One of the first steps you take when you are getting a good idea your gardening schedule is find your 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.

You should be able to estimate when it's possible to plant napa cabbage by reviewing the USDA zone info for Hammond.

Planting Calendar for Napa cabbage

Frost tolerance for napa cabbage:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Napa cabbage are very cold tolerant which tells us that you can get them planted much earlier than other frost tender plants.

The earliest that you can plant napa cabbage in Hammond 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 napa cabbage and expect a good harvest is probably September. If you wait any later than that and your napa cabbage may not have a chance to really do well. You can get started a couple of weeks earlier by starting your napa cabbage indoors.

Last Frost Date

The average date of last frost is March 15 in Hammond. In the coldest months of winter you should expect an average low temperature of 15°F.

Since the USDA zone info for Hammond is just an average the actual date of last frost is different every year. Half of the time in Hammond last frost occurs after March 15 so make sure that you are ready to protect your napa cabbage in the event of a surprise late frost.

USDA Zone Info for Hammond

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Hammond

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