| Show condition of trees shown by appearance of leavet leave much nay may be seen ot of the condition of 0 trees by watching them iron your car window as you drive along alon says saya E B porter felt ot of the bartlett Eart lett tree research laboratories reddish terminal leaves on many oaks tell of abundant rains anil and vigorous growth the latter reflected la in the rich green of the hillside on olk other foliage especially oaks the th fine gray cray spotting and tiny wiatt or casts are signs of the th midsummer work of the red mil or red spider a rather common pest peat bronzed elra elm leaves on trees growing in bushy thickets tell of an abundance of lace bugs bass when trees ire are distant from shrubs they will not be affected because lace bugs need low growing shrubs to complete their life cycles another species ot op lace bug causes gray spotting on the foliage of our native sycamore or plane trees the sycamore lace bug winters under the bark of the tree when blotchy brown spots are seen on birch leaves these are th the work of the blich birch leaf miner european insect first observed la it this country in 1923 and now generally distributed and responsible for unsightly foliage conditions over much of southern new england anil and adjacent states to the south |
