Joanie

The fired clays (Turface, etc) do dry on the surface very quickly, and can still be wet underneath. Two other methods of knowing when to water are:

1. Stick your finger into the soil up to the second knuckle, you can feel the moisture.

2. Feel the weight of the pot before and after watering. It's easy to tell whether it is wet or dry. But in this case, dry may be too dry.

At least you won't hurt them if you water them every day. The water drains extremely well in this sort of soil.

Your moisture meter is unable to measure the conductivity between the soil particles because it is too well draining. They don't work in this situation.

Joanie

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