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Water Lily Pests & Problems

By: Tetra Pond Products
Just like fish, pond plants may at times suffer from various health problems. The following table will help you identify and resolve some of these. Following these simple tips and using suitable aquatic products will ensure that you are able to create a beautifully planted pond with the minimum of trouble.

Water lily crown rot

SYMPTOM: Sudden blackening of leaves and flower stems. Rootstock goes gelatinous and foul

ACTIONRemove all affected plants and destroy them

Water lily aphid

SYMPTOM: Small, black aphids on lily leaves.

ACTIONSpray nearby fruit trees in the winter with an ovicide to kill eggs. Knock aphids into water with hose where fish can eat them

Water lily aphid

Water lily beetle

SYMPTOM:  Small dark brown/black beetles, and tiny black larvae on lilies. Causes disfigurement of leaves.

ACTIONKnock beetles into water with hose. Tidy up pond side vegetation during winter.

Snails

in particular greater pond snails (Lymnaea stagnalis)

SYMPTOM: Jelly-like masses appear on leaves, plants eaten away

ACTIONFloat lettuce on water, remove when covered in snails

Lily snail damage

Water lily leaf spot

(in particular greater pond snails)

SYMPTOM: Dark patches on surface of leaves

ACTIONRemove affected leaves and discard.

Water lily leaf spot

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