Go to Lowe's or another big box store and look at drip irrigation systems. They are not usually in the lawn and garden section, they are in plumbing by the other in-ground sprinkler systems. You can get a starter system for cheap, and then add on to it over the next few years, or, you can buy the whole shooting match at once.
Anyway, I ran a flexible poly pipe all the way around my house and also tee'd it off several times to flower beds, deck, patio, etc....
From the poly pipe you have a little poker tool that pokes a hole in the pipe with your hand. You push in a connector, push a small rubber hose onto the connector, run the small hose next to your plant, shrub, flower pot, etc.... and put a head on the end of it. I use adjustable drippers. Dial in the amount of water you want coming out and off you go.
I have mine on a cheap battery operated timer, so my flowers get watered for 20 minutes once a day and my garden gets watered for an hour.
Anyhow, I have about 100' of poly pipe, 200' of the small rubber hoses, 50-60 heads of various drip and spray, and another 200' of poly pipe burried out to the garden. I spend about 20-40 dollars a year adding more to the system, always expanding it. It waters my flower beds, shrubs, hanging baskets, flower boxes.... heck I even have it filling my bird bath daily.
Here's a link to Lowe's stuff, but its available at many other places. Its worth checking out.
Shop Drip Irrigation at Lowes.com!
