My superpower is killing plants. I have a month old well water filled epdm lined pond; 10 by 5 ft by about 2.5 ft at deepest point in zone 5 and it gets full sun throughout the day. Air temps here have been ranging in 40s-70 F for past week or so. This week I added about half a gallon bag full of azolla (from Arizona) and it mostly turned brown and appears to have died with only a few stray green spots left. At the same time I added some hornwort and bacopa, garden soil does run off into the pond at times but otherwise nothing else added. I'm not sure if I just shocked it or did something else to cause it to decide it didn't want to live in Michigan, does anyone have any experience with azolla/any ideas ?
You do not have to be good.You do not have to walk on your knees For a hundred miles through the desert, repenting.You only have to let the soft animal of your body
love what it loves. -Mary Oliver
Azolla cannot survive winters with prolonged freezing, so is often grown as an ornamental plant at high latitudes where it cannot establish itself firmly enough to become a weed. It is not tolerant of salinity; normal plants can't survive in greater than 1-1.6‰, and even conditioned organisms die in over 5.5‰ salinity.