9-59-8. Phosphorous When does this need to be used?

I’m three weeks into flower. Some people say use it now. Some people say to wait til the last three weeks. I’m using my local shops full nutrient line, full feed schedule. When should I use a product with 9-56-8 going on?

i think its mainly used in the last few weeks before you flush/harvest

as a ripening and bud fattening tool

As @diggs99 said, at the very end.

Back when I first started I ran peters dry nutrients. I used 20-20-20 for veg, 10-30-20 for flower and 10-60-10 to finish. Worked very well.

Also when running that you may wanna boost the K (potassium) some as well. We call late flower nutrient additives PK boosters as they have more Phosphorous and Potassium.

99% organic now but used Peters 20-20-20 early on. Still keep some around for quick fix in veg if needed. No complaints and happy results as I recall.

Never.

Stick to a balanced feed.

whitebb2727 said:

Never.

Stick to a balanced feed.

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Pretty much that.

It's not really so much that the plant needs more phosphorous during flower as it is you just don't need that much nitrogen. I've always used regular, general purpose Miracle Grow during veg which is 24-8-16 and the tomato formula for flower which is 18-18-21.

I could, if I wanted, just stick to the tomato formula and be just fine...but I've been doing it that way since the beginning and it always works very well. If it ain't broke, don't fix it.

Old friend red neck grower once told me if you can grow tomatoes, you can grow pot. That’s what Cannabis was known as then!

hillbill said:

Old friend red neck grower once told me if you can grow tomatoes, you can grow pot. That’s what Cannabis was known as then!

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Your old redneck friend was correct.

whitebb2727 said:

Never.

Stick to a balanced feed.

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What are the negatives of using it the last three weeks versus not?

Or rather I meant what’s going to happen if I use it the last few weeks versus not using it. The shops feeding schedule paper I got from my local shop says to use it during “ripening’. They said that would mean the last three weeks.

Dragon Daddy said:

What are the negatives of using it the last three weeks versus not?

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Scientific Fact say's a cannabis plant needs no more than 15 ppm of elemental phosphorus available at anytime during it's growth.

Dragon Daddy said:

Or rather I meant what’s going to happen if I use it the last few weeks versus not using it. The shops feeding schedule paper I got from my local shop says to use it during “ripening’. They said that would mean the last three weeks.

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Potassium is more key than phosphorus in the ripening process. Sounds like you fell for the stores marketing.

jarvild said:

Sounds like you fell for the stores marketing.

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And the flushing bullshit that goes along with it.

Dragon Daddy said:

Or rather I meant what’s going to happen if I use it the last few weeks versus not using it. The shops feeding schedule paper I got from my local shop says to use it during “ripening’. They said that would mean the last three weeks.

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Rule #1. Don't listen to the guys at the local shop that are in the business of selling as many products as they can.

jarvild said:

Potassium is more key than phosphorus in the ripening process. Sounds like you fell for the stores marketing.

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Well they’re there to sell you things so that’s their game sometimes. I don’t buy anything from them except nutrients. Everything besides nutrients and mediums and things is pretty expensive there. But I’m not totally convinced yet they’re trying to pull my leg on this. You have people above that say this plan is one to use too so I’m still not sure who here is correct.

I’ve grown without flushing before I’m aware that is more than likely a myth as far as how it affects your flavor/harshness.

I actually gave my two flowering plants that high phosphorous blend once already at week 2 and week three respectively and they both are doing great they got that watered in maybe four days ago.

Dragon Daddy said:

Well they’re there to sell you things so that’s their game sometimes. I don’t buy anything from them except nutrients. Everything besides nutrients and mediums and things is pretty expensive there. But I’m not totally convinced yet they’re trying to pull my leg on this. You have people above that say this plan is one to use too so I’m still not sure who here is correct.

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Then look outside of the cannabis blogs and see what the real world of botany says.
Grown from start to finish with a 2-2-3 nutrient profile

jarvild said:

Then look outside of the cannabis blogs and see what the real world of botany says.
Grown from start to finish with View attachment 4282436 a 2-2-3 nutrient profile

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Nice dude what size containers