Archives for the "chemical control" Category

English Ivy: A “Dirty Dozen” Plant

Have you ever looked along a highway and observed all the trees covered in vegetation from trunk to branches? It was most likely English ivy (Hedera helix), the final of […]

Japanese Honeysuckle: A “Dirty Dozen” Plant

Our Dirty Dozen plant of the week is Japanese honeysuckle (Lonicera japonica).¬†This ornamental vine is still widely available in the horticultural trade, even though it has invaded all of the […]

Tree-of-Heaven: A “Dirty Dozen” Plant

This week we are featuring tree-of-heaven (Ailanthus altissima) as our “Dirty Dozen” plant. While this tree may have been used in folk medicine or even as an insecticide, it is […]

Oriental Bittersweet: A “Dirty Dozen” Plant

This week’s Dirty Dozen plant is oriental bittersweet (Celastrus orbiculatus). Since it is still available in the horticultural trade, we hope that the following information will convince you not to […]

Porcelain Berry: A “Dirty Dozen” Plant

This week’s featured member of the “Dirty Dozen” is Ampelopsis glandulosa var. brevipedunculata, commonly known as porcelain berry or amur peppervine. Most horticulture staff agree that this is the most […]

Chinese Privet: A “Dirty Dozen” Plant

This week’s featured member of the “Dirty Dozen” is Chinese privet (Ligustrum sinense). Though several southern states, including Virginia, have recognized this plant in their invasive species lists or laws,¬† […]