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

Dragon Daddy said:

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

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Lock out. I can guarantee this will happen if you're in an organic soil. Coco, Promix you may get away with it.

Forgot to answer OP's question but no, never really needs to be used.

I used it the last 2-3 waterings at recommended dose. The one on the right has some claw but still is ok seems to be developing bud ok. The one on the left is 33 days into flower and the one on the left is 27 days.

hillbill said:

That P number is a bit deceptive because the very low dilution rate of the high phosphorus synthetics. So they are basically high P supplements. In final watering mixture the 9-59-8 would be much more diluted than say a 20/20/20.

High P fertilizer is not all it’s cracked up to be. The need for very high P is also suspect. Very effective for a marketing ploy.

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Exactly. Not needed.

TheHarvester said:

Exactly. Not needed.

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Thanks for the input man I’ll follow this advice and learn to grow like a pro just like you . Happy Growing

Looks like my plants are still doing good! They smell amazing. The og kush has like a lemon/woody/chemical/otherworldly smell to it. The mystery Bubba has more of a fruity but still kind of fuel/chemical smell that I love. The smell is just awesome.

They look beautiful.

xtsho said:

The proof is in the marijuana plant problems section where people are 4 - 5 weeks into flower and then all those bloom boosters they dumped on their plants are causing havoc. Then you get the plethora of replies with advice from it's this micronutrient or that micronutrient deficiency. The standard picture chart of deficiencies is posted, someone says to add calmag, someone else says flush it with X pH'd water, etc... The root cause of the issue is from over fertilization.

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Hahahha, so true.

Update when I get home from dinner

I’ll try to get some more closeups of the one further along in flowering on the left. The one on the right is OG Kush CBD and is 34 days/5 weeks in flower and the one on the left is the mystery which is 40 days/almost 6 weeks in.

I haven’t stopped giving the one of the left this phosphorous boost. The one on the right showed claw a week ago or so and so last water was just water and some other basic stuff trinity catalyst by roots organic uh some other shit they’re supposed to get in flower according to my shops nutrient schedule smart tea, etc. By the way I order some jacks 321 so I’m going to find out how these results compare with jacks which I hear people swear by.

Dragon Daddy said:

Looks like my plants are still doing good! They smell amazing. The og kush has like a lemon/woody/chemical/otherworldly smell to it. The mystery Bubba has more of a fruity but still kind of fuel/chemical smell that I love. The smell is just awesome.

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What medium is that?

It is a mix of pro mix, Bush Doctor coco loco, and fox farm potting mix. I am thinking I used half a brick of promix bx and bag and half each of Bush Doctor and ff potting mix. I think the ratio was about that, something like that, 2/3 promix 1/6 Bush Doctor coco loco and 1/6 ff potting soil. Somewhere around that, maybe slightly more of the coco loco and potting mix than a 1/6 each.

Yea, you are throwing too many variables into the mix. Then adding your additives and catylsts, etc. which is making things further out of wack. Then if you don't flush or water with adequate run off, you'll get salt build up.

I've never used fox farm but from what I've read, it's pretty hot on it's own.

TheHarvester said:

Yea, you are throwing too many variables into the mix. Then adding your additives and catylsts, etc. which is making things further out of wack. Then if you don't flush or water with adequate run off, you'll get salt build up.

I've never used fox farm but from what I've read, it's pretty hot on it's own.

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How do my plants look though brother?you said they look beautiful, they seem to look fine to me, do you see something in your crystal ball that I am missing? You seem to have some axe to grind here brother... Is there any point you want to make? The nutrients I used from the shop were cheap, easy to use, just followed the schedule, I seem to be looking at some pretty great results... is there anything relevant to my grow and it’s current thriving state which you would like to contribute?

I mean do you think I set this thread up with a question asking when I should use this high phosphorous thing as a way to try to prove you and all the people who said it was unnecessary wrong? No man, I’m new to growing I found out for myself I was able to use the stuff and all the other stuff I got at the grow store and the things are doing fine

I just got some jacks 321 in the mail so I’m about to try the “fair and balanced” approach as well if it makes any of you feel better about me lol

TheHarvester said:

Yea, you are throwing too many variables into the mix. Then adding your additives and catylsts, etc. which is making things further out of wack. Then if you don't flush or water with adequate run off, you'll get salt build up.

I've never used fox farm but from what I've read, it's pretty hot on it's own.

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And I always water to the point of having 10-30% runoff.

My advise on it and with everything relating to this is ease into it.
Start off light and note what happens, never come in at the recommended strength, or you will most likely create a problem.
Don't forget that less is more. All you need to grow great weed is nothing more than you would need to grow something like tomatoes. It is very easy to get caught up in marketing, because of the yields of the plant we grow. If green beans went for $70 each, you would see elaborate nutrient formulas for them, and people arguing to the death over which NPK ratio to use on snow peas.
Hydroponic stores and companies know that no one is really spending big bucks to grow lettuce and stuff. Since weed is worth so much compared to other crops, companies put huge money into marketing their 'special' stuff for it. People think you need all this stuff for it, and you don't.