Friday, July 23, 2010
Why are my water lilies brown?
Hi, I have a koi pond and my water lilies are turning brown. My koi are doing very well. My water is very clear. I use Barley in my pond. Can you give me some advice.
Thank you, Mike R.
Lilies grow best in water that is 18"-30" deep. If planted in water that is too shallow the leaves will dry out. In the correct water depth and during the growing season, water lily leaves will turn brown and then will produce new leaves again. Lilies do go dormant in the fall and then come back again in when the weather warms in the spring time.
Lilies need to be fertilized in the spring and summer. In order to produce new leaf growth and flowers, lilies need to be fertilized once per month with 2 good quality fertilizer tabs throughout the season. If the wrong fertilizer is used or if fertilizer is used incorrectly this will burn the leaves and the entire plant.
There are not any pests that can turn the leaves a brown color. The most common pest is the garden slug and snail. This is evident by the nibble marks on the leaves. Koi will also munch on the water lily pads, but I do not think this is why the leaves are brown.
Try taking your lilies out of the water to make sure they are not rotting for some reason. This is evident by a pungent smell. If this is the case then repotting is needed.
Garden Blessings, :-) GAiL
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