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Why Fertilize? |
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Forest trees thrive without the addition of fertilizer, which can give the erroneous impression that trees, in general, do not require fertilizer. However, shade and ornamental trees in landscapes are subjected to unfavorable soil and environmental conditions.
Forest soils are rich in humus, which is replenished by the decay in plant and animal residues. Leaves are relatively high in accumulated nutrients and their decomposition is an important source of returning nutrients to the soil. Organic matter increases the retention and availability of most plant nutrients and improves the soil structure by "cementing" or aggregating soil particles.
In contrast, domestic and street lawns are usually very low in humus and fertility. Leaves and other debris are removed, thus interrupting nature’s recycling program for nutrients and preventing the accumulation of organic matter. The soil elements, which were absorbed and utilized in the formation of plant tissues are not returned to the soil and should be replaced with supplemental fertilization.
Shade and ornamental trees require supplemental nutrients for optimum growth and development. The addition of a proper fertilizer not only improves the appearance and condition of trees but in some cases, enables trees to better withstand pests.
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