I noticed when there was more rain the eyes were opening, but I only had a couple varities ripening, The Colisanti Dark keeps a tight eye but the Colisanti #3 gets bigger and splits a bit, DiRedo will split open too with a bigger eye from the rain, but it is very solid inside so a bigger eye doesn't mean much as far as opening, just not much flavour to start with. None have have a big eye that I can put more than a pencil tip in though.