A year ago, we redid our yard and put in a nice vegetable garden. It's got two raised beds about 3 x 8 and a bunch of pots. I bought my wife a drip irrigation system so that watering would be easier and so that the garden can live through our frequent summer vacations. We're totally overwhelmed by the drip system though, and it's been in the box for a year now. We're getting tired of asking the neighbors to water the veggies (as are they, I'm sure), so it's time to get this thing in!
The biggest issue we're running in to is not knowing how to design for different water flow. We've got all sorts of attachments so that different plants can get different amounts of water at different heights, etc. I don't understand which types are best for what kind of plants. And even then, we plant different plants all year long and then rotate the plants from year to year. How do you design this so that the irrigation system isn't out of date as soon as the season changes or the next one year rolls around?