Removing green algae from garden furniture: Tips & step-by-step plan
Green algae on garden furniture is stubborn. Read how to safely clean and protect your furniture.

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Green algae on garden furniture is often caused by moisture and shade. This algae can cause green stains and give your furniture a dirty appearance. Fortunately, you can easily tackle this with an eco-friendly cleaner such as Osmo Patio Cleaner. In this article, you will read how to remove green algae and protect your wooden garden furniture against future deposits.
Step-by-step plan: removing green deposits from garden furniture
With this simple step-by-step plan, you will get your garden furniture clean again quickly:
Preparation
Remove leaves, dirt, and dust from your garden furniture. Check for damp spots where green deposits usually form. If possible, place your furniture in a sunny spot to help it dry faster.

Mix the Osmo Patio Cleaner
Mix the Osmo Patio Cleaner with water in a bucket. Adjust the ratio according to the severity of the stains:
- Light stains: Mix 1 part cleaner with 25 parts water (1:25).
- Stubborn stains: Use a 1:1 mixture for maximum power.

Apply the cleaner
Apply the mixture evenly to the wooden garden furniture with a sponge, brush, or spray bottle. Let the cleaner work for 10-15 minutes, but prevent it from drying out.

Scrub thoroughly
Use a stiff brush or a scouring pad and scrub the surface vigorously to remove the green buildup and loosen algae and moss. Repeat if necessary.

Rinse with clean water
Rinse your garden furniture thoroughly with water, for example with a garden hose. Avoid using a pressure washer, as it can damage the wood.

Check the result
Check if all green deposits have been removed. Repeat the treatment if stains or deposits are still visible.

Follow-up treatment
Protect your garden furniture with Osmo Natural Oil Stain
After cleaning your garden furniture, it is advisable to treat it with Osmo Natural Oil Stain. This product creates a durable layer that repels your garden furniture against moisture, dirt, and UV radiation. The oil penetrates deep into the wood and helps prevent graying and damage.
Supplies
Apart from these products, you will also need a bucket of water or a garden hose.
Benefits of Osmo Patio Cleaner
The Osmo Patio Cleaner offers a safe and effective solution for removing green deposits. Some benefits:
- Suitable for various surfaces, such as wood, tiles, and natural stone.
- Protects the material without causing damage.
- Economical to use, covering up to 100 m² per liter of product.
- Environmentally friendly and easy to apply.
Tips for a long-lasting clean result
- Clean your garden furniture at least twice a year, preferably in spring and autumn.
- Avoid damp spots and ensure your garden furniture receives sufficient sunlight.
- Remove dirt regularly to prevent new deposits from building up quickly.
Colors and finishes
Osmo Natural Oil Stain is available in 19 colors, allowing you to give your garden furniture exactly the look you desire. The oil ensures that the wood grain remains visible and the wood retains its character.
Unsure about the color? With Osmo color samples, you can easily test which shade best suits your garden furniture. For long-lasting protection against UV radiation and graying, we recommend an oil with color pigment. The colorless variant 701 offers less protection against sunlight and is therefore less suitable for prolonged exposure to the sun.
With the right color and treatment, your garden furniture will look beautiful and well-maintained for years!
Osmo Natural Oil Stain
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