Why does your Chrysanthemum Gustavo have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
Spider mites are the most common cause of fine silk webbing on Chrysanthemums, particularly in dry, warm conditions. They feed on the undersides of leaves, causing stippling and eventual leaf drop.
A specific species of mite that thrives in low humidity environments typical for indoor or greenhouse Chrysanthemums. The webbing serves as a protective microclimate for their eggs and nymphs.
While not a direct cause of webbing, extremely dry air can stress Chrysanthemums, making them more susceptible to mite colonies that build webs. This stress weakens the plant's natural chemical defenses.