If you have one or two conifer trees in your backyard, you may wonder what kind of fertilizer should be applied on them. Like all other trees, evergreen trees also need suitable nutrition for their growth. In wild mountain forest, the nutrition will come from the previously fallen leaves and barks from the tree. However, your garden can not provide such a way to feed them due to the requirements of landscaping purposes. So, some fertilizers are necessary for these trees.
Sometimes, the trees themselves will inform you of the information that they are short of some nutrition. If you see yellow or brown colors appearing on their leaves or the growth rate is very slow, it is time to apply some fertilizers on them. If the soil structure is not as good as you expected, you may need to fertilize them more frequently than well-drained soil. More fertilizers are also required when they are suffering some diseases as well.
The recipe of the fertilizer will be different for diverse conifer species. Generally a well-balanced supply of nitrogen, phosphorus, and potassium is recommended. Usually, the percentage of nitrogen should be a little more than the other elements. You should do some testing on the soil before applying any fertilizers to make sure the recipe is working well. You should add or subtract corresponding elements on the basis of the nutrition in the soil. Most conifer trees prefer to grow in an acid soil environment.
Usually, the best time to fertilize evergreen trees is from the early spring to the mid-summer. Adequate nutrition will facilitate the max growth rate. You should lessen the amount of fertilizers before the winter dates when they will enter their dormant periods. High growth rate in cold days will weaken the health of the trees. The amount of fertilizer used for the trees depend on the area of the tree spread over. For example, if a tree will cover 10 meters in one side, the total area it covers should be 100 square meters.
Image Provided By Kevin Hale [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons