3 Water Check strips.
A convenient way to keep tabs on the watering needs of your plants. Leave-in test strips constantly measure moisture levels in pots and planters, instantly telling you when to water. Ideal for all kinds of plants, in any size container. Use one per container.
How Do They Work?
Simply push the pointed end of the strip into the soil about midway between the stem and the edge of the pot, then water thoroughly. In a few minutes, the indicator strip will change from white to green. Leave the strip in the soil. As the soil dries out, the indicator strip will become blotchy as it changes from green to white. When it changes to white, plants should be watered.