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Growing anything under mature Pine trees will be a challenge because the plants underneath have almost everything going against them. Issue number one is shade. Secondly, the Pine’s hungry roots take up valuable nutrients so there is little left for other plants. Third, the soil is dry under Pine trees because rain falls on the outside limbs or drip line of the tree above. Finally, and perhaps most significant, is the fact that Pines constantly drop needles that slowly decompose causing the soil to be too acidic. The process of Pines dropping dead needles is perfectly normal and does not indicate a health concern for the tree. As Pines grow and produce new needles, their inner needles become redundant and turn brown before they fall to the ground. Spruce, Fir, and Cedars will do the same thing. Some evergreens will replace their needles every three years. Trees that are under stress or have recently been transplanted will drop more needles than healthy trees. Perhaps the most effective way to get plants to grow underneath Pines is to replace the soil underneath them. This involves excavating the top few inches of soil and replacing it with new topsoil. The new soil will be healthy enough to support almost any plants below. Choosing the right plants to grow under Pine trees is essential. For perennials, choose plants that are hardy, shade loving and tolerant of acidic soil. English Ivy (Hedera), Japanese Spurge (Pachysandra) and Hosta are good choices. Barrenwort (Epimedium), Lily of the Valley (Convularia), and hardy Geraniums will also do well. For evergreens, Yews and Boxwood are a sure bet. Your last choice ought to be grass, because its fertilizer, nutrient and moisture requirements are too great. Because the growing conditions under a Pine will be challenging, be sure to give extra water to the plants, especially for the first year or two. Add fertilizer to the soil for extra insurance. If you would rather not attempt to grow anything under your Pine tree, consider tidying up the barren space underneath by adding mulch. Take the time to make a circle bed under the tree or get creative with a more unique garden shape. Use Cedar, Pine, or other shredded wood. You may want to add a boulder in the garden for added interest. |
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