My winter garlic ( put in in october) I feed with "some"horse manure from March on.
Having free drainage, sandy soil, and putting in compost/ or leaf mould in soil before planting, and having enough nutrient in the soil than I put in every 14 days a light fertilizer, f i a bit manure or liquid manure. I keep the weeds away, very careful by hand and when the soil gets very dry ( when o when will that be?) I water, spec. when the leaves are developing.