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.

By checking out the USDA zone info for Harwood Heights you should be able to determine when it's a good idea to plant mustard greens.

Planting Calendar for Mustard greens

Frost tolerance for mustard greens:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant mustard greens a little earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant mustard greens in Harwood Heights is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant mustard greens and expect a good harvest is probably September. You probably don't want to wait any later than that or else your mustard greens may not have a chance to fully mature. You can get started a little bit earlier by starting your mustard greens indoors.

Last Frost Date

In Harwood Heights the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -15°F.

Remember that USDA zone info for Harwood Heights is an average and the actual date of last frost will vary from year to year. Since half of the time in Harwood Heights last frost occurs after April 15 be ready to protect your mustard greens if you have a late frost.

USDA Zone Info for Harwood Heights

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 Harwood Heights

You may be interested in your other planting guides for Harwood Heights.