When to Plant Oxalis in Jackson, WY

One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant oxalis in Jackson should be figured out by using the USDA zone info.


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 means that it's important to wait until it warms up after the last frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant oxalis
Possibly ok, but a risky time to plant oxalis
Probably not a good time to plant oxalis

The earliest that you can plant oxalis in Jackson is May. However, you really should wait until June 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. You probably don't want to wait any later than that or else your oxalis may not have a chance to fully mature. Starting your oxalis indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Jackson the average date of last frost happens on May 15. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Jackson may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Jackson there is a last frost after May 15 be ready to cover your oxalis if you have one of those late frosts.

USDA Zone Info for Jackson

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-25°F
Highest Expected Low-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Jackson

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