My water hyacinths did well at first, then all died or were heading that direction. I'm wondering if it was the extreme heat we had so early. Maybe your more temperate climate in Massachusetts is easier on them. Anyhow, saved a few, put them in very large pots intended for lotus (which had died), and voila, they all grew and bloomed. I also had blooms yesterday, but of course we are much warmer I would guess than you this time of year.
Thanks for sharing your pond pics! Loved them!!!
We had a heck of a time with the water hyacinths this year. They did really well at first, then the heat hit. I thought we were going to lose them, the heat was so brutal on them, so I threw about half up into the upper pond (gets a hint of shade) and they bounced back, so kept rotating them LOL.