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.

One way of determining when it's a good idea to plant oxalis is to consult the USDA zone info for Blaine.

Planting Calendar for Oxalis

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

It's a bad idea to plant oxalis until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant oxalis in Blaine 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. Any later than that and your oxalis may not have a chance to fully mature. If you are starting your oxalis indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Blaine. It might get as low as 10°F during the coldest months of winter.

Keep in mind that USDA zone info for Blaine is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Blaine you get a frost after March 15 so make sure that you are prepared to cover your oxalis in the event of one of those late frosts.

USDA Zone Info for Blaine

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Blaine

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