young fir trees damaged by dreyfusia piceae balsam woolly aphids.

plant tree branch flower shrub leaf produce wildflower nature evergreen autumn blossom food twig wildlife herb frost fruit grass young fir trees damaged dreyfusia piceae balsam woolly aphids garden aphid needle disease infested nordmannianae parasite infestation destructive control pesticide macro bad brewster introduced awareness pest environmental invasive deforestation conservation science forest gardening killing protection disaster coniferous danger cones insect decoration bark beetles moths close-up closeup arachnid mites