The Morton Arb

Articles tagged Black Knot

• Black Knot of Ornamental Cherry and Plum

  | Category: Insects & Diseases | Tags: Black Knot, Ornamental Cherry and Plum
  Black knot is a serious disease of plum and cherry trees (Prunus species) throughout the United States. Black knot is a disease that gets progressively worse each year unless controlled, and it will eventually stunt or kill the tree. It is...

• July 2, 2010

  | Category: Plant Health Care Reports | Tags: magnolia scale, leafminers on maple, Phyllosticta leaf spot, measles on peony, pine needle rust on goldenrod, rust on mayapple, Black Knot, Common persimmon (Diospyros virginiana), Daldinia concentrica
  This issue includes details on many items including: Magnolia scale, leafminers on maple, Phyllosticta leaf spot, measles on peony, pine needle rust on goldenrod, rust on mayapple, and black knotWoody of the Week: Common persimmon (Diospyros...

• Plant Health Care Report, May 20, 2011 (Issue 2011.05)

  | Category: Plant Health Care Reports | Tags: The Morton Arboretum, Illinois, Chicago, Black Knot, Rose, Dibotryon morbosum, Taphrina deformans, peach leaf curl, Apple Scab, Venturia inaequalis, sycamore anthracnose, Apiognomonia veneta, Aphids, weather
  May 20, 2010                                                                                                   Issue 2011.05 Our report includes...