Your thoughts on the use of a forest may differ from what the wild animals in it are thinking, and it is good to be aware of the problems. Animal browse is of two kinds. Critters may eat the buds, foliage, twigs, and leaders, which are accessible only on young trees. Or, they may gnaw the bark of both old and young trees. Foliage and leader browse may change the composition of a young forest, but the trees eventually outgrow the problem. Bark browse is a problem for many years more, though some trees are not affected because their bark is not appetizing.

My apple orchard has only recently begun to bear fruit, but I have learned many things by the “school of hard knocks” which I wish I had known before. Perhaps these remarks may save some time and trouble for others thinking of setting out apple trees in a cold and demanding climate. Northwestern Maine, where I live, appears on the climate map as Zone 3, and area frost pockets even get down to -45 degrees F.

Apple orchards suffer from a wide range of problems. The worst of all is not moose, deer, rabbits, voles, round-headed apple tree borers, sawfly, codling-moth, curculio, or scab. It is a bird, the ruffed grouse (Bonasa umbellus), known locally by the nickname partridge, which is the term I will use in this article. Partridge eat the buds of trees in the winter, and apple buds are among their favorite foods. They eat both leaf and flower buds, but leaf buds will regenerate the same year. Flower buds will not; they require two years in formation. If you lose all your flower buds, you will have no apples. Just one partridge is easily capable of “budding” an entire small orchard over the course of the winter.

Winter is the time when rabbits become a problem. Trees are a favorite food when other sources are hidden beneath the snow. Rabbits will eat twigs and small branches in their entirety. They will girdle larger stock, up to about an inch and a half in diameter, to obtain the nutritious inner bark, but this is fatal to the rest of the branch or tree. And they walk on top of the snow, which reaches depths of over four feet here, giving them access to much of the young forest as food.