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Algae Problems

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Problems - Algae

Algae can be a problem if the soil is wet for a long time after watering. For me, this happens to pots which I put inside plastic propagators, or to pots which are placed on trays in order to prevent pots from drying out too fast. Algae almost always start to grow quickly on soggy soil.

An Euphorbia with a serious algae problem. This is almost never fatal, but it looks ugly on any pot. When dry, the algae will form a layer on top of the soil which hinders the flow of water down to the soil.

Sometimes the coat of algae can be scraped off if it's thick enough. Plants with algae aren't going to die, but the green stuff may be choking the roots, or taking up nutrients meant for the plant, or preventing proper drainage.

Algae is a more serious problem in aquaculture, if you are haphazard in preparing your containers. If you use opaque plastic, you will probably have no algae problems, but if you use translucent plastic boxes and paint them over, then eventually the paint will flake away and algae will take hold in the box.

In aquaculture, algae can thrive even with the slightest bit of sunlight. If the algae coat the roots of the plants, the plants' growth will be checked; succulents may rot. Algae choke the roots -- so avoid them in your aquaculture boxes.


Remedies

To summarize, here are some helpful hints:


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  Last modified: 2002-10-04  Copyright © 1997-2002.  Kein-Hong Man.  all rights reserved