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Plant Doctor Archive
Water Gardens — Planting water lilies

WHY
have I been told to plant my water lilies in clay? I cannot see
how they can grow in this!
HOPEFULLY you were told to use
clay loam, which is different to clay. This misunderstanding is
quite common.
A clay-based soil will hold nutrients at the root zone and not release them in to the pond water, where they will only encourage algae. Sandy soils tend to release nutrients.
So you are quite right. You will only end up with a messy pond and sad plants if you plant into straight clay.
Weekend Gardener, Issue 89, 2002, Page 20

