What you need for an automated irrigation system in raised-bed vegetable gardens (and the cost)
PVC Drip Irrigation
Cheap and brilliant irrigation system!!
Irrigation for Raised Bed Gardening
Ingenious watering ideas. I would brace it against the box so water flows up to make a better drain out when off.
Irrigation solution for pots - Multi-outlet emitter - Drip Watering - Sunset
Raised beds for gardening
Great way to use Rain water to irrigate gardens
Build your own PVC Drip Irrigation System
How To Effectively Use Soaker Hoses In The Garden -