Sub-irrigated system illustration & planter box CAD model.
Lumber:  10′ 2×6,  8′ 2×4,  8′ 1×4,  8′ 2×2 Douglas Fir.
Side walls attached using 2×2 cleats.
3″ casters, floor jigsawed to fit, and pocket-holes for top cap.
Corner caps pocket-holed together then primed & painted. Redwood stain.
4″ perforated drain pipe with landscape fabric ends. 14mm pond liner trimmed & stapled.
Soilless raised-bed mix with perlite necessary for sub-irrigated wicking.
6 to 7 1.5cu-ft bags of soilless mix. 1″ PVC input & 1/2″ PVC overflow. ~3.5″ of water. Holds up to 15 gallons.
Tomato varieties: black cherry, berkeley tie-dye, amana orange, new girl.
April – July growth
Corner Boxes & Railing Planters
Same cleat system for corner boxes using 2×6 scraps.
Mitered & pocket-holed top caps.
Additional redwood railing planters mitered & pocket-holed.
Redwood stain (better on redwood vs douglas fir).
First planting & watering early April.