Instead of running the PVC pipe to each bed, each time, I have instead run a large bore PVC pipe down each side of my entire garden area. Then at the end of each planting bed I have added a T-junction and a short pipe off to a PVC valve. When I set up a bed for watering I grab a length of the mid sized PVC pipe, attach it to the valve, stake it down so it doesn't move too much, attach all the sprinklers or heads that I need and turn on the valve.
When the bed is no longer active I can turn off the valve and disconnect the sprinkler line. The sprinkler lines get stored over some racks, out of the way, until I need it again. The next time I set up a garden bed, before I make a new sprinkler line, I check what I have stored away. Most of the time, these days, it is a simple mater of connecting an existing sprinkler line and the newly planted bed is being irrigated within 5 minutes.
The advantages of this set up are:
- I am not watering beds that don't have plants in them, or more likely only have weeds in them. This saves me water.
- It takes minutes to set up water for new plants, so they are less likely to suffer due to lack of time to water.
- It is easy to get the irrigation system out of the way for the entire garden at the start of a season so that I can hoe or slash without damaging equipment.
- The reuse of PVC pipe keeps the cost of irrigation equipment to a minimum.