Invasive Species

There is no single authority or bureaucratic office for invasive species in Nova Scotia

MTRI Guide to Invasive Species

I consider a guide produced by MTRI in 2012 as the most authoritative source of info on invasive species in Nova Scotia currently. (They use the term “alien” instead of “exotic”.)

The MTRI GuideĀ  lists the following as invasive plant species:

  • Norway maple (Acer platanoides)
  • Oriental bittersweet (Celastrus orbiculatus)
  • Glossy buckthorn (Frangula alnus)
  • Common reed (Phragmites australis ssp. australis)
  • Scots pine (Pinus sylvestris)
  • Rugosa rose (Rosa rugosa)
  • Yellow floating heart (Nymphoides peltata)- an aquatic

and lists these as species to watch out for:

  • Purple loosestrife (Lythrum salicaria)
  • Knotweed Species (Polygonum cuspidatum & sachalinense)
  • Multiflora rose (Rosa multiflora)
  • Giant hogweed (Heracleum mantegazzianum)
  • Common valerian (Valeriana officinalis)
  • Common hawkweed (Hieracium lachenalii)
  • Woodland angelica (Angelica sylvestris)
  • Garlic mustard (Alliaria petiolata)
  • Reed canary grass (Phalaris arundinacea)

Of those, all are currently present in NS except Woodland Angelica (it is in NB)

The guide gives detailed descriptions of the species, their habitats etc. It also includes fish (chain pickerel and smallmouth bass), Dutch Elm Disease, Balsam Wooly Adelgid. Smallmouth bass occurs in Sandy Lake.

I suspect if they were revising the guide today, Rosa multiflora would be on the first list, not the second.