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yellow on top

krug

Member
Hi guys,It s the first time this happens to me...and I don t know what it could be...it starts from the edge of the leaves on the top of the plant..it s a PP five weeks in flower....thanks in advance...
 

DIGITALHIPPY

Active member
Veteran
MJ normaly starts turning yellow after 5-6 wks of flower...
wait for the leaf to finish turning yellow, and the stem will start to lignify, allowing the leaf to fall-off or be pulled off with extram ease...
your plant looks good though, dont do anything your doing good.

if it really really bugs you, or you want to flower them longer for the real narcotic high, then next crop give them extra nitrogen in veg stage, and give them veg formula for the first wk of flower. the leafs wont yellow till wk 7-8...

yellowing is good though, it leeching the nutes out of the leafs. itll make a cleaner-crisper smoke.
 

krug

Member
HI,thanks DH,I gave them veg nutes for the first two weeks of flowering....yeah I know they start to turn yellow in flowering,but usually are the lower leaves and from the stem...here it starts from the edge and the upper leaves...at first I thought it they were burned by the light,but it is not....it s a kind of "discoloration"...I don t know it s the first time it happens in many years of growing.....there is always something new to learn
peace.krug
 

DIGITALHIPPY

Active member
Veteran
lordjack said:
looks like phosphorus def. to me.
you could be right.
after a second look, that yellow is a bit bizzar.
i might have to re-evaluate my stance on the nitro.

id have to say its a combo of low-secondary elements(calcium,mag,iron,zinc) and that yellow could be a sulfer/iron def...
the rest of the leafs are a tad on the light green side, id add some sensical to a gallon of RO(3-4ml/gal) cal-mag will work but it wont have all the extras, such as Molybdenium or boron. if you dont have any of that then just add some epsom salt to water (tablespoon)(gallon)... it should help.


otherwsie thats a ncie looking MJ
 

krug

Member
The strange thing is that there is a discoloration of some tips of some of the upper leaves facing more the light....not on of all of them....and also on some other plants(from seed and not of the same strain) closest to the plants....that s because I thought they were burned...but it was not the right answer
peace krug
 

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