Dale's "frost flowers" explained..

In this post -

https://permies.com/t/43542/rocket-stoves/Dale-Rocket-Powered-Mass-Heater

Dale posted photos of some "frost flowers" -



Now research has come up with an explanition of how/why they form. -

Fungus shapes hair ice – Researchers identify fungus responsible for peculiar ice filaments that grow on dead wood

http://www.egu.eu/news/180/fungus-shapes-hair-ice-researchers-identify-fungus-responsible-for-peculiar-ice-filaments-that-grow-on-dead-wood/