Green mold on my deck- help

Power wash the deck with a deck cleaner and let it dry for a few days in warm temperatures with lots of sun and no rain. If you have no power washer you can still use the deck cleaner with a good stiff garage broom and some scrubbing and rinse with the hose and a nozzle.

Powerwash with commercial deck cleaning solution.

Bleach

See if this helps!

https://www.hunker.com/13416507/how-to-clean-green-mold-on-a-deck

I use vinegar for everything, but may not be the best choice for a deck.

I use Clorox bleach diluted in water. It come right off and its cleap.

use wet and forget it is the safest and easier

Power hose or scrub it with a mixture of dish soap and water, then rinse and allow to dry befp staining

Power washing removes green mold if done correctly. I'll bet your deck faces north.