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Pine

Botanical Name Pinus spp.
Family Pinaceae
Origin Mostly temperate regions, some subtropical, tropical.

Identification

Evergreen, resinous tree or, less commonly, shrub. Regular whorled branches, rough bark with fissures. Needle-like leaves in bunches. Produces cones.

Habitats

Shrub, open places i.e. open slopes. Near pine plantations.

Impact to Biota and Ecosystems

Dominates/excludes other vegetation. Seeds into shrubland areas, and older trees become a canopy component in forest. Maritime pine (Pinus pinaster) is an aggressive species tolerating hard conditions. Lodgepole pine (P.contorta) is a serious problem in the southern part of the Bay of Plenty Region.

Dispersal Routes, Vectors, Infestation Sources

Seeds from shelter belts and plantations. Planted in parks and cemeteries. Often regenerates prolifically after fire.

Management

Management 

Physical Control

Young plants may be hand pulled or grubbed out. Fell larger trees.

Disposal  
Chemical Control

An alternative to felling tree. With 20 mm timber auger make holes 80 mm deep, three to five for each tree depending on size. Fill with undiluted Glyphosate or 5 g Metsulfuron / litre of water. Results should be obvious within 5-10 days.

Biological Control

 
Recommended Approach

Hand pull seedlings. Fell or drill and treat larger trees.

Further Comment

In coastal areas rotting stumps are often a good seed bed for pohutukawa.