Aug 30: it’s still hot (too hot at peak for photosynthesis) so lots of water, watering outside of growbag, etc to cool things off a bit.
Sep 1: almost ready. Found a dried leaf and a spot of bud rot which was immediately removed. Main tops are almost ready and I’ll start harvesting this one later this week.
Sep 2: buds are looking pretty ready (at least the tops) and the pistils changed colour last night. Heatwave is now past and now we’re into a couple days of smoke from fires in the NWT. Sucks, but at least this is the first serious smoke here this year.
Sep 4: decided to do a chemical flush this year. Great buds last year but didn’t burn well because of excess P in late flowering. Considered another flush product but looking at the MSDS sheets that stuff had ‘editic acid’ which is an obscure but acceptable name for EDTA. That is a very strong chelating agent which will remove salts effectively but I’d rather avoid it. In contrast, Final Flush from Grotek has potassium sorbate (generally recognized as safe food additive) and good old citric acid which is a chelating agent but not as strong as EDTA. Similar products but citric acid is more gentle and the plant still gets some potassium.
Sep 5: don’t take flash pics of photoperiod plants unless you follow up with a far red light.