Posted by Darren on October 30, 2006 at 21:39:12:
In Reply to: "Poison" Trees and Plants posted bySteve Katz on October 30, 2006 at 08:29:20:
In considering trees, you have to think about what becomes of the leaves, flowers, etc. For the crape myrtle, you may have both flower and leaf drop. I have a Holly in the vicinity. but my pond is partially above-ground. Across the yard, there's a Texas pistache and a vitex. I do have ponds netted for heron protection. From another Texas site:
"Oak leaves, blossoms, and acorns contain various amounts of tannins and phenols which are toxic to koi (and other animals in varying degrees). The toxicity varies between species (red oak, white oak, etc.) and also from season to season. If you are able to minimize the amount of leaves, acorns, and blossoms that end up in the pond, there may be little impact on the fish. It may be more practical to move the fish (or pond) to a more suitable location."