H2O2 washing experiences

It’s my third season growing outdoor this is the first year I have had to deal with white powdery mildew.

After some research I decided to do an H2O2 bath + baking Soda and lemon juice + rinse. A day later and I notice that some of the WPMD is still visible on the sugar leaves I want to ask people who have experience in this process is this normal? Or should there be no visible evidence after the wash?

I soaked them in the solution for about a minute maybe that isn’t enough. Any advice would greatly be appreciate I am very much still learning how to deal with challanges faced growing outdoors. I included some pictures of the plant.

If the spores are dead, it should be no problem to spray them down with water.

Or pluck the leaves

I've never felt with it, but my assumptions of what to do

EDIT: just noticed this was 10 days ago. Hope you got it solved

You should be "agitating vigorously" moreso than a "soak", esp with WPM. Beautiful plant btw!

Thanks for the reply’s guys I talked to some people at my local grow store and that’s what they recommended more agitation.

Seemed to be more successful on the second plant I grew. Living in the Pacific Northwest I thought it would be one of the best areas to grow as we don’t get frost until Late.

Problem I am having the last few seasons is relative humidity and moisture is causing a lot of mildew/mould development once mid September hits. I am growing plants from the area (texeda timewarp crosses).

Next season I’m going to grow a couple
Autos flowers and photo periods that are advertised as early.