Not that garlic is all that hard to track but, in my garden, where I sometimes mix vegetables with flowers, it's good to have a system.
I was given 7 different kinds of garlic to plant this year. To keep track of what and where I planted them, I sunk old plastic flower pots and planted the garlic in them.
I also made stakes from popsicle sticks to keep track of varieties but Cousin George the raccoon had other plans for those sticks.
I'm only sure now of where the elephant garlic is blooming. With the help of pots, I can at least find the other garlics.
Humm, looks like a mole hole next to that pot...