The biggest of all garlic growing mistakes is planting cloves too near the soil surface. This single error causes more crop failures than any other problem new growers face. Cloves planted too high get pushed out by frost or never grow strong roots at all.
I watched my neighbor lose her first garlic crop this way just last winter. She tucked cloves barely an inch under the soil like she was planting tulip bulbs. By spring, frost heaving had pushed most of them right out of the ground completely. The few that stayed in place rotted from the cold exposure.
Planting too high fails for two big reasons that explain why garlic fails so often for beginners. First, cloves need deep soil contact to grow strong roots before winter hits hard. Roots anchor the bulbs in place through freeze-thaw cycles that try to push them up. Second, deeper planting protects cloves from the worst cold damage at the surface.
Common garlic errors like this happen because people think of garlic like other bulbs they plant each year. Tulips and daffodils sit just a few inches down and do fine through winter. But garlic needs to spend all winter in the ground and survive much harsher conditions over many months. Different plants need different treatment.
Extension experts say to plant garlic 2-4 inches deep based on your climate zone. Colder areas in zones 5 and below need the deeper end of that range for best results. Warmer zones can get by with 2 inches since frost heaving causes less trouble where winters stay mild.
The most frequent beginner garlic problems stem from not knowing how to measure that depth. Count from the soil surface down to the top of the clove, not the bottom. A clove that measures 2 inches from bottom to tip needs 4 inches total depth if you want the top sitting 2 inches below the surface.
Dig your planting holes or trenches before you start placing cloves in the ground. Set each clove point up with the flat root end facing down into the soil. Space them 4-6 inches apart to give bulbs room to grow without crowding each other. Cover with loose soil and press down to remove air pockets.
Add mulch after planting to hold moisture and prevent frost heaving even more. This extra step protects your investment of time and seed stock through winter. Next spring you will see strong shoots push through instead of rotted cloves and empty holes where your garlic was supposed to grow.
Read the full article: Growing Garlic Successfully in Any Climate
