How to set up irrigation in your backyard

With the growing population moving to smaller homes and utilising balcony’s and courtyards to grow, it is becoming more important to have automated irrigation set up to help managing watering your thirsty plants.

We have a cheap, easy and convenient option that will save you time. Yes, precious time!

You can purchase electronic timers, which can range from $40 to $170. The costs vary based on the number of stations you need, how weatherproof it is and programmability. Some of the more advanced options now have misting timers for tropicals and ferns.

How to assemble

Fit adaptor to tap.
Fit timer to one outlet, leaving the other free for other uses.
Lay 19mm hose behind pots/along walls.
Starting at tap timer, cut poly to length and join with click-connectors/elbows/tees. Connect flush valve to end of line. Cinch ratchet clamps.
Using attached barb, connect shrubbler to one end of 4mm poly (for larger pots, use 2 shrubblers and a 4mm tee).
Position in pot, then run 4mm to 19mm, allowing 100-150mm play.
Cut 4mm, punch hole in the 19mm pipe and connect the two using the detachable barb from the shrubbler. Locate the hole behind the pot, preferably shaded from direct sun: heat may sufficiently soften 4mm line to separate under pressure. Buried line is ideal. If joins are exposed to sun, water early in the morning before plastic softens.

Initial Start Up

To establish correct water flow start with well-watered pots in which mix is uniformly moist. If they’re difficult to wet with a hose or watering can, shrubblers won’t either. Such hydrophobic mixes benefit from a good soak and an application of a wetting agent.
Next, fully close adaptor and open shrubblers three quarters. Open manual flush valve.
Fully open tap. Open adaptor half (for a few pots) to two thirds or fully (more pots).
If using a manual flush valve, close it.
Next, adjust spray diameters and shrubbler placement.
Depending on water pressure, line length, relative elevation and number of shrubblers in your system, fine tune with the adaptor and individual shrubblers so each pot receives right amount of water in the same time period (reduce flow in small pots, increase in larger ones). Shrubblers should spray the surface of the mix, not hit sides of the pot. Adjust the timer: aim to have a small quantity of water running from the bottom of every pot when the timer switches off.
Set the timer to water daily, twice daily, every few days or weekly depending on plants, pot size and season. Initially, check pots often to calibrate frequency. Small pots need more frequent watering with a shorter duration.