Not advisable to plant:
Order
Schedule 9 Schedule s s
Notes
weed
potentially too invasive too potentially value low/no Noxious Order Wildlife Pirri-pirri Burr (Acaena 'Blue Haze') 1 1
Pirri-pirri Burr (Acaena microphylla) 1 1
Pirri-pirri-bur (Acaena novae-zelandiae) 1 1
Cappadocian Maple (Acer cappadocicum) 1
Japanese Maple (Acer palmatum cultivars) 1
Chocolate Vine (Akebia quinata) 1 1
Few-flowered Leek (Allium paradoxum) 1 1
Three-cornered Garlic (Allium triquetrum) 1
Grey Alder (Alnus incana) 1
Dwarf Serviceberry (Amelanchier spicata) 1
Cape Pondweed (Aponogeton distachyos) 1 1
Giant Reed (Arundo donax) 1 1 1
Spotted-laurel (Aucuba japonica) 1 cited as having wildlife value by BTO but only for structure. 'Rozannie' may be OK
Wild-oat (Avena fatua) 1 1
Common Oat (Avena sativa) 1 1 1
Water Fern (Azolla caroliniana) 1 1
Water Fern (Azolla filiculoides) 1 1 1
Butterfly-bush (Buddleja davidii and davidii cultivars) 1 In areas with semi-natural scree
Carolina Water-shield (Cabomba caroliniana) 1 1 1 aka Fanwort
Hottentot Fig (Carpobrotus edulis) 1 1 Attractive to pollinators
Spotted Knapweed (Centaurea biebersteinii) 1
Knapweed (Centaurea jacea) 1 Genetic drift - hybridises with nigra
Bitter Bush (Chromolaena odorata) 1 1
Creeping Thistle (Cirsium arvense) 1 High wildlife value
Spear Thistle (Cirsium vulgare) 1 high wildlife value
Dogwood (Cornus stolonifera) except in variety 1 1 esp in damp habitats. aka sericea. wildlife value
Hollyberry Cotoneaster (Cotoneaster bullatus) 1 1 high wildlife value
High wildlife value. One of the busiest shrubs - Wall Cotoneaster (Cotoneaster horizontalis) 1 1 NIEA recommended, RHS perfect for pollinators, but spreads aggresively by seed Small-leaved Cotoneaster (Cotoneaster integrifolius) 1 1 Has wildlife value. Aka S thymifolius, Probably sold as C. microphyllus
Simon's Cotoneaster (Cotoneaster simonsii) 1 1 Has wildlife value
New Zealand Pygmyweed (Crassula helmsii) 1 1 1
Montbretia (Crocosmia x crosmiflora unless in variety) 1 1
Except native Juniper. May still be useful for acoustic/visual screening. Cypresses (Cupressaceae) all species and cultivars 1 Recommended by BTO Purple Dewplant (Disphyma crassifolium) 1 1
Water Hyacinth (Echornia crassipes) 1 1
Giant Elodea (Egeria densa) 1 1 1
Water Hyacinth (Eichhornia crassipes) 1 1
Russian Olive (Elaeagnus angustifolia) 1 1 but RHS PfP listed
Oleaster (Elaeagnus pungens (or E. x ebbingei) 1 but RHS PfP listed
Autumn Olive (Elaeagnus umbellata) 1 1
Pond Weed (Elodea species) 1 1 1
Spindle Tree (Euonymus fortunei) 1
Variegated Euonymus (Euonymus 'Green 'n' anything') 1
Japanese Spindle (Euonymus japonicus) 1 Recommended by BTO
Leafy Spurge (Euphorbia esula) 1 1
Black-bindweed (Fallopia convolvulus) 1 1
Japanese Knotweed (Fallopia japonica) 1 1 1 1 Good nectar source Hybrid knotweed (Fallopia japonica x sachalinensis) 1 1 aka F x bohemica
Giant Knotweed (Fallopia sachalinensis) 1 1 1
Forsythia (Forsythia x intermedia) 1
Fuchsia (Fuchsia magellanica) 1 wildlife value, but likely to spread unacceptably unless managed. RHS PfP listed
Crane's-bill (Geranium procurrens) 1 wildlife value, but likely to spread unacceptably
Reed Sweet-grass (Glyceria maxima) 1 1
New Zealand Broadleaf (Griselinia littoralis) 1
Brazilian Giant-rhubarb (Gunnera manicata) 1 1
Giant Rhubarb (Gunnera tinctoria) 1 1 1
Jerusalem Artichoke (Helianthus tuberosus) 1 High wildlife value, but allelopathic as well as invasive
Giant Hogweed (Heracleum mantegazzianum) 1 1 1
Sea-buckthorn (Hippophae rhamnoides) 1 1 native in parts of England. Often recommended for wildlife. Recommended by BTO
Spanish Bluebell (Hyacinthoides hispanica) 1 1 gene flow - very considerably less frequent than the hybrid
Hybrid Bluebell (Hyacinthoides x massartiana) 1 Gene transfer
Floating Pennywort (Hydrocotyle ranunculoides) 1 1 1
