Gardens Aphids on water plants
do I deal with Aphids on my water plants?
standard answer is to hose them off and let the fish eat them. But
some fish seem particularly uncooperative in this regard! I usually
wipe the pests off with a damp sponge. If you have a bad problem,
you should remove the plants from the pond, spray with spraying
oil and leave them sitting in fresh water for a few days before
returning them to the pond.
Others recommend spraying
with oil in the pond. I am dubious about this, as it tends to sit
on the surface and inhibit gas exchange.
Gardener, Issue 88, 2001, Page 22
Reproduced with permission from the former Weekend Gardener magazine. The views expressed here are not necessarily those of the RNZIH.