Trees Arbres 420 Diseases and pests 408 Forests and forestry 312 Growth 152 Maladies et fléaux 147 Shrubs 139 more ... Forest insects 128 Forest ecology 97 Wood 95 Plants 89 Timber 86 Wounds and injuries 84 Forêts 70 Breeding 64 Seedlings 58 Seeds 56 Forest management 54 Control 51 Forest health 50 Forest genetics 47 History 43 Identification 43 Tree planting 42 Forest nurseries 41 Woody plants 39 Landscape gardening 38 Effect of air pollution on 37 Insect pests 37 Measurement 37 less ...