Table 2. The relative abundance and frequency of problems for 10 woody ornamental plants most often affected by serious pest problems. Data from 90 homesites in Owatonna, Minnesota.
Plant species% of plants with problems% of total problems% of total plants
Picea pungens393.43.2
Cotoneaster lucidus713.82.0
Elaeagnus angustifolia710.80.3
Gleditsia triacanthus var inermis751.10.6
Malus spp.785.22.5
Ribes alpinum837.52.8
Crataegus spp.892.30.9
Lonicera tatarica9514.25.6
Ulmus americana1001.10.4
Betula pendula1000.80.3