Not green water! I havnt had a problem with green water this year (only string algae way back when) probably due to vigorously overgrown bog that I have. I couldnt see a lot of my other plants anymore... the dollarweed (pennywort?) are taking over! I do not want this many of them next year as I really do want more flowers. My question is, how winter hardy these pennywort are! I'll try to yank them out as much as possible but they are quite persistent and ran through other plant roots and it's hard to actually take them all out. I'll move them to the part where they cant really take over like this Any tips of getting rid of them?