Samples with the following problems have been seen in the Clinic lately: Angular leaf spot on zucchiniApple scab on crabapple (see this week's article)Environmental stress on maple and spruce (many samples)Environmental tattering on oak and mapleHickory petiole gallIron chlorosis on pin oakLeafminers on dogwoodLeaf spot on turfgrassMaple bladder gallPear leaf blister mitePhomopsis tip blight on cedar Environmental stress on spruce, causing browning of the newest growth. Similar symptoms have been reported from throughout the state, often concentrated on the south and west sides of the tree.