Himalayan Balsam (Impatiens glandulifera) 1 1 wildlife value
Water Spinach (Ipomoea aquatica) 1 1
Broad-leaved Rush (Juncus planifolius) 1 1
Water Primrose (Jussiaea grandiflora) 1
Curly Waterweed (Lagarosiphon major) 1 1 1
Hare's Tail (Lagurus ovatus) 1 1
Variegated Yellow Archangel (Lamiastrum galeobdolon 1 montanum/argentatum) Least Duckweed (Lemna minuta) 1 1
Summer Snowflake (Leucojum aestivum) 1 1
Himalayan Honeysuckle (Leycesteria formosa) 1 high wildlife value. Recommended by Natural England
Chilean Iris (Libertia formosa) ? 1
Evergreen Honeysuckle (Lonicera henryi) or variety 1
Japanese Honeysuckle (Lonicera japonica) ? 1
Wilson's Honeysuckle (Lonicera nitida) 1
Sometimes credited with wildlife value, but poor-flowering/fruiting in N I try Box-leaved Honeysuckle (Lonicera pileata) 1 Sarcococca in shade instead Water Primrose (Ludwigia peploides = grandiflora) 1 1 1
Water Primrose (Ludwigia uruguayensis) 1 1 1
American Skunk-cabbage (Lysichiton americanus) 1
Monkey Flower (Mimulus cupreus) 1 1
Monkeyflower (Mimulus guttatus) 1 1
Monkeyflower (Mimulus guttatus x luteus = M. x robertsii) 1 1
Parrots Feather (Myriophyllum aquaticum) 1 1 1
Brazilian Milfoil (Myriophyllum proserpinacoides) 1 1
Chilean Needle Grass (Nassella neesiana) 1 1
Fringed Water-lilly (Nuphar pumilla) 1 1
Fringed Water-lily (Nymphoides peltata) 1 1 1
False Virginia Creeper (Parthenocissus inserta) 1 1
Red Bistort (Persicaria amplexicaulis) except in variety 1 except in variety
Himalayan Knotweed (Persicaria wallichii) 1 1 aka Polygonum wallichii. Good nectar source
Winter Heliotrope (Petasites fragrans) 1
Water Lettuce (Pistia Stratiotes) 1 1 1
Kohuhu (Pittosporum tenuifolium) 1
Victorian Box (Pittosporum undulatum) 1 1
Mile-a-Minute Vine (Polygonum perfoliatum) 1 1 1
Cherry Laurel (Prunus laurocerasus) wild type 1 1
Zabelliana and Otto Luyken are used extensively - they at least flower 2 x in the ? Cherry Laurel (Prunus laurocerasus cultivars) ? ? season. Gajo to 1m flowers profusely Leaves and pits poisonous Cherry Laurel (Prunus laurocerasus wild genotype) 1 ? very shy flowerer in shade
Black Cherry (Prunus serotina) 1
Climber Vine (Pueraria montana) 1 1
Wild Radish (Raphanus raphanistrum) 1
Azaleas/Rhododendrons (Rhododendron cultivars), 1 1
Yellow Azalea (Rhododendron luteum) 1 1
Rhododendron (Rhododendron ponticum) 1 1
Rhododendron (Rhododendron ponticum x Rhododendron 1 1 maximum) not recommended close to semi-natural wetlands or in areas of frequent semi- Black Currant (Ribes nigrum) 1 natural wetlands False-acacia (Robinia pseudoacacia) 1 RHS recommeded nectar plant
Japanese Rose (Rosa rugosa) 1 wildlife value - RHS recommeded nectar plant
Golden Evergreen Rasberry (Rubus ellipticus)
Salmonberry (Rubus spectabilis) 1 1 has wildlife value
Curled Dock (Rumex crispus) 1
Broad-leaved Dock (Rumex obtusifolius) 1
Duck Potato (Sagittaria latifolia) 1 1
Giant Water Fern (Salvinia molesta) 1 1 1
Chinese Tallow (Sapium sebiferum) 1 1
Broad-leaved Bamboo (Sasa palmata) 1 1
Marsh Ragwort (Senecio aquaticus) 1 high wildlife value
Common Ragwort (Senecio jacobaea) 1 high wildlife value
Perfoliate Alexanders (Smyrnium perfoliatum) 1
Tropical Soda Apple (Solanum viarum) 1 1
Gray Goldenrod (Solidago nemoralis) 1
Common Cord-grass (Spartina anglica) 1 1
Water-soldier (Stratiotes aloides) 1
Snowberry (Symphoricarpos albus) 1 Wildlife value - RHS PfP listed
Creeping Comfrey (Symphytum grandiflorum) 1
Fringe Cups (Tellima grandiflora) 1
Water chestnut (Trapa natans) 1 1
Japanese Kelp (Undaria pinnatidifa) 1 Seaweed
Greater Periwinkle (Vinca major) 1 wildlife value
Lesser Periwinkle (Vinca minor) 1 wildlife value - recommended by EANI. Less invasive than V. Major
Death Camas (Zigadenus spp.) 1 pollen and nectar are poisonous to insects - plants is poisonous to humans/livestock
Dwarf Eel Grass (Zostera japonica) 1 1