tree trunk covered in bacterial crown galls (agrobacterium radiobacter) along hickling recreational trail

tree plant branch trunk leaf woodland deciduous autumn flower forest grove nature wood sunlight spring maple park covered bacterial crown galls agrobacterium radiobacter hickling recreational trail background bacteria bark beautiful beauty blue botany bright brown canada color colorful conservation environment flora foliage gall green hiking landscape leaves light natural ontario outdoor pine scenery season shadow sky sunny tourism travel view white wild wilderness