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Invasive Species |
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Tree Killers
Tartarian Honeysuckle
(Lonicera tatarica)
 Photo 11: John M. Randall/The Nature Conservancy Biology
- a large, multi-stemmed shrub (to 5 m or 16 ft tall) that has pairs of egg-shaped leaves and fragrant white to dark pink flowers in spring
- reproduces mainly by seeds found in paired, colourful, fleshy berries that develop abundantly after flowering
- birds eat the berries and are responsible for much of the spread of Tartarian Honeysuckle since the seeds within the fruit pass through the bird without damage
- tolerates a wide range of upland habitats including forests and woodland edges
 Photo 12: John M. Randall/The Nature Conservancy History in Canada
- introduced from Asia in the early 1800's as ornamentals and still available from nurseries
- most abundant in southern Ontario but occurs east to Nova Scotia and west to Alberta
Impact on Trees
- often grow in dense stands that suppress native tree seedlings due to shade
- may release toxic compounds that inhibit other plants
 Photo 13: Chris Evans, River to River CWMA, Bugwood.org Control
- cutting or girdling stems followed by herbicide application to the cut stems or later removal of sprouts that develop after cutting
- herbicide application to the entire shrub
- several years of control may be needed since seeds are unaffected by the above methods and seedlings can recolonize an area
- prescribed burning may also reduce populations in open areas
Related Species
- Amur Honeysuckle (Lonicera maackii), Belle Honeysuckle (Lonicera Xbellii), and Morrow's Honeysuckle (Lonicera morrowii) are all similar and closely-related to Tartarian Honeysuckle and they may all affect trees
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