yeah you can get a hose timer....and then another hose and from that install your drip lines....like this
rain catch/hose/timer/hose/drip system....
you need a good digi timer like this http://www.amazon.com/Orbit-91213-One-Dial-Garden-Digital/dp/B001RCTWZE/ref=sr_1_1?ie=UTF8&qid=1336066861&sr=8-1