Helen's Garden Renovation Project

Tuesday 20 August 2013

The watercress approach to algae

Filed under: Pond — Helen @ 8:15 pm

Today I decided it was time to do something about the hideous algae in my pond.

Horrible slimy algae all over my pond

Horrible slimy algae all over my pond

In case that was not sufficiently disgusting for you, here is a close-up version:

Close-up of algae in pond

Close-up of algae in pond

At least two people have told me to chuck watercress in it, and one was my mum, so I went to Sainsbury’s and bought some. I was thinking of just throwing it in as it was, but I thought it would be tidier to put it in pots full of gravel, so that is what I did. And then I chucked the rest of the bag into the shallow pond, loose. The algae in the shallow pond is just as bad as the algae in the raised pond. People say that the watercress roots very quickly and easily. If it is invasive, it will be easy to empty out the shallow pond and start again. The raised pond would be harder to deal with.

Bag of watercress from Sainsbury's. Do not eat it after growing it in the pond.

Bag of watercress from Sainsbury’s. Do not eat it after growing it in the pond.

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