Probably every garden owner is happy about fresh green in his garden, but it should grow in the right place. On the other hand, moss or verdigris on garden paths, furniture or terraces as well as on house walls is less popular.
Green film on wood is not verdigris
What is verdigris anyway?
True verdigris forms on brass or copper when the metal comes into contact with air and acetic acid. This toxic blue-green coating cannot form on wood or stone. The green covering on these materials is more likely to be algae, moss or lichen. They mainly occur in the shade and with prolonged or frequently recurring moisture.
What helps against green growth?
If the coating is still thin, it can often be removed mechanically and dry by brushing or scrubbing. A thicker plaque is usually more stubborn and therefore more difficult to remove in this way. You need time and energy for this. Soda or baking soda can make things easier for you. Mix about a tablespoon of baking soda or soda into your cleaning water for every liter of water.
During your work, bear in mind that the powder to be processed can irritate the mucous membranes of your respiratory tract or your eyes. Therefore, you should not inhale the dust. However, the use of the lye produced is considered to be environmentally friendly. You can also use it to remove green deposits from concrete or natural stone walls. Allow the lye to soak in for a while before brushing off.
How can I prevent green growth?
On the terrace or balcony as well as on garden paths, you can prevent it with regular but gentle cleaning. It is best to store garden furniture in a dry place when not in use. After a surprise downpour, let the furniture dry in the sun before storing it.
The most important things about green covering in brief:
- Forms mainly in the shade and when there is moisture
- should be removed as early as possible
- if possible remove mechanically (brush or scrubber)
- if necessary, use environmentally friendly agents (soda or baking soda)
tips
The sooner you remove the unwelcome green growth, the gentler you can use.