Tim Fitzharris / Reeds in Sweet Bay Pond, Everglades National Park, Florida

Will Watson / Blue-green algae (Cyanbacteria), Gipsywort (Lycopus europaeus), Reed Sweet-grass (Glyceria maxima) and Common Nettle (Urtica dioica) growing along edge of Great Wyrley & Essington Canal, Staffordshire...

Tim Fitzharris / Reeds reflected in Sweet Bay Pond at sunrise, Everglades National Park, Florida

Will Watson / Worcester cathedral, meadow and ditch with Meadowsweet and Reed canary grass, England

Will Watson / Worcester cathedral, meadow and drainage ditch with wild flowers, England Purple

Linda Pitkin / Reed sweet-grass (Glyceria maxima), at edge of pond, Clandon Wood, Surrey, England, UK, July.