One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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 USDA zone info for Greendale can be used to estimate when to plant perilla.

Planting Calendar for Perilla

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

Perilla require warm weather which tells us that you must wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant perilla in Greendale 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 perilla and expect a good harvest is probably August. Any later than that and your perilla may not have a chance to grow to maturity. If you are starting your perilla indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Greendale the average date of last frost happens on April 15. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Greendale is an average the actual date of last frost will vary from year to year. Since half of the time in Greendale last frost occurs after April 15 be ready to protect your perilla if you have a surprise late frost.

USDA Zone Info for Greendale

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Greendale

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