Last summer about mid July, I found some feral garlics growing in one sister's back yard (in zone 4), already with a good set of bulbils and standing about 3' tall to the top out from tucked back in under her grape vines.
I collected a handful of bulbs with the tops and their bulbils attached and set them out to dry on my curing screens. The bulbs were tiny, about the size of a quarter but with a full set of tiny cloves in a single ring. They seemed to cure out just fine. The cloves in the bulbs though tiny seemed to be nice and plump when I cracked them to plant this past fall.
These have been growing weedy and uncared for over about 25 years or so and just plain keep coming up all over her lawn and flower beds ever since. Her soil is pretty heavy and that seem to be no problem for this type. In fact it is almost invasive. It certainly is persistent, standing up to both competition from lawn grass and weed treatment.
This past fall I put out a pretty good sized bed of cloves and bulbils and some of them even sprouted, showing some tops before winter set in among the clove part of the bed anyway. I intend to also try to start some of the bulbils under lights later this winter.
Hardiness is apparently no problem nor is heavy soil either, it seems. Bulb size is a real issue however with all its very tiny and essentially useless cloves, unless that is just the result of not separating the cloves and not fertilizing or cutting the scapes. Bulbil size is from about rice to close to pea size and there were a lot of them in each scape. I did not see what the scape was like as I did not observe them early enough in the growth cycle, not even knowing they were there. The clove wrappers were very tight and the mature and well wrapped and separated cloves did not break apart very easily. Turned out to be a tough little nut to crack and just about the size of a normal round on top of it.
My question is how do I increase bulb size if that is possible?