Bending down of needles (Dreyfusia ), bending upwards (Mindarus); browning of the needles, shoots with stunted growth, woolly web on the shoot and the stem; aphids on needles, shoots and stems, dieback.
Affected tree species
Needle; Stem; Shoot/Twig/Branch;
Common parasite of various species of firs, on young trees sometimes endangering
Curative measures Curative measures only hygienic: dead plants or heavy infested plants should be removed carefully (best during winter); chemical treatment (see official register of Plant Protection) with contact-insecticides (two times application). As preventive measures repeated application of paraffin-oil compounds during winter (official register of Plant Protection).