There is still time to plant Garlic (Ohio Is In Zone 6) See the zone map for the US at the heading of this page. If you have doubts, enter your zip code at the bottom on the heardiness zone finder. I snagged this article from The Columbus Community Gardner a local Columbus Gardening Blog.
By Nancy O’Donnell * Albany Times Union
Not quite ready to throw in the gardening towel for the season? Try
your hand at growing garlic. The optimum time to plant garlic is just
around the corner, so there's still time to get prepared.
To
grow your own, plant anytime from mid-October up until about five weeks
before the ground freezes. Planting within the next few weeks takes
advantage of the cooler soil and air temperatures, which are a catalyst
for root development.
Once
the ground freezes, the bulb will go dormant until spring, securely
anchored in the soil throughout the winter. Come spring, the roots will
be in place, ready and waiting to absorb nutrients and begin the
growing season.
Begin
preparing your soil by incorporating lots of organic matter -- compost,
grass clippings and shredded leaves -- into the garden.
Garlic loves organically rich soil with excellent drainage. Provide full sun and a pH around 6.5 to 7.
When
you buy garlic, it comes as a complete bulb. Separate it into
individual cloves. Make a furrow about 2 inches deep, then plant cloves
pointed end up and at least 6 to 8 inches apart.
Once
covered, tamp and keep watered well until the ground freezes. Apply a
2-inch layer of mulch and leave until you harvest it next summer.