Feijoa. I have planted a hedge of 93 feijoa seedlings. They all survived frostwise but there is big differences in growth. Some are very strong growing, a lot of others normally and some very poorly. I suppose fruit size and quality is not linked to plant vigour but i don't know really. The healthiest vigourous ones will be the ones that will best fill out the hedge anyway. Maybe next year there might be the first flower somewhere. I doubt they will flower this year. Here is an example of a rather less well performing individual. And even worse.