Pollen Season in North Florida: When to Wash So It Actually Stays Clean
In North Florida, pine pollen runs roughly from February through April, and the best time to wash a house is after the yellow coating stops returning, usually late April or early May. Washing at the peak looks great for two days. A rinse mid-season is reasonable for screens and cars, but save the full wash for the end.
What the yellow season actually is
The bright yellow dust that coats everything in St. Johns and Duval County each spring is mostly pine pollen. It comes off the loblolly, slash and longleaf pines that grow everywhere in Northeast Florida, and it arrives in a heavy wave that generally starts in February, peaks in March, and tapers through April. Oak catkins overlap with it, which is why the yellow film often comes with a layer of brown stringy debris on the driveway.
Pine pollen grains are large as pollen goes, which is why you can see them. That is also why most people are not actually allergic to the yellow stuff. The pollens that make eyes itch are usually oak, grass and ragweed, riding along invisibly. The pine is the part you have to clean, not the part making you sneeze, and the two problems are easy to confuse.
Volume is the thing that surprises newcomers. A pine will release pollen in visible clouds on a windy March afternoon, and a screened pool enclosure downwind of a stand of pines can go from clear to solid yellow in a single day. Nothing is wrong with your house. This happens to every house in the region on the same schedule.
Wind direction and what is planted upwind decide how bad your particular lot gets. A home with a stand of pines on its west side collects far more than a home two streets over with an open retention pond there, and the difference is big enough that neighbors sometimes disagree about whether the season was heavy at all. Look at what surrounds you before deciding your house is unusual.
What pollen does to the exterior
Screens catch the most. Pool cages, lanai screens and window screens are essentially filters, and during pollen season they do exactly what a filter does. A heavily loaded screen cuts airflow, dulls the light coming into the room, and looks yellow-gray from inside. Left through the whole season, that pollen mats with dust and rain into a film that a garden hose no longer moves.
Siding and stucco hold it in the rough spots. Pollen settles on horizontal ledges, window sills, soffits and any textured finish, and then the first rain turns it into a yellow-brown streak running down the wall. On light-colored houses those streaks are obvious from the street. Pollen on its own is not corrosive, but it is organic, and organic material sitting damp on a wall is what mildew feeds on.
Pool decks, cars and outdoor furniture take a cosmetic hit and a practical one. Pollen washed off a deck by rain ends up in the pool and the filter, and pollen ground into a car finish by a dry rag scratches. On the deck itself, the season leaves a yellow haze that gets slippery in spots where it mixes with algae. Enclosures get their own treatment in cleaning pool decks, lanais and screen enclosures.
When to wash so it actually stays clean
Late April into early May is the window most homeowners want. By then the heavy pine release has finished, the leftover pollen has been rained through, and a wash will hold. Book a full house wash in mid-March and you will watch a fresh yellow coat land within a few days, which is frustrating and not the fault of the work. Our spring pressure washing checklist lays out the order for the rest of the season.
Mid-season rinses are still worth doing in two cases. Screens and pool cages are one, because a loaded screen affects how a room feels and how a pool filter runs, and a gentle rinse takes the load off without pretending to be a full cleaning. The other is anything with a scheduled event attached, like a graduation or a listing photo shoot, where the house needs to look right on a specific day.
Do not schedule the annual wash around pollen alone. Growth on the north side of a house, black streaks on a roof and a green driveway all run on their own timeline and can be handled any month of the year. Pollen just makes spring feel urgent. It is the most visible dirt of the year and the least damaging.
Gutters are the one item best handled at the tail end of the season rather than before it. Pollen, oak catkins and spring leaf drop all end up in the same trough, and clearing it in February means clearing it again in May. Waiting until the drop is finished gets you one visit instead of two, and it puts the gutters in shape before the summer afternoon storms start.
Rinsing versus actually washing
A hose is not a wash. Plain water knocks the loose yellow layer off and leaves the embedded film behind, which is why a driveway hosed down in March looks clean while wet and yellow again as it dries. Removing pollen properly takes a cleaning solution that breaks the film and lifts it, followed by a rinse from the top of the surface down.
Pressure is not the answer either. Screens, screen splines, window seals and painted surfaces all take damage from too much force, and pollen does not need force. Low pressure with the right solution does more, faster, with less risk. If you have not had a house wash before and want to know how the day goes, what to expect from a house wash walks through it.
Windows deserve a separate pass after pollen season rather than a quick wipe during it, since dry-wiping pollen off glass grinds it in and leaves fine scratching. Timing and intervals are covered in how often Florida windows need cleaning. If you want your Saint Johns, Nocatee, Mandarin or St. Augustine home on the calendar for the end of pollen season, Request a quote or call (904) 506-7656.
Frequently asked questions
When does pollen season end in North Florida?
The heavy pine pollen wave generally runs February through April, tapering off by late April. Oak and grass pollen continue past that but are far less visible. Most homeowners find that a wash in late April or early May holds well.
Should I wash my house during pollen season or wait?
Wait for the full wash if you can. Washing at the peak looks great for a couple of days and then a new layer lands. A mid-season rinse of screens and the pool cage is still worth doing, since a loaded screen affects airflow and pool filtration.
Does pine pollen damage siding or screens?
Pollen itself is not corrosive, so a season of it will not hurt the material. The issue is that it is organic, and organic film sitting damp on a wall or screen feeds mildew. Removing it at the end of the season keeps that from starting.
Related reading
- Pressure Washing in RiverTown: What River Air Does to a House
- Pressure Washing in Orange Park: Older Homes Need a Gentler Method
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H2O Pressure Washing serves Saint Johns and the wider St. Johns County area. For a free, fixed-price quote, tell us about your property or call (904) 506-7656.
