Irrigation and outdoor lighting cover two separate trades that often get bundled together because the same crews run the wiring and piping. Irrigation work means designing and installing an underground sprinkler system: zoning the lawn and garden beds, running poly pipe, setting rotor and spray heads, tying into a backflow preventer, and programming a controller. Outdoor lighting covers low-voltage fixtures for pathways, steps, garden beds, and uplighting on trees or the house facade, along with the transformer and wiring that ties it all together. Mississauga's clay soil and freeze-thaw winters make both jobs more demanding than they look: pipes need to sit below the frost line or be blown out every fall, and wiring has to be buried deep enough to survive aerating and planting.
When you're comparing contractors, ask whether they pull permits where required, how they handle spring start-up and fall winterization, what brand of controller and heads they install (parts availability matters later), and whether lighting fixtures are brass or aluminum rather than cheap plastic that clouds and cracks within a couple of seasons. Get a zone-by-zone breakdown of the irrigation design, not just a lump sum.
We score the 12 businesses in this category on factors like licensing, response time, warranty terms, and verified customer feedback. Our full methodology explains how each score is built. For the ranked list, see the best landscapers in Mississauga guide.