Water line for garden?

[rainylakefisher]

I live on a well/septic lot in Dayton. I want to run a dedicated underground line from my pump to my garden to have water available at all times and avoid dragging hoses all over. I need advice and input regarding a couple of things:

I was planning to use 1" polyethylene piping with six separate heads (one in each corner of the garden and one in the middle of each long side.

I would use one main valve to control flow (near the garden) and valves on each post to control each head on/off. I would have a spigot on two opposite corners for hose connections.

I am concerned about winterizing as a big air compressor is not in the plans. The planned route goes over a small hill so about 2/3's of the piping should gravity flow towards the garden. I was planning to add a cap at the end of the system to drain in autumn. How do I get the water out of the first third that drains back to the house? Full basement with pump controls in lower level.

How hard is it to connect to the existing system?

Any other ideas?

[Fireman1217]

You could put a T with a cap inside your house so that you could remove the cap and let that part drain.

[crothmeier]

it doesnt take a gigantic compressor to drain them out. We've winterized entire houses on a pancake compressor. put a removable cap and a shutoff in the house. hook the compressor up at one of the garden spigots and blow it all back into the house, assuming there is a drain nearby, otherwise reverse and blow towards the garden. Leave the spigots in the garden open over winter.