What is that mossy pincushion on my rose leaves?

gwtamaraJanuary 1, 2013

These orange, moss-covered looking growths appear on rose leaves in June and July and are caused by the gall wasp. Each is a mass of cells which contain one gall wasp larvae which will hatch in the spring. Gall wasps likw to eat aphids. They don't do any harm and can be cut off.

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