When can I plant Oxalis in Zone 1b

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

The earliest that you can plant oxalis in Zone 1b can be determined by using the USDA zone info.


Planting Calendar for Oxalis

Frost tolerance for oxalis: Not tolerant of frost.
When you should plant them: After the last frost.

It's probably a bad idea to plant oxalis until after all chance of frost has passed because they do not do well in cold weather.

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 Zone 1b is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant oxalis and expect a good harvest is probably July. Any later than that and your oxalis may not have a chance to grow to maturity. If you are starting your oxalis indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost has passed is on June 15 in Zone 1b. It might get as low as -55°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Zone 1b is not always accurate and our actual date of last frost can change quite a bit from year to year. Half of the time in Zone 1b last frost occurs after June 15 so be sure to be ready to protect your oxalis if we have one of those late frosts.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.