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Black spot (class Leotiomycetes: family Helotiales) Diplocarpon rosae syn. Marssonina rosae – Marssonina rosae causes black spots on leaves. [4] The spots, which may be as much as 12 mm across, are generally circular and have an irregular edge often with a yellow halo. Leaves frequently turn yellow and fall early. Sometimes new leaves are ...
With enough warm summer days upon us, many gardeners in the area are beginning to sing their woes about the dreaded Japanese beetle. Generally numerous, these metallic green and brown insects are ...
The Japanese beetle (Popillia japonica) is a species of scarab beetle. Due to the presence of natural predators , the Japanese beetle is not considered a pest in its native Japan, but in North America and some regions of Europe, it is a noted pest to roughly 300 species of plants.
Boxelder bugs only feed on box elder seeds and leaves, so they don't actually cause damage to most plants. "They appear in high numbers which leads people to get concerned when you see 50, 60 ...
You name it, this creature will eat it. Roses, ornamental trees, flower beds, orchards, vineyards, vegetable gardens, all a feast for Japanese beetles.. Like cicadas, Japanese beetles live most of ...
The black spots are circular with a perforated edge, and reach a diameter of 14 mm (1 ⁄ 2 inch). Badly affected plants, however, will not show the circular patterning, as they combine to cause a large, black mass. The common treatment of the disease is to remove the affected leaves and spray with antifungal solutions.
The metallic green beetles can damage more than 300 types of “ornamental, horticultural, agricultural and native plants,” Sacramento County said. Invasive beetles found in Sacramento area pose ...
The same damage is seen in soybeans, as the stink bug goes through the seed pods to acquire the juices of the seeds. One visual cue of stink-bug damage to soybean crops is the "stay green" effect, where damaged soybean plants stay green late into season, while other plants in the field die off normally.