Herefordshire Amphibian & Reptile Team

Ponds - Invasive Pond Plants

A number of vigorous alien water plants have escaped into the countryside and are causing serious problems to native plants and animals. Four of these in particular need to be especially watched out for, and if found seek expert advice:

  • New Zealand Stonecrop (Crassula helmsii);
  • Fairy Moss (Azolla filiculoides);
  • Parrot’s Feather (Myriophyllum aquaticum);
  • Floating Pennywort (Hydrocotyle ranunculoides).

Pictures are provided by the Centre for Aquatic Plant Management.

The following leaflets on these and other water plants are available from the website of the Centre for Aquatic Plant Management www.capm.org.uk.

  • 3 Control of algae with barley straw
  • 4 Reeds Rushes & Sedges
  • 5 Himalayan Balsam
  • 6 Giant Hogweed
  • 7 Japanese Knotweed
  • 8 Fringed Water Lily
  • 9 Canadian Pondweed
  • 10 Spiked Water Milfoil
  • 11 Fennel Pondweed
  • 12 Curled Pondweed
  • 13 Broad-leaved Pondweed
  • 14 Australian Swamp Stonecrop
  • 15 Water lilies
  • 16 Stoneworts
  • 17 Poison Hemlock
  • 18 Unbranched Bur-reed
  • 19 Water Starwort
  • 20 Floating Pennywort
  • 22 Fools watercress
  • 23 Water Parsnip
  • 24 Water Fern
  • 25 Duckweeds
  • 26 Horsetails
  • 27 Parrots Feather
  • 28 Nuttalls Pondweed
  • 29 Chemical control of algae
  • 30 Branched bur-reed
  • 31 Rigid Hornwort
  • 32 Marestail
  • 34 Hemlock Water Dropwort
  • 35 Curly water thyme

 

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