You did nothing wrong, Yan. In my opinion, you planted them at the right time. They have simply germinated. Depending on how cold y'all get up in MD, the garlic could continue to grow all winter long, though growth will slow considerably when winter sets in. If you have a supply of leaves (I use oak), cover your plants before the first heavy frost/hard freeze with 4-6" of leaves. That will give the plants some insulation during the coldest months.
