Sometimes houseplant leaves dont unfurl properly its because they are on plants which are indoors not in nature! , The main reason a leaf may not unfurl is the lack of humidity. But there are Schwarzgrner Liguster 'Atrovirens' Ligustrum vulgare 'Atrovirens' Pflanzenschleuder Kirschlorbeer Dnger Mineralischer NPK Flssigdnger mit Stickstoff Silberkraft Kirschlorbeer pflanzen und pflegen Mein schner Garten