By Sharon Omahen
University of Georgia
Fertilizer isn't food“A lot of people rely heavily on fertilizer as the magic cure-all,” Chance said. “Fertilizer for a plant is like vitamins for us. It provides nutrients, but it’s not a food source.” Fertilizer does provide nutrients so that a plant can make its own food through photosynthesis, he said. However, fertilizer usually won’t “cure” a plant of its aliments, he said. “Nutrient deficiency will stunt a plant, but it doesn’t kill them very often,” Chance said. “You also have to add the correct nutrient. If I’m calcium deficient, it won’t help for me to pump myself full of Vitamin C.”
Don't over waterPeople need water to survive and so do plants. But don’t give your plants too much of a good thing. “When a person tells me they know their problem isn’t water-related, I know it very likely is,” he said. “People are actually killing plants during a drought by watering them too often.” Watering plants too much can actually cause more harm than good. Excess water deprives roots of oxygen and creates a perfect environment for fungi and water molds to attack and kill roots, Chance said. “It’s best to water your plants very deeply, once a week,” he said. “If you water every day you are creating a shallow root system. The secret is to water deeply and infrequently.” Annual plants and vegetables should be watered twice a week.
React to emergenciesJust like with humans, emergency situations can lead to situations that contradict the rules. “If your plant is wilted, give it water,” he said. “It’s like when a diabetic person’s blood sugar level drops. They aren’t supposed to eat sweets, but you give them a candy bar to bring their sugar level up quickly.” When humans need surgery, they rely on anesthesia to prevent pain. Plants appreciate the same treatment, Chance said. Woody plants should be pruned during their dormant period. For many plants this is December through March, he said. “You can prune later,” Chance said. “But expect pruning during the growing season to slow plant growth more than dormant pruning.” Spring flowering plants should be pruned after they bloom but before mid-July. “You want to prune before the new buds begin to form for next year,” Chance said. Prune non-blooming plants from late December through mid-September.
Be responsive“Some people tell me all the things their landscape company has done, but they don’t admit to what they personally haven’t done,” he said. “A professional company just comes to your home once a month or so. You’re there every day.” Just as humans are responsible for the upkeep of their bodies, homeowners are ultimately responsible for what they allow to happen in their landscape. “When you go to doctor and find out you have high cholesterol and you’re over weight, the doctor isn’t going to talk to you about trimming your toenails,” he said. “You have to address the real problem -- not add a bandage to it and hope it heals itself.” For landscape advice from your county UGA Extension agent call 1-800-ASK-UGA1. (Sharon Omahen is a news editor with the University of Georgia College of Agricultural and Environmental Sciences.)
(Sharon Omahen is a news editor with the University of Georgia College of Agricultural and Environmental Sciences.)