We picked up a new plant last week - a little clover pot in a self-watering planter. Ground-cover plants can be difficult to water from above, since the tightly woven stems blanket the soil while water runs off the leaves. A self-watering pot waters the roots from underneath, allowing the plant to drink as much or as little water as it needs...
The planter is made of two parts: an unglazed inner pot and a larger outer pot that holds water.
The unglazed inner pot absorbs water from the large pot as the plant needs it. Because of the recent heat, our clover has been drinking a lot of water, and we've been refilling the pot every few days.
A shot from above, showing the large pot filled with water.
Our planter came from Grand Street Gardens, but self-watering pots are available at most garden stores. Gardeners' Supply sells transparent self-watering pots that allow you to see water levels without having to check the planter.