Elongate hemlock scale is found almost exclusively on the underside of conifer needles. Given their small size and inconspicuous appearance, the elongate hemlock scale may appear to be dirt or debris to the untrained eye. Elongate hemlock scale has a host range up to 40 species of conifers and prefers: hemlock, fir, and spruce. It has been detected in Minnesota but not in landscape or natural areas. They can be found hitchhiking on:
- Christmas trees
- Holiday wreaths, bows, and sprays
- Nursery stock
Elongate Hemlock Scale Distribution
Elongate Hemlock Scale Biology
- Christmas trees
- Nursery stock
- Logs
- Firewood
- Recreation equipment, including campers, and lawn chairs
Spotted lanternfly is a primary pest of vineyards and nursery stock, with a host range up to 65 plant species. It has not been found in Minnesota. It can be found clinging to most anything including:
- Christmas trees
- Plants
- Smooth building materials like bricks, stone, and metal
- Vehicles, trailers, and freight
A major pest of fruit trees and vegetables with a wide range of host plants, BMSB overwinters by invading and hitchhiking on manufactured items. It is established in parts of Minnesota. They are adept at stowing away on:
- Holiday greenery freight
- Cargo containers
- Vehicles
- Recreation vehicles
Brown Marmorated Stink Bug Distribution
Brown Marmorated Stink Bug Biology
Japanese maple scale has a large host range of mostly trees and shrubs. It has not been found in Minnesota. It can be found hitchhiking on:
- Holiday twigs and sprays of shrubs like dogwood and willow
- Nursery stock
Japanese maple scale is widely distributed throughout the eastern United States.
Spotted lanternfly is a primary pest of vineyards and nursery stock, with a host range up to 65 plant species. It has not been found in Minnesota. It can be found clinging to most anything including:
- Christmas trees
- Plants
- Smooth building materials like bricks, stone, and metal
- Vehicles, trailers, and freight
Spotted lanternfly is a primary pest of vineyards and nursery stock, with a host range up to 65 plant species. It has not been found in Minnesota. It can be found clinging to most anything including:
- Christmas trees
- Plants
- Smooth building materials like bricks, stone, and metal
- Vehicles, trailers, and freight
Holiday Greenery Invasive Pathogens
Holiday wreaths, garlands, and planters often contain shoots from boxwood plants. Boxwood is an evergreen shrub with dark green, round leaves. Boxwood blight is caused by the invasive fungus Calonectria pseudonaviculata. This disease causes leaf spots, stem lesions, and leaf drop in boxwoods. It can spread fast in the landscape, killing nearly all plants affected. It has not been found in Minnesota. This pathogen can:
- Overwinter in plant debris and discarded holiday décor
- Spread to the landscape causing complete collapse of boxwood plants
Boxwood blight is found in more than 25 states including Wisconsin.
Holiday wreaths, garlands, and planters often contain shoots from boxwood plants. Boxwood is an evergreen shrub with dark green, round leaves. Boxwood blight is caused by the invasive fungus Calonectria pseudonaviculata. This disease causes leaf spots, stem lesions, and leaf drop in boxwoods. It can spread fast in the landscape, killing nearly all plants affected. It has not been found in Minnesota. This pathogen can:
- Overwinter in plant debris and discarded holiday décor
- Spread to the landscape causing complete collapse of boxwood plants
Boxwood blight is found in more than 25 states including Wisconsin.
Holiday wreaths, garlands, and planters often contain shoots from boxwood plants. Boxwood is an evergreen shrub with dark green, round leaves. Boxwood blight is caused by the invasive fungus Calonectria pseudonaviculata. This disease causes leaf spots, stem lesions, and leaf drop in boxwoods. It can spread fast in the landscape, killing nearly all plants affected. It has not been found in Minnesota. This pathogen can:
- Overwinter in plant debris and discarded holiday décor
- Spread to the landscape causing complete collapse of boxwood plants
Boxwood blight is found in more than 25 states including Wisconsin.
Sudden oak death host material is potentially used in holiday décor. Host material includes: evergreen trees, bows, and decorative sprays used in holiday arrangements. Sudden oak death is regulated at the federal and state level with quarantines and has not been found in Minnesota. Common species potentially carrying sudden oak death include:
- Evergreen trees, bows, and decorative splays used in holiday arrangements.
- Fir, Abies
- Witch hazel, Hamamelis
- Rhododendron
- Sweet bay laurel
- Holly
- Magnolia
- Scotch heather
- European beech
- Shallon, or Gaultheria shallon
Sudden oak death host material is potentially used in holiday décor. Host material includes: evergreen trees, bows, and decorative sprays used in holiday arrangements. Sudden oak death is regulated at the federal and state level with quarantines and has not been found in Minnesota. Common species potentially carrying sudden oak death include:
- Evergreen trees, bows, and decorative splays used in holiday arrangements.
- Fir, Abies
- Witch hazel, Hamamelis
- Rhododendron
- Sweet bay laurel
- Holly
- Magnolia
- Scotch heather
- European beech
- Shallon, or Gaultheria shallon
Sudden oak death host material is potentially used in holiday décor. Host material includes: evergreen trees, bows, and decorative sprays used in holiday arrangements. Sudden oak death is regulated at the federal and state level with quarantines and has not been found in Minnesota. Common species potentially carrying sudden oak death include:
- Evergreen trees, bows, and decorative splays used in holiday arrangements.
- Fir, Abies
- Witch hazel, Hamamelis
- Rhododendron
- Sweet bay laurel
- Holly
- Magnolia
- Scotch heather
- European beech
- Shallon, or Gaultheria shallon
A major pest of fruit trees and vegetables with a wide range of host plants, BMSB overwinters by invading and hitchhiking on manufactured items. It is established in parts of Minnesota. They are adept at stowing away on:
- Holiday greenery freight
- Cargo containers
- Vehicles
- Recreation vehicles
Brown Marmorated Stink Bug Distribution
Brown Marmorated Stink Bug Biology
