This Moisture Meter comes with a 20 cm / 8” long probe: Thus, you can measure the moisture close to the bottom or in the core of the compost and not just superficially. The Meter will indicate Moisture Content on a Scale from 1 to 4. With the Moisture Meter, you prevent overwatering, which may be particularly hazardous with potted plants, and you make sure that your compost does not merely rot, but actually starts cooking. Runs without batteries!
How should moist be?
Annuals / Biennials 1-2
Shrubs (foliage) 1-2
Shrubs (flowering) 2-3
The Moisture Meter comes with indications for more than 100 plants.