They thrive in mild … Learn which plants thrive in your Hardiness Zone with our new interactive map! However, native honeysuckles such as northern bush honeysuckle (Diervilla lonicera) and American fly honeysuckle (Lonicera canadensis) are not typically considered as invasive. However, the nectar from the flowers of a honeysuckle plant can be ingested without harm. However, some humans or animals may experience severe reactions to honeysuckle plants, and in these cases respiratory failure, convulsions or coma is possible. A wild honeysuckle vine is commonly found along roadsides, in disturbed areas or even climbing on a backyard fence. Plan the perfect garden with our interactive tool →, Hemera Technologies/Photos.com/Getty Images, Ladybird Johnson Wildflower Center: Digestive Distress from Eating Lonicera Sempervirens, Ohio State University Extension: Bush Honeysuckle, University of Georgia Cooperative Extension: Poisonous Plants in the Landscape, Missouri Botanical Garden: Lonicera Xylosteum, Missouri Botanical Garden: Lonicera Maackii, Missouri Botanical Garden: Lonicera Morrowii, Missouri Botanical Garden: Lonicera Tatarica ‘Alba’. Japanese honeysuckle will spread over the ground and climb up trees, girdling the roots and eventually killing them. These effects are usually mild and occur only when large quantities are ingested. Poisoning symptoms include abdominal pains, diarrhea and vomiting; while the toxin has caused death in laboratory mice, no human deaths have been caused by honeysuckle berries, according to the Canadian Biodiversity Information Facility. Types There are many subspecies of honeysuckle plants; some grow as vines and others grow in shrub forms. Miller holds a diploma in social services from Clarke College in Belleville, Ontario. Elderberries. Gardeners may be confused as to whether or not honeysuckles are safe to plant because of this, and because honeysuckles aren't flagged in many poison control systems as a poisonous plant. While most honeysuckle species are not poisonous, some varieties contain glycosides in the stems or vines, and carotenoids in the berries. Honeysuckles (Lonicera spp.) The amount of active ingredient in herbicides varies, so read the label to determine precautions and the rate and timing of applications. Their toxicity varies on the species, which range from non-poisonous to mildly toxic. However, some poisonous plant resources, like the University of Georgia, the Ladybird Johnson Wildflower Center, and Ohio State University, do confirm that certain honeysuckle varieties contain toxic compounds that can be harmful in large quantities. The berries of some species may be toxic only if ingested in large quantities. Toxicity varies depending on the species, ranging from non-poisonous to mildly toxic. Native types of honeysuckle plants have solid stems, while exotic species tend to have hollow stems. The most common symptom of mild poisoning of honeysuckle berry poisoning is a stomach ache. However, some varieties of honeysuckle are mildly toxic, and care should be taken when planting them in gardens where children or pets play. Ingesting any part of toxic varieties of honeysuckle plants can cause several negative effects. Their rapid growth and fragrant, attractive blooms a backyard fence contact your local emergency service or the poison. 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