Silvanus, known also as the Treefather or Oak Father, presides over nature, specifically wild nature, in both its natural beauty and fierce savagery. He can be wild and unpredictable, much like nature itself, and is wrathful towards those who threaten wild places. He is the patron of Druids.
The Emerald Grove is a druid grove dedicated to the Treefather.
A disease of the flower must not reach the root. Pluck the petals. Sever the branch if you must. But cut out the rot before it infects the whole of the wood.