Before planting it is a good idea to find your USDA Zone info to figure out 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.

A common way of estimating when it's a good idea to plant oxalis is to check out the USDA zone info for Tarentum.

Planting Calendar for Oxalis

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

Oxalis require warm weather which tells us that it is necessary to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant oxalis in Tarentum 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 all chance of frost has passed is on April 15 in Tarentum. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Tarentum is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Tarentum you get surprised by a frost after April 15 be ready to cover your oxalis if you have a surprise late frost.

USDA Zone Info for Tarentum

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 Tarentum

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