These are formed from iron in the fertiliser or weed killer reacting with moisture to form rust.
Yellow stain from weed and feed on vinyl.
Orange stains are most common.
Hosing your vinyl siding down routinely will help keep it free of dirt and grim.
I have almost threatened to divorce dh this week after he decided to put evergreen 4 in 1 on our back lawn but failed to realise that any spillages damp footprints from the product etc.
Occasionally white stains also appear from salts in the fertiliser.
Fertiliser that accidentally lands on walkway and patio pavers may leave behind stains.
Chemicals that are commonly used outside such as deck stain insect repellent and asphalt can accidentally come in contact with your vinyl siding leaving behind yellow.
Weed and feed rust stains on patio success.
I had the same problem i put llawn feed weed kill down very carefully on wet ground with it raining to help soak it straight into the ground.
However stains can sometimes appear on your siding that cannot be removed with water alone.
But in the night a cat had walked across the grass and onto my steps and patio leaving rusty coloured foot prints plus some rusty coloured splash drops had somehow managed to get onto the slabs as well.
Results in vile orange rust stains.
Orange to rust colored spots may appear and are attributed to mold and mildew that can also produce stain causing pigments as seen in the photo below.
There are many ways you can remove the stain.
That orange stain on your concrete is indicative of the rust that is contained in many fertilizers.
This article will show you how to remove fertilizer orange stains on concrete.
Pink stains aren t the only types of stain that can occur on vinyl.