i gave it a shot of super thrive. maybe some mg tomorrow its 10-0-0Plants in general love rain water. They should be in flower if they're outdoor - yellowing could just be natural as they stop focusing so much on nitrogen uptake and worry more about phosphorus uptake to produce the buds. I don't see any harm in feeding them - but I'm used to blue skies during out door being from Cali. If you do feed them, I'd cut back on the nitrogen amount anyways.
about a month in. my plan was to wait till october. then play by ear.How far into budding are these? Being from the same area as yourself, I know the wet season is coming and if your not about finished budding within the next week or so you'll want to get them covered and make sure you get lots of air movement around them, and not allow them to get soaked once the weather cools. Powdery mildew is notorious up here and usually gets the ones I don't have covered...even when I treat with preventives. Post up some pics! Peace and great luck to you!! gman