Garlic is a pungent herb, a strong flavouring for food and a talisman against some evils. It’s generally shown as a “bulb”, which fact is explicitly blazoned; garlic bulbs are found in the canting arms (German Knoblauch) of Knobloch, 1605 [Siebmacher 210]. The bulb’s point is to chief by Society default.
Period armory also gives us the “garlic plant”, which shows the stalk as well as the bulb; it’s found in the arms of Luchau, c.1370 [Gelre 42]. See also fruit.
Myfanwy Crisiant ferch Dafydd bears: Gyronny purpure and Or, a bulb of garlic argent.
Desdemona Polizziano bears: Purpure, a garlic bulb, a chief dovetailed argent.