Categories DavidVivid: blackening waxcap mushrooms Post author By David Post date 18 August 2016 Blackening waxap mushrooms emerge from the ground a vivid orange / yellowish colour, and then turn black (surprise). Look out for them growing in short grass – these were on the lawn of a local dentist. ← Two bags full: bee collecting pollen on thistle flower → Going green: algae growing on bullrush flowers