The USDA Zone info is a great tool for gardeners to help us estimate 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.

By looking at the USDA zone info for Tomah it's a good idea to figure out when to plant chinese chives.

Planting Calendar for Chinese chives

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

Chinese chives tend to make it in a little bit of cold which means that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant chinese chives in Tomah is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant chinese chives and expect a good harvest is probably August. You probably don't want to wait any later than that or else your chinese chives may not have a chance to grow to maturity. If you are starting your chinese chives indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Tomah. It might get as low as -25°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Tomah is not always accurate and the actual date of last frost changes from year to year. Half of the time in Tomah you get surprised by a frost after May 15 so be sure to be ready to cover your chinese chives in the event of a surprise late frost.

USDA Zone Info for Tomah

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 Tomah

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