Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when to plant leeks in Keene by referring to the USDA zone info.

Planting Calendar for Leeks

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

Leeks do well in cold which means that you can get them planted much earlier than other frost tender plants.

The earliest that you can plant leeks in Keene 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 leeks and expect a good harvest is probably September. Any later than that and your leeks may not have a chance to fully mature. Starting your leeks indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Keene. You can expect an average low temperature of -15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Keene may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Keene it frosts late in the year after April 15 be ready to cover your leeks if you have a late frost.

USDA Zone Info for Keene

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Keene

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