If large enough, they'll even hold a mini-garden in them for an entire gardening season. Fresh salads will start to appear on our table in a month or two from these wonderful pots. I like these pots because they allow good drainage through the pot wall. They are also light enough that I can sow them inside and move them outside when the weather warms up. The third choice is the ubiquitous plastic pot.
Plastic pots are good because they hold moisture longer than any other type of pot.
This is good if you don't water very often - the pot will help. The pots with self watering systems are also useful if you are a lazy waterer. These pots do not assist drainage in any way. Plastic pots are bad because they heat up more in the summer - this can cause root damage and gardeners have to be very careful of where they place the darker coloured pots. High root zone temperatures stop or kill plant growth and this is definitely not what the plant doctor would recommend.