I've used Overdrive many grows. It does work if the strain decides to slack off on flower production at the end of the bloom cycle. Use it on weeks 5-6 of a eight week strain. Harvest at week eight, as usual. For longer flowering strains weed four weeks from harvest or earlier if you notice the pistils are not bushing out like you'd want. Two weeks before harvest plain water is the norm (or sweetened water or final phase type of shit).
Shovelhandle Reviewed by Shovelhandle on . To harvest or not to harvest. Hi all, this is the first time I have used "Overdrive".... started about 2 weeks ago on Indica that was close to harvest....now it has completely changed, grew a ton of new white flowers, colas bulked up twice their size and got dense but now I am not sure if it is harvest time. The old flowers have brown hairs but the new ones are all still white with clear trichomes. I don't want to let them get past their peak like I have done before but dont want to cut them prematurely.' The Sativas Rating: 5