I would suggest you run a line of low density tubing, probably 5/8" (16mm), alongside all of the plants and insert an online emitter at each plant. Don't forget to put a filter in.

--Previous Message--
: I need some help determining type of
: irrigation system to install in several rose
: beds for a total of around 300 rose bushes.
: I am interested in either drip irrigation or
: micro sprays. Please respond.
:
: Thanks, Mark
: