In order to renew dying plants, it is important that you find out one important thing. Are your flowers dying or are they dead? If they are dead, you are out luck. However, if you notice that your flowers are beginning to wilt and fade prematurely, there are preventive measures you can take to stop them from dying completely.
First, if plants begin to look withered and discolored, the first question you should ask yourself, "Are they getting enough water?" Water is most often the main cause for premature death. Faded colors and withered leaves indicate a lack of water. If the flower looks limp and discolored, but does not have the leathery appearance of dehydration, it's a decent possibility that your plant may be waterlogged and you should reduce the amount of water you are giving them.
Nutrients may also be the reason your flowers are dying. Before fertilizing, take a sample test of soil to measure its nutrient content. If you see that it is lacking in a particularly important nutrient, like nitrogen or potassium, giving your flowers a healthy dose couldn't hurt. If plants aren't damaged too severely, this may help to bring them back.
Lack of or overexposure to sun will also cause flowers unnecessary harm. If the leaves look as if they are shriveled and burnt, but you are positive that you have been giving them the recommended amount of water, then the plants may be suffering from sunburn, literally. If a plant is not well adapted to being placed in direct sunlight, the sun can actually cause physical harm to the plants leaves. By moving the plant out of sun and giving it a moderate watering, you could help to replenish the moisture the flower lost. If, on the other hand, your flowers are lacking in color and seem faded and lifeless, this could be a result of too little sun. You will want to check what the requirements are for the specific plant with which you are having problems. Chances are, if you go down the checklist, you will find a discrepancy.
After you have discovered what is ailing your plants, watch its progress. If you notice that some foliage and blooms are looking healthier while others are steadfastly becoming worst, clip off the dying flowers. These were too far gone for you to have saved and by allowing them to stay on your plant, they are using up necessary nutrients that could be used to restore the areas of the plant that can actually use it.
Most problems with plants come down to water, soil nutrition, sun exposure, and diseases and pest. If you believe your plant is suffering from a disease or bacterial infection, you should remove it immediately. Most plants cannot be cured once they have the disease. By removing it, you will prevent your other flowers from catching it. If you suspect an infestation, steps to rid yourself of them will vary based on the pest.