Less N in flower, or just more PK?

NeWcS

NeWcS

Well-Known Member
So when looking at feeding schedules and talk online; I always notice of talk of lowering the N in flower.

1) It got me thinking; Do plants really need less N in flower or is it they just need more P&K? So are we talking less N and more PK, or just more PK while leaving the N alone? I run all my plants from seedlings to harvest on pretty much the same nutes. In flower I just leave everything alone and add a PK boost(koolbloom). I've had great results doing this thus far...

2) Will plants even take N (or PK for that matter) if they don't really need it? Doesn't a plant take only what it needs, when it needs it?

Any input would be cool. Thanks
 
myke

myke

Well-Known Member
I back off the N right at flower.But everybody probably uses different nutes so you do what works for you.
 
HitemwiththeHine

HitemwiththeHine

Well-Known Member
You can do both. You can back off the base NPK to lower your N and add PK. Some people back off the calnit instead/as well, I think. I don't have a NPK calculator. I do like you and add PK at flower.
 
G

growingforfun

Well-Known Member
NeWcS said:
So when looking at feeding schedules and talk online; I always notice of talk of lowering the N in flower.

1) It got me thinking; Do plants really need less N in flower or is it they just need more P&K? So are we talking less N and more PK, or just more PK while leaving the N alone? I run all my plants from seedlings to harvest on pretty much the same nutes. In flower I just leave everything alone and add a PK boost(koolbloom). I've had great results doing this thus far...

2) Will plants even take N (or PK for that matter) if they don't really need it? Doesn't a plant take only what it needs, when it needs it?

Any input would be cool. Thanks
Click to expand...
That is old school ideas.
More current thinking is balanced nutrients veg-flower, full cycle.

I use 20-20-20 the whole time for the best results I've ever gotten. I use one tbsp/5gal in early veg then 2tbsp/5gal late veg till the last 2 weeks of flower, then 1 tbsp/5gal the last little bit. No flush.

Flushing is for people who pump the plants full of 0-50-50 type nutrients the last couple weeks of flower and turn there plants into fireworks from all the phos.
 
Budzbuddha

Budzbuddha

Well-Known Member
Plants just utilize less of it in flower . Plant will not make more new leaves and branching .
Flowers are now the main focus ( swelling and maturing ) but N does help keep photosynthesis moving along.

However over use of N during can and does “ interfere “ with flower stage ...... excess can cause slower bud development, “ smaller flowers “ too.
 
Budzbuddha

Budzbuddha

Well-Known Member
growingforfun said:
That is old school ideas.
More current thinking is balanced nutrients veg-flower, full cycle.

I use 20-20-20 the whole time for the best results I've ever gotten. I use one tbsp/5gal in early veg then 2tbsp/5gal late veg till the last 2 weeks of flower, then 1 tbsp/5gal the last little bit. No flush.

Flushing is for people who pump the plants full of 0-50-50 type nutrients the last couple weeks of flower and turn there plants into fireworks from all the phos.
Click to expand...

I run a 5-5-5 also .... til end .... no frills.
 
grapenut2457

grapenut2457

Well-Known Member
Hmmmm. Revolutionary stuff to post on here. I have some damn nice looking girls for using dept store nutes....but if anything I stayed on the shy end of feeding.
 
xtsho

xtsho

Well-Known Member
growingforfun said:
That is old school ideas.
More current thinking is balanced nutrients veg-flower, full cycle.

I use 20-20-20 the whole time for the best results I've ever gotten. I use one tbsp/5gal in early veg then 2tbsp/5gal late veg till the last 2 weeks of flower, then 1 tbsp/5gal the last little bit. No flush.

Flushing is for people who pump the plants full of 0-50-50 type nutrients the last couple weeks of flower and turn there plants into fireworks from all the phos.
Click to expand...

KFC stand for Krispy Fried Cannabis.
 
Nabbers

Nabbers

Well-Known Member
Wouldn't there potentially be a difference between hydroponic feeding and organic fertilizer in soil? I would imagine with organic fertilizers, a mild overabundance of any nutrient wouldn't have as much of an impact as the plant is trying to take in what it needs and leave what it doesn't.
 
NeWcS

NeWcS

Well-Known Member
Nabbers said:
Wouldn't there potentially be a difference between hydroponic feeding and organic fertilizer in soil? I would imagine with organic fertilizers, a mild overabundance of any nutrient wouldn't have as much of an impact as the plant is trying to take in what it needs and leave what it doesn't.
Click to expand...
Its a dangerous line us 'salt' guys' walk. ;)

This is all in regards to mineral based nutes. You're right. Giving a plant too much salt based nutrients will have a far different result then doing the same w/ teas and such
 
Merlin1147

Merlin1147

Well-Known Member
N is used by the plant to manufacture chlorophyll molecules and amino acids for proteins. The chlorophyll molecule is a Mg surrounded by 4 N. The rest is C,O and H. N. When the plant is producing a lot of chlorophyll, growing green parts, it needs more N than when in flower.

Excess N can cause luxury consumption in some plants. IDK if weeds is one of those plants. Corn is for instance, where excess N can cause high levels of nitrates in the tissues.
 
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