One of the first steps you take when you are estimating 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.

By looking at the USDA zone info for Fort Oglethorpe it's possible to figure out when it's the best time to plant watercress.

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 do ok in moderate cold you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant watercress in Fort Oglethorpe 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. Any later than that and your watercress may not have a chance to grow to maturity. 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

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

Since the USDA zone info for Fort Oglethorpe is just an average the actual date of last frost is different every year. Since half of the time in Fort Oglethorpe there is a last frost after April 15 be ready to protect your watercress in the event of one of those late frosts.

USDA Zone Info for Fort Oglethorpe

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 Fort Oglethorpe

You may be interested in your other planting guides for Fort Oglethorpe.