Attacks plum, apricot, cherry and chokecherry trees -- both fruiting and ornamental. We didn't find anything that matched your search. Accurate identification of plant pests, pathogens and weeds is crucial to implementing proper management strategies for the problems that they cause. Both stages of this insect are formidable to see, but the hornworm is not a welcome sight in the vegetable garden. This list will help you learn about common pests and diseases and how to identify them. We didn't find anything that matched your search. Symptoms appear as yellow to white patches on the upper surfaces of older leaves. Use the pest and disease factsheets to diagnose the problems with your plants and follow the recommended solutions to treat them. Indoor Plant Disease Prevention . Whiteflies. Look for pale yellow, pinhead sized spots on the upper surface of the leaves shortly after bloom. Occurs when old seed is planted in cold, wet soil and is further increased by poor drainage. Repeat applications will likely need to be made. Cucumber plants are sensitive to many chemicals, so follow the label’s instructions carefully and use chemicals only as a last resort. Since wireworms are so common, they are extremely hard to control. As larvae, they feed on roots, leaving plants susceptible to wind damage. Plant Disease Identification Guides. In fact, most fungal, bacterial and viral plant diseases are spread naturally by wind currents, rain, soil seeds, insects and other animals. Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board. They are responsible for a great deal of damage and are characterized by wilting, scabs, moldy coatings, rusts, blotches and rotted tissue. Gardening in your yard has major upsides, but it has one irritating downside: pests and diseases that attack your beautiful plants and delicious homegrown vegetables. A telltale sign of bacterial wilt is the sticky, white sap-like substance that oozes from snapped stems. We didn't find anything that matched your search. Holes in cabbage leaves are a telltale sign of cabbage worm feeding. Reddish-orange spore masses are found primarily on the surface of lower leaves. As larvae, they feed on roots, leaving plants susceptible to wind damage. Plant Disease Identification Guides. No Results. A common pathogen affecting almonds, apricots, cherries, peaches and plums. A fungicide can be used and the leaves can be removed from the lower part of the plant to prevent spores from splashing up onto the foliage. They are responsible for a great deal of damage and are characterized by wilting, scabs, moldy coatings, rusts, blotches and rotted tissue. Ripening tomato and pepper fruits develop a large, sunken, leathery spot on the bottom end. Infected plant leaves have intermingled patches of light green or yellowish colors. Click on the links or pictures below to learn more. Advice Pests and Diseases Pest and Disease Directory. Disinfect pruners with a 10% bleach solution or full-strength isopropyl alcohol after using on a plant with insects or disease. If you discover a small infestation in your garden, wash it off with a blast of water from the hose or by sinking the plant into a bucket of water. University of Colorado Extension, Marie Iannotti is an author, photographer, and speaker with 27 years of experience as a Cornell Cooperative Extension Horticulture Educator and Master Gardener, The Spruce uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Identification and Treatment for Houseplant Diseases. The best way to control whiteflies is to constantly monitor for them and use a combination of techniques to keep their population down. Common targets of these beetles are cucumber, cantaloupe, watermelon, pumpkin, … When you think you’ve collected all of the dead plant, follow these disposal tips: Control the damage done by cucumber beetles by buying wilt-resistant plants and keeping plants off the ground by using a trellis. Derechos Reservados - Enrique Freire / Getty Images. Leaves have dark water-soaked spots, sometimes with a yellow halo, usually uniform in size. Long term effected plants may become infected with disease or viruses, the leaves may also turn yellow in random patches. Aphids have infested this scabiosa plant. The RHS has analysed thousands of gardener enquiries for its latest tally of top 10 diseases and pests. Remove and destroy any affected leaves. This boxwood suffered a severe spider mite infestation, causing the leaves to dry out and die. Botrytis, or gray mold, is a fungus that frequently affects peony plants. Bacterial wilt is a serious disease of cucumbers and muskmelons. The spread of bacterial wilt can be deadly and quick. Wireworms are very common in most types of soil and can be found year-round.
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