Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Charlestown you can estimate when you can plant cilantro by checking out the USDA zone info.

Planting Calendar for Cilantro

Frost tolerance for cilantro:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since cilantro do ok in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant cilantro in Charlestown 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 cilantro and expect a good harvest is probably August. You probably don't want to wait any later than that or else your cilantro may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your cilantro indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Charlestown. In the coldest months of winter you can expect an average low temperature of -5°F.

Just be sure to remember that USDA zone info for Charlestown is just an average and the actual date of last frost will vary from year to year. Half of the time in Charlestown you get a frost after April 15 so always be ready to protect your cilantro in the event of a surprise late frost.

USDA Zone Info for Charlestown

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Charlestown

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