One of the best tools that you have as gardeners to help us estimate 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.

A way of determining when it's the best time to plant fennel is to look at the USDA zone info for Oak Grove.

Planting Calendar for Fennel

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

Fennel can survive in pretty solid cold which tells us that you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant fennel in Oak Grove 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 fennel and expect a good harvest is probably September. You probably don't want to wait any later than that or else your fennel may not have a chance to really do well. Starting your fennel indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Oak Grove. You should expect an average low temperature of -10°F in the coldest months of winter.

It's important to remember that USDA zone info for Oak Grove is an average and the actual date of last frost changes from year to year. Half of the time in Oak Grove it frosts late in the year after April 15 so always be ready to protect your fennel if you have a late frost.

USDA Zone Info for Oak Grove

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 Oak Grove

You may be interested in your other planting guides for Oak Grove.