Invasive Non-Native Plants

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Himalayan balsam

During phase 1 habitats surveys and preliminary ecological appraisals we will endeavour to identify the presence of problematic species. If problematic plant species are known or expected on site then audits can be undertaken during the growing period (usually from April to end-September), during an audit we will aim to identify and map the extent of all invasive non-native plant species as designated in section 14, schedule 9, part 2 of The Wildlife and Countryside Act 1981 (as amended).

  • Water Fern (Azolla filiculoides)
  • Giant Salvinia (Salvinia molesta)
  • Few-flowered Leek (Allium paradoxum)
  • Fanwort / Carolina Water-Shield (Cabomba caroliniana)
  • Hottentot Fig (Carpobrotus edulis)
  • Australian Swamp Stonecrop / New Zealand Pygmyweed (Crassula helmsii)
  • Water Hyacinth (Eichhornia crassipes)
  • Shallon (Gaultheria shallon)
  • Giant Hogweed (Heracleum mantegazzianum)
  • Floating Pennywort (Hydrocotyle ranunculoides)
  • Curly Waterweed (Lagarosiphon major)
  • Parrot’s-feather (Myriophyllum aquaticum)
  • Water Lettuce (Pistia stratiotes)
  • Japanese Knotweed (Fallopia japonica)
  • Giant Knotweed (Fallopia sachalinensis)
  • Hybrid Knotweed (Fallopia japonica x Fallopia sachalinensis)
  • False-acacia (Robinia pseudoacacia)
  • Perfoliate Alexanders (Smyrnium perfoliatum)
  • Variegated Yellow Archangel (Lamiastrum galeobdolon subsp. argentatum)
  • Yellow Azalea (Rhododendron luteum)
  • Himalayan Balsam (Impatiens glandulifera)
  • Cotoneaster species (Cotoneaster spp.)
  • False Virginia Creeper (Parthenocissus inserta)
  • Virginia Creeper (Parthenocissus quinquefolia)
  • Three-cornered Garlic (Allium triquetrum)
  • Montbretia (Crocosmia x crocosmiiflora)
  • Water Primrose species (Ludwigia spp.)
  • Rhododendron (Rhododendron ponticum)
  • Giant Rhubarb (Gunnera tinctoria)
  • Japanese Rose (Rosa rugosa)
  • Purple Dewplant (Disphyma crassifolium)
  • Water Lettuce (Pistia stratiotes)
  • Duck Potato (Sagittaria latifolia)
  • Curly Waterweed (Lagarosiphon major)
  • Waterweeds (Elodea spp.)

Contact us today to discuss your invasive non-native species survey needs

We can help with all of your invasive species survey and management requirements get in touch for your free quotation

  • Walkover surveys.
  • Site audits.
  • Biosecurity risk assessments.
  • Management plans.
  • Supervision & Ecological Clerk of Works (ECoW).