Cola leaves burning then dying mid flower

chillok

Well-Known Member

• Dec 13, 2016

• #1

I'll call them sugar leaves but I think they're fan leaves, the bigger pinky finger sized leaves that shoot out of colas. They burn and die mid flower.

I previously thought it was Chinese LED light burn, but I'm using 3590 COBs at a very safe distance now. Temps including leaf temps are very good (75-78F).

I use Botanicare pure blend pro, liquid karma, and CalMag with every water, but feed lightly, like 1/2 recommended. Overall good health with minor burn tips on other fan leaves. Could it be P excess? I figure the colas are getting the lion's share of nutes, and despite Botanicare's very mild formula, maybe too much?

 

Attachments

• 
  _20161213_060435.JPG

  3 MB · Views: 48
• 
  _20161213_060340.JPG

  3.1 MB · Views: 39

chemphlegm

Well-Known Member

• Dec 13, 2016

• #2

looks to me that plant is happily overfed and finishing soon, and if so, you shouldnt be using ANY nutrients towards the end of flower. nothing but plain water the last couple weeks in my dirt. I use Botanicare also until then

 

J

jay5coat

Well-Known Member

• Dec 13, 2016

• #3

Agreed, see the tips are burning but everything else looks great, might be a light feeder.

 

whitebb2727

Well-Known Member

• Dec 13, 2016

• #4

Check trichomes with scope. Looks about ready.

 

chillok

Well-Known Member

• Dec 13, 2016

• #5

Thanks yes this one and the last run were both light feeders. I thought I was running nutes lightly enough but I guess not! It creeps up on me, all seems good then those leaves burn. I'll lighten up next time. Yep just watering now, trics are cloudy, I'm letting her fatten up a bit though, probably chop this weekend with two more waterings.

 

K

KryptoBud

Well-Known Member

• Dec 13, 2016

• #6

It looks like you have a heat or humidity problem the way your leaves are rolled up.

 

chillok

Well-Known Member

• Dec 13, 2016

• #7

KryptoBud said:

It looks like you have a heat or humidity problem the way your leaves are rolled up.

Click to expand...

Temps okay but very low humidity. I've tried a few things but I def needed a beefy humidifier. I'm gonna let her finish, but wish I could have kept her happier. I may bite the bullet and get a humidifier

 

Tupapa

Well-Known Member

• Dec 13, 2016

• #8

Like others sed overfeeding. Good job!!

 

chillok

Well-Known Member

• Dec 13, 2016

• #9

Tupapa said:

Like others sed overfeeding. Good job!!

Click to expand...

Thanks she's really packed it on. The low humidity has been killer though, I thought I was running a weak enough feed but man she's transpiring like crazy. Always learning with this stuff..!

 

K

KryptoBud

Well-Known Member

• Dec 13, 2016

• #10

chillok said:

Temps okay but very low humidity. I've tried a few things but I def needed a beefy humidifier. I'm gonna let her finish, but wish I could have kept her happier. I may bite the bullet and get a humidifier

Click to expand...

I hear ya, I deal low humidity every winter too.