Answer: I'm afraid I'm stumped. Spiders spin webs but don't feed on leaves; spidermites spin webs but they don't consume leaves - rather they feed on the fluids and make the leaves kind of a stippled silvery color; caterpillars spin cocoons which can look like webs, and they feed on the leaves. Controls are different for each - insecticidal soaps will control spider mites and bacillus thuringensis (Dipel or Thuricide) will control caterpillars. Or a strong stream of water from the hose will deter the pests. Since spiders are considered beneficial in the garden you shouldn't try to control them. Hope you can figure out the true identity of the web spinning pest so you can find the right control.
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