Does anyone know anything about greenhouse irrigation please?

[DareIask]

I'm looking for an easy (and preferably cheap) way to irrigate pots etc while we go away.

We have really food neighbours but don't want to take advantage of their willingness

sprinkler?

We have a Hozelock system, but they’re not cheap, although you can add to them as you go along.
Before that we used capillary matting to stand seed trays on. A wick linked into a bucket of water kept the matting damp. We also used the watering spikes on old plastic bottles. I didn’t find them very successfully.