these boxes reduce watering needs and can cost you upwards of $60 at a nursery. i'd check them out, tho, the professional ones just to see where they'...
materials: rubbermaid tub; 1/2" pvc pipe approx 18" - 24" long; six plastic flower pots (the kind your plants come in when you buy them) of the same size, dremel or small saw or big scissors, dirt, water, nail or drill, plastic garbage bag, granular fertilizer.
Step 1: Step 1
an earth box is basically a big tub with a water reservoir in the bottom. i used a BIG rubbermaid tub i bought on clearance in january for next to nuthin' at walmart. you'll need six pots or so, the plastic kind plants come in when you buy them, to be the support under the floor of the box. take the lid and trace around the mouth of the pots on opposite diagonal corners. also make a small circle the circumference of the pvc pipe.