Ozone: Leaves are bleached between the veins and faded, often turning silver or gray. Sanitation is important so be sure to remove all debris at the end of the season. Burpee Recommends: Remove affected foliage. They do not usually kill plants, but disfigure the foliage. The larvae are yellow cylindrical maggots and the adults are small black and yellow flies. Leafminers: These insects bore just under the leaf surface causing irregular serpentine lines. Japanese Beetles: Burpee Recommends: Hand pick early in the morning into a bucket of soapy water. You can also wash them off with a strong spray, or use an insecticidal soap. Burpee Recommends: Introduce or attract natural predators into your garden such as lady beetles and wasps which feed on aphids. They leave a sticky residue on foliage that attracts ants. Common Pest and Cultural ProblemsĪphids: Greenish, red, black or peach colored sucking insects can spread disease as they feed on the undersides of leaves. Try not to get the stems and leaves wet when watering the plant. Burpee Recommends: Remove any infected stem as soon as you see symptoms. This fungus can spread to all parts of the plant causing the plant to die. Stem Canker: Part of the stem looks sunken and turns brown. Contact your Cooperative Extension Service for recommendations. Burpee Recommends: Practice crop rotation. Rust: A number of fungus diseases that rust colored spots on foliage. Burpee Recommends: Keep seedlings moist but do not overwater avoid over-fertilizing your seedlings thin out seedlings to avoid overcrowding make sure the plants are getting good air circulation. Typically, this indicates that the soil is too wet or contains high amounts of nitrogen fertilizer. Damping off is caused by a fungus that is active when there is abundant moisture and soils and air temperatures are above 68 degrees F. The seedling emerges and appears healthy then it suddenly wilts and dies for no obvious reason. Control weeds where the disease can overwinter.ĭamping Off: This is one of the most common problems when starting plants from seed.
Do not work around plants when they are wet. Provide adequate air circulation, do not overcrowd plants.
Burpee Recommends: Rotate crops with plants in a different family. Yellow-orange V shaped lesions occur on the edges of the leaves and eventually dry out and the leaves fall off. Black Rot: This bacterial disease thrives in warm and humid conditions and attacks the leaves.
0 kommentar(er)
