Algea

Advice on what to use to clear the green Algea on the Patio Slabs that won't kill my plants should it seep into the border.

 

I use a pressure washer

 

Havent got one ! Very small area .

 

For a small area Patio Magic is very good. Dilute to 5:1 in a watering can or sprayer and apply.
No need to do anything else it takes a few weeks to take affect but keeps the algae clear for months.
Available at garden centres and agricultural merchants.

http://www.keengardener.co.uk/path-drive-weedkillers/1712-patio-magic-patio-cleaner-25l.html

 

Oh Thank You,
That is just what I wanted to know, Will get some tomoorow altho better wait until it stops raining for it gets diluted !