Questions 34 through 44 are based on the following passage.
Quality of trees: Trees grown in a nursery are preferable for transplanting to trees grown in the forest. Nursery-grown trees possess a well-developed root system with numerous fibrous rootlets, a straight stem, a symmetrical crown (34) , and a well-defined leader. Trees grown in neighboring nurseries are preferable to those grown at great distances (35) , yet they will be better adapted to local climatic and soil conditions. The short distances over which they must be transported also will entail less danger to the roots through drying. For lawn planting, the branches should reach low to the ground, while for street purposes the branches should start at about seven feet from the ground. (36) For woodland planting, the form of the tree is of minor consideration, though it is better to have the leader well defined here as well as in the other cases.
When and how to procure the trees: The trees should be selected in the nursery (37) on your own terms. Some people prefer to secure the more valuable specimens with leaden seals. Fall is the best time to make the selection, because at that time one can have a wider choice of material. Selecting this early will also prevent delay in delivery at the time when it is desired to plant.
When to plant: The best time to plant trees is early spring, just before growth begins, and after the frost is out of the ground. The planting period in the Eastern States is generally from the latter part of March to the early part of May.
Where (38) she has to plant both coniferous and deciduous trees, it is best to get the deciduous in first, and then the conifers.
How to plant: (39) The location of the trees in relation to each other should be carefully considered. On the lawn, they should be separated far enough to allow for the full spread of the tree. On streets, trees should be planted thirty to thirty-five feet apart and in case of the elm, forty to fifty feet. In woodlands, it is best to plant as close as six feet apart where small seedlings are used and about twelve feet apart in the case of trees an inch or more in diameter. An abundance of good soil (one to two cubic yards) is essential with each tree where the specimens used are an inch or two in diameter. A rich mellow loam, such as one finds on the surface of a well-tilled farm, is the most ideal. (40) Manure placed in direct contact with the roots or stem of the tree.
Protecting the roots from drying is the chief precaution to be observed during the planting process, and for this reason a cloudy day is preferable to a sunny day for planting. Regarding evergreens, the least exposure of the roots is liable to result in disaster, even more so than in the case of deciduous trees. This is why evergreens are lifted from the nursery with a ball of soil around the roots. All bruised roots should be cut off before the tree is (41) planted, and the crowns of deciduous trees should be slightly trimmed in order to equalize the loss of roots by a corresponding decrease in leaf surface.
The tree should be set into the tree hole at the same depth that it stood in the nursery. Its roots, where there is no ball of soil around them, should be carefully (42) detached and good soil should be worked in carefully with the fingers among the fine rootlets. (43) The rootlets anchor the tree to the ground and absorb water. Every root fibre is thus brought into close contact with the soil. More good soil should be added (in layers) and firmly packed about the roots.
The last layer should remain loose so that it may act as a mulch or as an absorbent of moisture. The tree should then be thoroughly
watered. (44) In order to support the tree, the lowest branch should be at least 7 feet from the ground.