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Slinger. It might get as low as -20°F during the coldest months of winter.

Since the USDA zone info for Slinger is not always accurate the actual date of last frost changes from year to year. Half of the time in Slinger last frost occurs after April 15 so just be sure to be ready to protect your oxalis in the event of one of those late frosts.

USDA Zone Info for Slinger

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Slinger

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