HAVE a water lily in my garden pond that appears to be unwell. It
regularly produces new leaves, but each one only lasts for a few
days before rotting. The pond is 40cm deep and has an area of 2sqm.
It also has a small waterfall.
lilies need plenty of sun to grow well, and rotting of new growth
could be caused by lack of light. If the pond is shaded you may
need to prune nearby shrubs to let more light through to the water
At 40cm deep, the water
is also too shallow for large-growing varieties of water lilies
but should be fine for miniatures, so check the label to see what
type you have.
To reach their full potential
water lilies also need plenty of fertiliser. In nature they feed
from the debris on the pond floor but in garden ponds you usually
need to feed them with slow release fertilisers specially formulated
for aquatic plants. Look for brands such as Pondtabbs distributed
by Wright's Water Gardens, Patumahoe, or Jobes Fertiliser Spikes
for Aquatic Plants available at most garden centres.
Gardener, Issue 141, 2004, Page 22-23
Reproduced with permission from the former Weekend Gardener magazine. The views expressed here are not necessarily those of the RNZIH.