Landscape Lighting Maintenance Checklist

A good low-voltage system is built to last, but Texas weather works on it every day: hail and freezes, 100-degree afternoons, sprinkler overspray, oak pollen and plants that double in size in a single summer. This landscape lighting maintenance checklist breaks the year into Texas seasons, adds a five-minute monthly walkaround, and finishes with a troubleshooting table so you can tell a quick fix from a job for a professional.

None of this takes long. Most homeowners can handle the seasonal items in an evening or two a year, and catching small problems early, such as a fixture knocked off aim or a green, corroded connection, keeps them from turning into a dark zone or a failed transformer.

Before You Start: Tools and Safety

You do not need much. A soft cloth, a bucket of water with a little mild dish soap, a soft brush, pruners, a flashlight, a replacement lamp or two if your fixtures use them, and a basic digital multimeter if you are comfortable using one.

Spring Checklist (March–May)

Spring is the most important maintenance season in Texas. Winter freezes and early hail are behind you, the yard is about to grow fast, and live oaks are shedding pollen and catkins that coat everything.

• Walk the system after the last freeze. Look for cracked lenses, fixtures heaved by frozen soil, and stakes pushed out of the ground.
• Inspect after every hail storm. Check lenses, shrouds, path light hats and the transformer case for dents or cracks. Broken glass lets water in and can be a hazard on walkways.
• Clean off oak pollen and debris. Live oak pollen and catkins can dull lenses and fill well lights. Wipe lenses with a damp cloth and mild soap, and clear out in-grade fixtures.
• Check for standing water in well lights. If a well light holds water, the drainage gravel beneath it may need clearing.
• Trim new growth. Cut back foliage that has grown in front of uplights or over path lights before the summer flush.
• Check aim on tree and facade lights. Winter yard work and spring mowing knock fixtures sideways.

Summer Checklist (June–August)

Summer is the season you use your outdoor spaces most and the season that is hardest on equipment. Heat, irrigation and explosive plant growth are the three big issues.

• Adjust sprinklers that hit fixtures. Daily irrigation overspray leaves mineral spots on lenses and pushes water into poorly sealed fixtures. Turn heads so they miss the lights.
• Remove hard-water spots. A cloth with a little white vinegar, then a rinse with clean water, removes most mineral film.
• Trim every few weeks. Crape myrtles, Indian hawthorn, liriope and turf can bury path lights and block uplights in a matter of weeks.
• Keep the transformer ventilated. Make sure it is not boxed in by plants, stored items or a closed cabinet in direct afternoon sun.
• Look for dim or flickering fixtures. Heat accelerates failure in weak connections and low-quality LED drivers, so problems often show up first in July and August.
• Check mulch levels. Fresh mulch should not bury fixture housings, connections or well light lenses.

Fall Checklist (September–November)

Fall is the best time to fine-tune the system. Plants have finished most of their growth, evenings are pleasant, and the holidays are coming.

• Re-aim lights after the growing season. Trees and shrubs have changed shape since spring. Spend one evening after dark adjusting angles so beams hit the canopy and walls rather than leaves in front of the lens.
• Reset timers when daylight saving time ends. On the first Sunday in November, clocks fall back an hour. Mechanical and simple digital timers need a manual reset; astronomical timers and most smart controllers adjust on their own.
• Clear fallen leaves. Keep leaves out of well lights and away from fixture housings.
• Plan holiday loads. Do not plug holiday string lights or inflatables into the landscape transformer unless it was designed for that load. Use a separate GFCI-protected outlet for decorations.
• Check the photocell. Make sure new holiday decorations or porch lights are not shining on it and confusing it.

Try it: Texas Dusk TimerSunset and dusk times for your city, with timer settings by month.

Winter Checklist (December–February)

Texas winters are mild most days, but hard freezes and ice storms do happen, and short days mean the system runs longer than at any other time of year.

• Inspect after freezes and ice storms. Look for cracked lenses, broken fixture stems and limbs that fell on fixtures. Freeze damage to lenses lets water in, which shows up as failures weeks later.
• Check run time. With sunset before 6 p.m., a timer set in summer may now turn lights off too early or leave them on longer than you want.
• Look at the transformer. Check that the case is closed, the cover is intact and the outlet bubble cover is closed over the plug.
• Prune while trees are dormant. Winter is a good time to plan tree trimming around lighting, especially for moonlighting fixtures mounted in the canopy.

The Monthly 5-Minute Walkaround

Once a month, walk the property shortly after the lights come on. It takes five minutes and catches most problems while they are small.

• Every fixture is on, and none looks noticeably dimmer or a different color than its neighbors.
• No fixture is tilted, knocked over or aimed into a window, street or neighbor's yard.
• No lens is blocked by leaves, mulch, mud or a spider web.
• Lights turned on at the right time, and will turn off when you expect.
• No exposed cable where someone could trip or where an edger could cut it.

Troubleshooting: Symptom, Cause and Fix

Annual Professional Tune-Up

Even if you keep up with the checklist, a yearly professional visit catches what is hard to see from the lawn. Whether you hire Landscape Lighting Texas or another qualified installer, a thorough tune-up typically includes:

• Measuring voltage at fixtures and adjusting transformer taps where runs have drifted.
• Opening and resealing connections that show corrosion, especially in humid and coastal areas.
• Replacing worn gaskets, cracked lenses and damaged fixture stems or stakes.
• Re-aiming and repositioning fixtures as trees and beds have matured.
• Re-burying exposed cable and checking cable under new plantings or hardscape.
• Inspecting the transformer, timer and photocell, and updating schedules.
• Recommending upgrades such as LED retrofits, added zones or smart controls.

For the technical background on taps, wire gauge and voltage drop, see our low-voltage landscape lighting guide, and use the transformer calculator below to check a run yourself.

Try it: Transformer & Voltage DropSize a low-voltage transformer and check voltage drop by wire gauge.

When to Call a Professional

• The GFCI or transformer breaker keeps tripping.
• A whole zone is out and the cause is not obvious.
• The transformer hums loudly, smells hot or shows burn marks.
• Several fixtures are corroded, filling with water or failing repeatedly.
• You want to add fixtures, move lights or change the design.
• Anything involves the 120-volt outlet, circuit or hardwired connection.

Frequently Asked Questions

How often should landscape lighting be maintained?

Do a quick walkaround once a month, a seasonal check four times a year, and schedule a professional tune-up once a year. Properties near the coast or with heavy irrigation may benefit from more frequent connection checks.

How do I clean landscape lighting fixtures?

Turn the system off, then wipe lenses with a soft cloth and water with a little mild soap. Use a little white vinegar on hard-water spots and rinse. Avoid abrasive pads, pressure washers and harsh chemicals, which can damage finishes and seals.

Why did my landscape lights stop working after it rained?

Water may have tripped the GFCI outlet, or found its way into a poorly sealed connection or fixture. Reset the GFCI first. If it trips again or a section stays dark, a connection or fixture likely needs to be found and resealed.

Do I need to change my landscape lighting timer for daylight saving time?

Mechanical and basic digital timers need resetting twice a year. Astronomical timers and most smart controllers follow sunset automatically. Our Texas dusk timer shows sunset times by month for your city.

Would you rather leave the upkeep to someone else? Landscape Lighting Texas offers landscape lighting maintenance and repair for any brand of system, from annual tune-ups to troubleshooting and LED retrofits. You can also request a free estimate and we will take a look at your system.