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.

You will be able to figure out when to plant watercress by reviewing the USDA zone info for Danielson.

Planting Calendar for Watercress

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

Since watercress are barely cold tolerant you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant watercress in Danielson 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 watercress and expect a good harvest is probably August. You probably don't want to wait any later than that or else your watercress may not have a chance to fully mature. If you are starting your watercress 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 April 15 in Danielson. In the coldest months of winter you should expect an average low temperature of -10°F.

Just be sure to remember that USDA zone info for Danielson is just an average and the actual date of last frost will vary from year to year. Since half of the time in Danielson there is a last frost after April 15 be ready to cover your watercress in the event of one of those late frosts.

USDA Zone Info for Danielson

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Danielson

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