View Single Post
  #1   Report Post  
Old 28-08-2011, 01:39 AM posted to rec.ponds.moderated
Phyllis and Jim Phyllis and Jim is offline
external usenet poster
 
First recorded activity by GardenBanter: Dec 2006
Posts: 880
Default Yellowing hyacinths

After a great start, my hyacinths are going yellow. They live in my
berm pond. In previous years, they have thrived and grown to 18".
This year they covered the 4 x 8 pond and stopped at 4". Then they
turned yellow.

My observations:
1. I have water lettuce in the other berm pond. It grew to cover the
pond and is 5" deep. Maybe the hyacinth can't compete.
2. My pond water is perfectly clear this year (and the usuao tea
color). That is unusual and suggests little nutrition for the stuff
that used to clog it.
3. The water lettuce has also grown little this year.
4. I tossed some of the hyacinth in my shallow pond below the falls.
The pond has muck in the bottom. The hyacinth turned dark green.
5. I put some of the green hyacinth back into the berm pond. It
yellowed.

Conclusion: Low to no nutrients in the water or the hyacinth can't
compete with the lettuce.

Other ideas?