my Zone 10A garlic, all in rectangular containers 24" length x 7.5" width, x 6.5" height, is sprouting well also, with some shoots up to about two inches. I had several garlic bulbs I intentionally kept in my refrigerator for a couple months, divided them into cloves, peeled them to avoid mold and decay, and kept the separated cloves open to the light at room temperature until they started sprouting. When the majority had tiny green shoots, I selected the best cloves (solid, no spongy or discolored parts) and planted them shallow with the very top of the clove showing as per advice from an internet container gardening site. I am really being careful not to overwater and it looks like all the cloves sprouted green shoots, but after a couple weeks I did have birds pull up maybe eight out of thirty or so of the newly sprouted cloves, so I replanted the missing ones with a more cloves, then added about an inch more soil over the top, and so far the birds have not raided again with the cloves now about two inches deep. Lesson learned: the internet advice for container gardening to plant the cloves with the tip showing is an invitation to be raided by birds. Solution: plant deeper, maybe two inches below the soil surface, even in shallow containers.

- Dave in California Zone 10A