This process does not work with all plants, but it is considered a highly effective technique. The gardener should also prune the hydroponic plants regularly. The plant might need to be pruned to focus its energy on the remaining shoots. However, pruning is an art and should be performed with care. Damaged or dying roots may also need to be pruned from time to time. Commercial growers are changing to hydroponics like never before as the ideals surrounding the growing techniques touch on subjects that interest most people, including world hunger and making the world cleaner. Everyday people have begun to purchase their own hydroponic systems to grow great tasting and fresh food for their family and friends. If you are a beginning hydroponic gardener you may want to use the pre-mixed nutrient solutions and observe their effects before you begin to make your own solutions. The basic nutrients needed in any hydroponic solution are potassium phosphate, potassium nitrate, calcium nitrate and magnesium sulfate. Also, the water that is used is used more effectively; in hydroponics, weeds do not steal part of the crop’s water supply. The benefits are not without their costs, however. The environmental good that hydroponics produces with its decreased water consumption is somewhat negated by the amount of energy needed to support hydroponic growing. The use of decomposing organic matter is rarely used indoors because of the odor and it is unsanitary because of the bugs it attracts. It can be used outdoors in a greenhouse but the bug problem and their potential diseases need to be addressed in order to save your plants from their adverse effects. Beginning growers will be satisfied with the quality of their crops, and the rates at which they will grow. Flowers and tree seedlings can also be grown using hydroponics. Hydroponic greenhouses produce millions of plant seedlings each year, which are transplanted and grown at other locations where they are later planted into soil.