Outdoor lighting in the Houston area works in tough conditions: summer heat, constant humidity, sprinklers, heavy rain, hurricane-season storms and plants that keep growing for most of the year. None of that means a system has to look tired after a few years. A short seasonal routine, most of it done with a soft cloth and a walk around the yard after dark, keeps it looking the way it did on day one.
Before you start
Low-voltage systems are safe for basic homeowner maintenance like cleaning lenses, re-aiming fixtures and trimming plants. A few rules still apply:
- Turn the system off at the transformer before opening fixtures or handling connections.
- Leave the 120-volt side alone. Outlet, breaker and transformer internal work belongs with a licensed electrician or a lighting professional.
- Do your inspection walk after dark. Problems that are invisible at noon are obvious at 9 p.m.
Key takeaways
- Clean lenses at least twice a year; sprinkler hard water is the most common cause of dim fixtures.
- Re-aim and trim seasonally, especially from spring through early fall.
- Check the timer after every power outage and at each daylight saving change.
- Prepare before storms and inspect afterward.
Spring checklist
Spring is the big reset. Plants are surging, and anything the winter knocked loose shows up now.
- Do a night walk. Note every fixture that is out, dim, flickering or pointed at the wrong thing.
- Clean every lens. Wipe with a soft cloth and water. For white mineral film from sprinkler overspray, a diluted white vinegar solution usually lifts it; rinse and dry afterward. Avoid abrasive pads that scratch the glass.
- Trim plantings. Cut back shrubs, liriope and groundcover that have grown over path lights and uplights. A fixture buried in foliage just lights the leaves in front of it.
- Re-aim fixtures. Mowers, edgers, dogs and kids nudge fixtures all year. Restore the original angle so beams hit the wall, column or canopy they were placed for.
- Check sprinkler heads. Adjust any that spray directly onto fixtures or the transformer.
Summer checklist
Summer in Southeast Texas means peak growth, peak heat and the start of hurricane season on June 1.
- Trim again. St. Augustine runners, crape myrtle suckers and bed plantings can cover a fixture in a few weeks.
- Re-aim after mowing. Weekly mowing is the most common reason path lights lean and uplights drift.
- Check tree-mounted fixtures. Tree lights in live oaks and pines should be attached with growth loops, slack left in the cable and adjustable mounts, so the tree can grow without strangling the wire. Loosen or reposition mounts as needed.
- Look inside the transformer. Fire ants are drawn to warm electrical enclosures and can pack a housing or fixture with soil and nest material. If you find a nest, keep the system off and treat around the area with a product labeled for use near electrical equipment, or call a pro to clean it out.
- Prepare for storms. See the storm section below.
Fall checklist
Fall brings shorter days, the end of daylight saving time and, for many homes, more evenings spent outside.
- Reset timers for the time change. Daylight saving ends on the first Sunday in November. Astronomical timers and most smart controls adjust automatically; mechanical timers do not.
- Review schedules. With earlier sunsets, a fixed-time timer may now be switching on well after dark. An astronomical timer or our sunset timer planner helps you set sensible hours.
- Clear leaves and pine needles. Loblolly pine needles and oak leaves collect on top of in-ground well lights and around path light bases.
- Check connections. Look for green or white corrosion at splices and sockets. Corrosion causes flicker and fixtures that work one night and not the next.
- Re-bury exposed wire. Rain and settling soil expose cable along bed edges. Cover it back up before it gets cut by an edger or aerator.
Winter checklist
Winter here is short, but it is a good time to look at the system with the leaves off and the beds cut back.
- Look at the design. With deciduous trees bare, check whether uplights still frame them well, and whether any fixture is now creating glare into windows.
- Inspect the transformer. Check that the cover closes, the photocell is clean and not shaded by new growth, and the outlet's in-use cover is intact.
- Check after freezes. Hard freezes are uncommon but do happen. Afterward, look for cracked lenses and fixtures that stopped working.
- Plan upgrades. If parts of the system are halogen or failing, winter is an easy time to plan an upgrade. Our halogen to LED guide covers what to check.
Timers and power outages
Any time the power goes out, check the transformer timer. Mechanical dial timers lose time during an outage, and some digital timers without battery backup reset entirely. If your lights start coming on at 3 p.m. or not at all, an outage is the usual cause. Smart and astronomical controls generally recover on their own, which is one of the strongest arguments for upgrading.
Storm prep and post-storm inspection
From June through November, keep an eye on the forecast.
Before a storm
- Switch the system off at the transformer if flooding or a direct hit is expected.
- Remove or secure anything that could become debris near fixtures.
- Note which fixtures sit in low spots that pond in heavy rain.
After a storm
- Walk the property in daylight. Look for crushed fixtures, broken lenses, torn cable and tree fixtures damaged by falling limbs.
- Clear mud and debris from in-ground fixtures and drains.
- Once safe, turn the system on after dark and note which fixtures are out or flickering. Water in a fixture or a connection is the usual culprit.
- Reset the timer.
When to call a professional
Most of the checklist is homeowner-friendly. Call for help when you see:
| Symptom | Likely cause |
|---|---|
| Whole zone out | Tripped transformer breaker, cut cable, failed connection or timer fault |
| Fixtures dim at the end of a run | Voltage drop, wrong tap, or a corroded splice |
| Flickering that comes and goes | Corroded socket or splice, water in a fixture |
| Transformer hot, humming or tripping | Overload, failing transformer or a short in the field |
| Repeated lamp failures | Overvoltage, heat or moisture |
Our landscape lighting repair service diagnoses these with a meter rather than guesswork. If dim fixtures are the issue, our article on transformer sizing and voltage drop explains what is going on. Spring Landscape Lighting can also set up a seasonal maintenance visit so you do not have to keep track of it yourself; get in touch to ask.
Frequently asked questions
How often should landscape lighting be maintained?
A quick check each season works well in the Houston area. Clean lenses at least twice a year, trim and re-aim fixtures through the growing season, and check the timer after outages and time changes.
How do I clean hard water spots off landscape light lenses?
Turn the system off, then wipe the lens with a soft cloth and a diluted white vinegar solution. Rinse with clean water and dry it. Adjusting sprinklers so they stop spraying the fixtures prevents the spots from returning.
Why do my landscape lights come on at the wrong time?
Usually a power outage reset a mechanical or basic digital timer, or daylight saving time changed. An astronomical or smart timer adjusts to sunset automatically and handles both situations.
Should I turn off landscape lighting during a hurricane?
If flooding or severe weather is expected, switching the system off at the transformer is a sensible precaution. If the transformer or its outlet went underwater, have an electrician inspect it before turning it back on.
What do I do about fire ants in my landscape lighting transformer?
Turn the system off and keep clear of the nest. Treat the area with a product labeled for use around electrical equipment, or have a professional clean the enclosure, since ants can damage connections.
Spring Landscape Lighting
Landscape lighting designers serving Spring, Klein, The Woodlands and North Houston. Questions about your property? Get in touch.
