Irrigation options for raised planter

[warrenk]

Hi all,

I’ve built a couple of raised planters using https://www.workshop.bunnings.com.au/t5/How-To/How-to-build-a-raised-garden-bed/ba-p/29674 as a guide and I had a question about irrigation options.

There’s existing irrigation in the garden bed that uses a 4mm flex tube and some risers and I’ve run the flex tube up the planters but I’m not sure what sort of sprinklers I would attach as my planters are only about 350mm wide so I don’t need a large radius of coverage.

This is what the planters look like. The smaller bed I was thinking to try growing some herbs and the larger one either some succulents or native plants.

Any advice would be greatly appreciated.

[warrenk]

One other question that’s slightly related. I was looking looking at using some pre-oiled merbau to finish of the top of the planters (something like https://www.bunnings.com.au/70-x-19mm-2-7m-pre-oiled-merbau-solid-screening_p0517075) and I was wondering if there would be any issues with that being near food and the oil ran. I read the safety sheet and it says it’s non-hazardous but I don’t know how that would relate to leaching into the soils.