One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of determining when to plant spearmint is to use the USDA zone info for Henderson.

Planting Calendar for Spearmint

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

Spearmint can survive in quite a bit of cold which tells us that you can plant them earlier in the year than other frost tender plants.

The earliest that you can plant spearmint in Henderson 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 spearmint and expect a good harvest is probably September. Any later than that and your spearmint may not have a chance to grow to maturity. You can get started a little bit earlier by starting your spearmint indoors.

Last Frost Date

The average date of last frost is April 15 in Henderson. It might get as low as 5°F during the coldest months of winter.

Since the USDA zone info for Henderson may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Henderson there is a last frost after April 15 be ready to cover your spearmint in the event of a surprise late frost.

USDA Zone Info for Henderson

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Henderson

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