WebAug 31, 2024 · If you suspect that your zinnias have a fungal infection, look for other signs such as white powder on the leaves, black spots, discolored leaves, or stunted growth. If you think your zinnias have a fungal infection, it is important to treat the … WebBroad mites cause discoloration of the foliage of your zinnias, and thrips can cause discoloration of the zinnia flower. Thrips also leave behind dark black feces, which leaves unsightly...
Black Spots On Zinnia Leaves? Quick Answer - yapromusic.com
WebAug 6, 2024 · Fungal Leaf Spot Leaf spot often occurs on common zinnias, although creeping zinnias show greater resistance to this plant disease. The fungal pathogens … WebMost common zinnia ( Z. elegans) cultivars and Z. haageana are susceptible. The Crystal and Star series are highly resistant while the Profusion series are moderately resistant. Symptoms Spots begin on … palazzo di amore 12/2021
Alternaria Blight of Zinnia - Missouri Botanical Garden
Web3. Be sure to water your zinnias deeply less often. These are plants that came from Mexico and Central America, so they are used to hot and dry. The worst way to water is frequently, by hand, as this doesn’t soak down deeply enough to create strong root systems, and tends to dampen the leaves too often. Once a week with a sprinkler going at ... WebRound water-soaked spots become tan to brown sunken spots, 1/8 to ¼ inch in diameter. Leaf spots grow into water-soaked, brown, V-shaped lesions with a yellow border. Leaves wilt, turn yellow, than brown. May remain attached to the plant for a week or more. In severe cases, stems shrivel and turn brown or black. WebMar 26, 2003 · Burpee Seed has a good selection of zinnias (www.burpee.com; 800-888-1447), from the cut-and-come-again kind, with long-stemmed globes that are 2 inches across, to giants up to 5 inches across. I ... うちはマダラか