Palm, Avocado and Citrus Stains on Concrete

Pick up early, clean the residue

In a lot of LA yards, the trees that make the place feel like home also make the mess. Palm trees drop clusters of small fruit, avocado trees drop heavy fruit that splits on impact, and citrus trees drop ripe oranges, lemons and grapefruit that rot in the sun. Each leaves a different kind of stain.

The most effective step is simply removing fallen fruit before it gets crushed or rots. After that, the cleaning depends on what is left: sugary juice, oily pulp, or dark pigment.

Why each fruit stains differently

Citrus juice is sugary and acidic. It leaves sticky patches that grab dirt and can slightly dull the surface of concrete where it sits a long time. Palm fruit, especially from date-type palms, is small, dark and sticky, and when it gets ground into a driveway by tires it leaves dark spots and streaks. Fronds and fiber add brown tannin stains.

Avocados are different because the flesh is oily. A crushed avocado leaves a greasy patch that behaves more like a food spill than a leaf stain, and it can darken as dirt sticks to it. Leaf stains from these trees are covered in our tree and leaf stains post.

Why the ants show up

Sugary residue from fallen fruit is an open buffet for ants. Even after you pick up the fruit, a sticky film on the concrete can keep a trail coming back to the same spot, sometimes right up to your door.

Washing away that residue removes what is drawing them. Clearing up fruit daily during heavy drop season helps too. If ants are nesting in cracks or joints, that is a pest control question, not a cleaning one.

Rotting fruit also attracts flies, and at night it can draw rodents and other animals looking for an easy meal. Clearing it promptly is about more than looks.

How to remove the stains

Start by scraping off any pulp or skin and sweeping the area. For citrus and palm fruit, pre-wet the concrete, apply a mild detergent or a diluted oxygen-based cleaner, let it dwell, scrub with a stiff nylon brush, and rinse. For avocado, use a degreaser, since water and plain soap tend to spread the oil. Give it time to work before rinsing.

A surface cleaner across the whole slab gives an even result. Spot cleaning only the stains can leave bright patches next to dingy concrete, which looks worse than you expect.

Clean in the morning or late afternoon in summer. On hot concrete, cleaner dries too fast to work and can leave its own marks.

What to expect

Fresh stains usually come out fully. Spots that have been baked on through a Valley summer or ground in by tires for months may only lighten. Light concrete shows shadows more than gray or colored concrete. Etching from long-sitting citrus juice is surface damage, not dirt, so cleaning will not undo it.

Be careful on pavers, stone and stamped concrete. Use products safe for those surfaces, and test before treating a large area.

Prevention that actually works

Harvest citrus and avocados when ripe rather than waiting for them to drop. Ask an arborist about trimming palm fruit stalks before they ripen, especially for trees over a driveway. Put a tarp or ground cover under heavy-dropping trees during the peak season if the layout allows it. Sweep or blow the area every few days. Hose down sticky spots the same day.

Sealing concrete in the drop zone also helps, since stains sit on the surface longer instead of soaking straight in.

Cost and runoff

As of October 2026, driveway cleaning is $0.50 per square foot and patio cleaning is $0.65 per square foot, with a $195 minimum per visit. When Say Wash It cleans fruit stains, we pre-treat the spots before cleaning the full surface so the finish comes out even, and the flat price is confirmed before work begins.

Keep wash water and fruit debris out of the gutter. Los Angeles Municipal Code section 64.70.02 prohibits discharging untreated wash water from paved-surface washing into the storm drain system.