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

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