THCFarmer.com
121,130 Members Log In Register
Log In Register

Brown spots on large fan leaves

  • Thread starter Thread starter Cannabisfan
  • Start date Start date
  • Tagged users Tagged users None

Brown spots on large fan leaves

Cannabisfan 7 Replies 1,348 Views
Page 1 of 1 · Replies 1–8 of 8
1
Cannabisfan

Cannabisfan

Posts
5
Reactions
4
Joined
Jan 24, 2020
Points
3
#1
Hey all, new to this site/growing and looking for a little help. I’m growing northern lights auto, and it’s in week 3 of flower, two large fan leaves look like the picture below. What do you think the problem is and how to I fix this? Also my feeding schedule I’m following is posted below as well. Thanks!
 

Attachments

  • brown-spots-on-large-fan-leaves.png
    brown-spots-on-large-fan-leaves.png
    147.7 KB · Views: 131
  • brown-spots-on-large-fan-leaves-2.jpeg
    brown-spots-on-large-fan-leaves-2.jpeg
    245.4 KB · Views: 212
#2
Please post pic with real lights so we can see colors of leaves better
 
#3
Cannabisfan said:
Hey all, new to this site/growing and looking for a little help. I’m growing northern lights auto, and it’s in week 3 of flower, two large fan leaves look like the picture below. What do you think the problem is and how to I fix this? Also my feeding schedule I’m following is posted below as well. Thanks!
Click to expand...

Note the chalky residue was when I sprayed cal-mag after covering flowers since my original thought was calcium deficiency. Only 2 large fan leaves are like this.
9914E882 0963 415E B321 B9B338EB2AAD
 
#5
Soil or water or coco or other? I use soil & gh flora but my feeding is lot more than yours. 2 tsp micro, 3 tsp bloom, 1 tsp grow per gallon plus 5-6 tsp medicino calmag. I've also never run autoflowers, they may be different. They look deficient of p or k to me
 
#7
DreamsOfDiesel said:
Soil or water or coco or other? I use soil & gh flora but my feeding is lot more than yours. 2 tsp micro, 3 tsp bloom, 1 tsp grow per gallon plus 5-6 tsp medicino calmag. I've also never run autoflowers, they may be different. They look deficient of p or k to me
Click to expand...
Thanks for your help, and this is organic soil mixed with a good amount of perlite.
 
#8
Jack og said:
Potassium def, and signs of media being too wet if in media, if in hydro, check the roots what color are they and is there a stagnant pot/ res
Click to expand...
Damn maybe not enough drainage in my bucket! I’ll have to see if I can drill more holes for that. I’m using organic soil and I added a good amount of extra perlite. I’ll get that potassium under control, thanks for the advice!
 
Page 1 of 1 · Replies 1–8 of 8
1
Back
Top Bottom