One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

The USDA zone info for Concordia should be reffered to in order to figure out when to plant leeks.

Planting Calendar for Leeks

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

Leeks tend to make it in pretty solid cold which means that you can plant them quite a bit earlier in the year than other frost tender plants.

The earliest that you can plant leeks in Concordia 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. If you wait any later than that and your leeks may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your leeks indoors.

Last Frost Date

The average date of last frost is April 15 in Concordia. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Concordia is just an average the actual date of last frost will vary from year to year. Since half of the time in Concordia there is a last frost after April 15 be ready to cover your leeks if you have a late frost.

USDA Zone Info for Concordia

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 Concordia

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