Invasive Species

10 (regrettably) common invasive species

Preserve managers and volunteers are hard at work protecting the fragile ecology of Glen Helen by removing these plants when found. Learn more about our efforts to remove invasive species by visiting Restoring the Glen.

Common Name	Latin Name	Notes
Amur (bush) honeysuckle	Lonicera maackii	ODNR fact sheet available (PDF)
Japanese honeysuckle	Lonicera japonica	ODNR fact sheet available (PDF)
Asian bittersweet	Celastrus orbiculatus	ODNR fact sheet available (PDF)
Privet	Ligustrum vulgare
Multiflora rose	Rosa multiflora	ODNR fact sheet available (PDF)
Common wintercreeper/Fortune's spindle	Euonymus fortunei
Garlic mustard	Alliaria officinalis	ODNR fact sheet available (PDF)
English ivy	Hedera helix
Tree-of-heaven	Ailanthus altissima	ODNR fact sheet available (PDF)
Japanese knotweed	Polygonum cuspidatum	ODNR fact sheet available (PDF)
Autumn olive	Elaeagnus umbellata	ODNR fact sheet available (PDF)