I'm growing some eggplants in a raised garden bed. They have been fairly productive over the last month or two, but have recently begun growing small tubular "bits" instead of large green leaves. I don't know what to call them instead of "bits", add they're not leaves, but more like short stems.
This next picture really shows the mass of growth coming from the main stem at the bottom of the plants. These little tubular bits don't turn into normal leaves!
I have a feeling there is a nutrient deficiency, add they plants have stopped growing fruit and instead lots of this "stemmy" growth. I've attached a few pics that I hope will clarify things.
For your information, I live in Brisbane, Australia. So we're in winter at the moment, which is quite mild but with occasional light showers.