The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Kingston can be read to figure out when you can plant napa valley fern.

Planting Calendar for Napa Valley Fern

Frost tolerance for napa valley fern:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since napa valley fern are not cold tolerant it is necessary to wait until after the last frost before you can plant them.

The earliest that you can plant napa valley fern in Kingston is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant napa valley fern and expect a good harvest is probably August. If you wait any later than that and your napa valley fern may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your napa valley fern indoors.

Last Frost Date

In Kingston the average date of last frost happens on April 15. It might get as low as -5°F during the coldest months of winter.

It's important to remember that USDA zone info for Kingston may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Kingston you get surprised by a frost after April 15 so be sure to be ready to cover your napa valley fern in the event of a surprise late frost.

USDA Zone Info for Kingston

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 Kingston

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