How you clean green lime off house bricks?

Mold mildew remover should work or try pool chemical liquid chlorine

Lena: I used to spray Tilex on it!

you can pressure wash the area using bleach

https://www.youtube.com/watch?v=WElUX26LmQI

Have you tried using a pressure cleaner? You can rent one for a weekend OR buy an attachment to your own garden hose. The attachment is not quite as powerful, but does the job well. Also, use a mold/mildew killer like Simple Green or vinegar for mineral deposits.

Hello, we have a waterfront location and easily get build up of mold and mildew use with our extreme humid micro climate. We have use this Oxi clean formulation power washing solution is quite effective and it will not harm landscaping. It might be an alternative to consider.

This product is labeled fabric, plant and turf friendly.

Please check customer reviews +Q&A to see if it might meet your needs.

https://www.amazon.com/Scotts-Outdoor-OxiClean-One-Gallon-Concentrate/dp/B00T3ZO06I/ref=cm_cr_arp_d_product_top?ie=UTF8

I hope this helps.