Nurses for the Oak.
Here again, a good deal will depend upon the object of the planter, the nature of the soil, and the exact arrangements which are made at the time of planting; for it might be quite proper to plant a species of Tree in one place, while, owing to a difference in the staple or the condition of the soil, it would be just the reverse in another.
The remarks which I shall have to make on this subject have, in some degree, been anticipated by the observations which I have already made, respecting the Skellingthorpe Plantation, but a more particular reference to a few well-known kinds, may not be amiss.
I begin with the Larch, which, from its great value to Farmers and others, is fairly entitled to precedence.
The Larch is found, in greater or smaller proportions, in most places where Plantations are made; and it is entirely the planter’s fault, if he be not well acquainted with its character, as a nurse for Oak. I say this, because it has been so extensively tested, and its habits are so well known, that no one, having the slightest wish to become acquainted with it, can have failed for want of opportunity.
I have very often seen the Larch where it has proved an exceedingly bad nurse; where, in fact, instead of nursing the Oaks, it has destroyed them: but this has, of course, arisen from “mismanagement,” and might have been avoided. When good, stiff, healthy Oak Plants are put in with Larch only, or but with very few of any other sort, the Larch ought not, in the first place, to be put too near—the exact distance can only be determined relatively to that of the Oaks—secondly: an advantage should be given to the Oaks, if possible, at the start; either by assigning them a portion of the soil from the land intended for the Larch, or in some other way; after which, if the latter are constantly watched, they will approve themselves very suitable and valuable nurses; but if they are allowed, as they too generally are, to take the lead of the Oak, they will plentifully avail themselves of the licence, to the serious and, perhaps, irreparable injury of that plant.
For large Plantations, intended for profit, it may be questioned whether, in the first instance, any thing else than Oak and Larch should be planted, and the distance must be decided after due consideration is given to the quality and condition of the land.
If, however, a disposition is felt to plant other kinds, as nurses, there can be no objection, provided that their companionship is made fully to square with the well-being of the trees intended for timber.
But where it is intended to introduce nothing that shall not act as a good nurse for the Oak, exception must certainly be taken to the Alder, the Poplars, the Sycamore, the Horse Chesnut, the Birch, and the Scotch Fir, &c. Not one of these discovers any congeniality for the Oak, nor any fitness for the office of nursing it; and it does really appear to my mind, as most unaccountably strange, that trees of all sorts should, without forethought, or calculation—and most particularly, that no reference should be made to their suitability or adaptation for the circumstances in which they are to be placed—be planted at a greater cost than would have sufficed to procure an ample number of the right sort.
Upon a suitable soil, the Spruce Fir has always appeared to me, to be decidedly and incomparably the best nurse of the Oak. I have, for instance, often seen, on a clay soil, a Spruce Fir, and an Oak of twenty-five years growth, flourishing admirably, in close proximity with each other—even within a foot and a half. I do not think that this could be said of any other tree than the Spruce Fir; but besides this, there is almost always a very peculiar healthiness about the Oaks, where the Spruce has been planted and cherished as the principal nurse. There seems to be the best possible understanding between them—no struggling for pre-eminence—no blighting influence exercised by the one over the other. But the Spruce Fir is not found to flourish so well on some soils as on others: it will therefore, mostly, be advisable to unite with it, for a number of years, the Larch, which may be so placed as to be all weeded out during the course of thinning, which ought to commence in a few years after planting, and go on until there remains nothing but Oak in possession of the ground.