Allelopathic plants

Toxin-producing plants are said to be allelopathic, which is the ability of a plant to release toxins that suppress the growth of plants in its vicinity.  Black walnut is an example

Scientific Name Common Name(s) Ground cover? Evergreen? Plant Form(s) Tolerates
Acer rubrum Red maple No No Large Trees Air pollution, Allelopathic plants, Dry soils/drought, Soil compaction, Urban environments, Wet conditions
Allium cernuum Nodding onion No No Herbs Allelopathic plants, Dry soils/drought, Poor soil (sand/clay)
Andropogon gerardii Big bluestem, Turkeyfoot No No Grasses, Sedges & Rushes Air pollution, Allelopathic plants, Dry soils/drought, Salt, Wet conditions
Baptisia australis Blue wild indigo, False blue indigo No No Herbs Allelopathic plants, Dry soils/drought, Salt, Soil compaction, Urban environments
Betula nigra River birch, Red birch No No Large Trees Air pollution, Allelopathic plants, Dry soils/drought, Salt, Soil compaction, Wet conditions
Carpinus caroliniana American hornbeam, Ironwood No No Medium Trees, Shrubs & Small Trees Allelopathic plants, Dry soils/drought, Wet conditions, Urban environments
Ceanothus americanus New jersey tea, Redroot No No Shrubs & Small Trees Allelopathic plants, Dry soils/drought, Poor soil (sand/clay), Urban environments
Cercis canadensis Eastern redbud No No Medium Trees Acidic soils, Allelopathic plants, Alkaline soils, Soil compaction
Chasmanthium latifolium River oats, Indian wood oats, Inland sea oats, Wild oats, Wood-oat, Northern sea oats No No Grasses, Sedges & Rushes Dry soils/drought, Allelopathic plants, Salt, Wet conditions
Clematis virginiana Virgin's-bower No No Vines Allelopathic plants
Cornus amomum Silky dogwood No No Shrubs & Small Trees Allelopathic plants, Salt, Wet conditions
Elymus hystrix Bottlebrush grass, Bottle-brush grass No No Grasses, Sedges & Rushes Dry soils/drought, Allelopathic plants, Air pollution
Eragrostis spectabilis Purple lovegrass, Tumblegrass No No Grasses, Sedges & Rushes Air pollution, Allelopathic plants, Dry soils/drought, Poor soil (sand/clay), Salt
Fagus grandifolia American beech No No Large Trees Allelopathic plants, Salt
Hydrangea arborescens Wild hydrangea, Smooth hydrangea No No Shrubs & Small Trees Allelopathic plants, Salt
Monarda didyma Scarlet beebalm, Oswego tea No No Herbs Wet conditions, Allelopathic plants
Muhlenbergia capillaris Hair-awn muhly, Long-awn hairgrass No No Grasses, Sedges & Rushes Poor soil (sand/clay), Dry soils/drought, Allelopathic plants, Air pollution, Salt
Nyssa sylvatica Black gum, Sour gum No No Large Trees, Medium Trees Salt, Soil compaction, Wet conditions, Dry soils/drought, Allelopathic plants, Air pollution
Phlox paniculata Fall phlox, Garden phlox No No Herbs Salt, Allelopathic plants
Platanus occidentalis Sycamore, American sycamore No Yes Large Trees Dry soils/drought, Salt, Soil compaction, Allelopathic plants, Air pollution, Urban environments, Wet conditions
Quercus alba White oak No No Large Trees Dry soils/drought, Salt, Acidic soils, Allelopathic plants
Quercus bicolor Swamp white oak No No Large Trees Dry soils/drought, Salt, Soil compaction, Wet conditions, Acidic soils, Allelopathic plants, Poor soil (sand/clay)
Quercus coccinea Scarlet oak No No Large Trees Allelopathic plants, Dry soils/drought
Quercus rubra Northern red oak No No Large Trees Dry soils/drought, Soil compaction, Allelopathic plants, Air pollution
Quercus velutina Black oak No No Large Trees Dry soils/drought, Salt, Allelopathic plants
Rhus aromatica Fragrant sumac, Aromatic sumac, Lemon sumac, Polecat bush, Polecat sumac Yes No Shrubs & Small Trees Allelopathic plants, Dry soils/drought
Rhus glabra Smooth sumac No No Shrubs & Small Trees Dry soils/drought, Salt, Allelopathic plants
Schizachyrium scoparium Little bluestem, Prairie beardgrass, Prairie beard ggass No No Grasses, Sedges & Rushes Dry soils/drought, Salt, Soil compaction, Urban environments, Some foot traffic, Allelopathic plants, Air pollution
Sorghastrum nutans Indian grass, Yellow indian grass No No Grasses, Sedges & Rushes Salt, Dry soils/drought, Allelopathic plants, Wet conditions
Staphylea trifolia Bladdernut No No Shrubs & Small Trees Dry soils/drought, Wet conditions, Allelopathic plants
Viburnum dentatum Arrow-wood No No Shrubs & Small Trees Dry soils/drought, Salt, Wet conditions, Allelopathic plants
Viburnum prunifolium Black haw No No Shrubs & Small Trees Dry soils/drought, Urban environments, Acidic soils, Allelopathic plants, Air pollution
Subscribe to Allelopathic plants