Questions about flushing prior to harvest and trichome assessment 😎

[New2GrowNot2Weed]

Today is just over 8 weeks since I planted the germinated seeds, not 8 weeks of flowering, 8 weeks total and my how these girls have grown .
-Two White Widow autos
-Two Sour Diesel autos
-FFOF soil with added perlite
-I’ve used Bergmans nutes during the veg stage and I’ve been using the Bergman Flowering nutes every watering now(haven’t used the Plant Booster Nutes yet… if anyone has input on whether or not I should swap the Flowertime nutes and feed the Plant Booster nutes for a few feedings please let me know !! :))

As this is my first grow and you’ve all been super helpful so far I’m hoping you can guide me through my first harvest. These are the girls…
-Back left is a White Widow and she was the first to start flowering
-Back right is a Sour Diesel
-Front left is the other Sour D with some LST
-Front right is the other WW with some LST

I’ve been monitoring the trichomes on the WW that started flowering first. I’d prefer to harvest all at the same time if possible….

Would you say these are still considered clear or cloudy trichomes???

I don’t see any amber yet, but if I’m missing anything please let me know!!

[New2GrowNot2Weed]

So my main question is how do I determine when to begin flushing?? If I’m not mistaken, I want to “flush” meaning no nutes and only water for the last two weeks or so prior to harvest?

Here are some other picks of the WW who started flowering first and is seemingly the furthest along in the process…

[OGIncognito]

@New2GrowNot2Weed

I want to “flush” meaning no nutes and only water for the last two weeks or so prior to harvest?

this would be considered a water feed only like a typical water day. The canoeing leaves in the pic are a concern

[New2GrowNot2Weed]

So does that mean that flushing refers to just no water or nutes then?? Do you think the canoeing leave could be from too many nutes? I did just increase the nute dose in their last feeding which was yesterday morning. Throughout this whole process I’ve seen the leaves turn up, turn down, canoe, have burn tips, etc… but regardless of what it is it always seems to be short lived as they have always seemed to go back to a more normal state in a day or day. I’ll keep an eye to see if that settle back down

[Medicineman33]

I start flush soon after the pistils have all turned amber

[OGIncognito]

2 types of flushing and for 2 different results. A harvest flush is typically done right before you harvest to rinse the existing nutrients away and there’s an issue flushing and generally to correct an PH that’s higher or lower than the range. High nutrient PPMs are the other and for soil grows this is ideal at a1000-1200 PPMs and a PH of 6.5. Both of these are tested using the run off during watering or feeding
I don’t flush at harvest but do a water feed the last 2 weeks leading up to harvest

[New2GrowNot2Weed]

Thanks! I’m still pretty confused as to what the difference is between a water feed and a harvest flush. Both involve giving just water with no nutes right?

Is it that either of the flushes require watering until there is a good bit of runoff, and the water feed is just watering the plants normal amount regardless of runoff?

[OGIncognito]

A harvest flush is done at 1 time and most cultivators have a target PPm in mind before they stop the flush use 300-400 PPMs as an example. A water feed is replacing the nutrient feed completely where you would normally alternate feed and water. Hope that helps I was a little confused on the last question

[Outlaw]

Flushing entails running around three times the volume of the pot in water through. So if you have three gallon pots you’d run around nine gallons through to correct some issue with the medium. Some people do one before starting to water feed but stop when the runoff hits target ppm like @OGIncognito said above.

Water feeding the last two weeks you use the same amount of water as you did nutrient solution. It gives the plants a chance to use up stored nutrients, etc.

[Jestertz]

Question. Im also using bergmans. I havbt bituced any bad signs in my plant yet. But i skip watering because i feed at 800 pp. And sometikes comes back out at 1200ppm. Although my onats are insane and have flourished. Do you chexk ppm and ph on runoff after bermans ?

[New2GrowNot2Weed]

I think I’ve got it now, thanks for the clarification.
I’ve been giving each plant 60oz of water with their nutes every other day, but I haven’t given them water that didn’t contain nutes in several weeks. I didn’t realize that most alternated between a watering with nutes and then a watering without them the next time.
Still trying to learn the process… I think I was mistakenly thinking of watering and feeding as one in the same, aside from if a plant had nute burn in which case one would just water without nutes for a bit.

That last question of mine no longer makes sense with my new understanding now

[New2GrowNot2Weed]

Thanks! Definitely grasping this more now. I’m probably just going to water feed the last two weeks. I suppose I do need to figure out how to predicate when they’ll be two weeks away from being ready to harvest!

[Jestertz]

Do you have a ppm meter ?? Th ats the best way to tell. Ive boticed with bergmans tge ppm out is higher than in but no ill effects yet. Wondering if snyone else had this

[New2GrowNot2Weed]

I don’t.

[Outlaw]

That’s a tough one, but there are a lot of people on this forum that can help you a lot by just looking at a picture of the plant and a close up of the trichromes.