4-8
In Europe, it is usually foraged from parks and forests in early spring. It starts growing and flowering before deciduous trees get their leaves.
Wild garlic is pretty similar to the following poisonous plants: Lily of the Valley, Autumn Crocus, Cuckoo Pint, Indian Poke, White Hellebore
Rubbing the leaves between the hands and smell is helping but be aware that the garlic smell stays on the hands and might not help by identifying subsequent plants.
Seeds need cold stratification.