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Cannabis Infirmary

Learning how to grow cannabis can be tricky. Learn how to identify, diagnose, and fix common problems faced while growing marijuana plants.

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Sticky Threads

Sticky

Root Aphids, Fungus Gnats, and other fun bugs (ID PICS)

We Solidarity
Mar 27, 2013

22 23 24

Replies: 471

Views: 224K

Oct 21, 2023

Scolymia7

Sticky

Dudded, Stunted, and Runted plants...

We Solidarity
May 19, 2014

48 49 50

Replies: 981

Views: 218K

Apr 10, 2024

BuffNuts

B

Sticky

The Charts--Helpful charts for making nutrient deficiency diagnoses

Seamaiden
Dec 31, 2013

13 14 15

Replies: 293

Views: 126K

Oct 26, 2021

smokedareefer

Sticky

Welcome to the Fungal, it gets worse here everyday - Fusarium Solani

silverhaze
Nov 1, 2012

8 9 10

Replies: 199

Views: 74K

Jun 10, 2023

shaganja

Sticky

Bulb Mites?? WTF!?

Blue Dog
Nov 13, 2013

7 8 9

Replies: 161

Views: 71K

Nov 9, 2023

JKash

Sticky

Overuse of Eagle 20 and systemics makes resistant fungi

Seamaiden
Apr 14, 2011

7 8 9

Replies: 177

Views: 66K

Oct 2, 2022

Judaz

Sticky

Forbid 4F timeline

budboy299
Sep 28, 2011

2

Replies: 22

Views: 53K

Oct 11, 2023

Jmaes Mabley

K

Sticky

i need suggestions on a good microscope

knubs
Jan 20, 2014

2 3 4

Replies: 76

Views: 35K

Oct 28, 2022

Aqwut

A

Sticky

mace
Jul 31, 2008

Replies: 19

Views: 16K

Mar 19, 2023

Xakmo

X

Sticky

Integrated Pest Management (ipm), Pesticide Use And Safety, & Managing Pesticide Resistance

Blaze
Sep 5, 2015

Replies: 19

Views: 7K

Aug 28, 2020

1stonedman

Normal Threads

R

Tiny white spots on the leaves

ReadySetGrowD9
Jun 28, 2010

2

Replies: 30

Views: 275K

Sep 20, 2021

Playerofgod

Cannabis leaf tips curling down

OCKushCollector
Feb 4, 2013

Replies: 19

Views: 234K

May 30, 2020

mulisha007

S

mangled, deformed and twisted leaves

Stumpy
Sep 16, 2013

2 3

Replies: 41

Views: 219K

Mar 22, 2022

LibertyBadger

M

Using Superthrive - Tips and Advice

Mr. Smith
Nov 29, 2008

2 3 4

Replies: 71

Views: 177K

May 13, 2023

KjRav

K

G

leaves edges curling up! pics.

ganja_guy52
May 18, 2011

Replies: 19

Views: 148K

Aug 12, 2022

Jahshaman

J

How to kill your thrips!

true grit
Apr 21, 2010

2

Replies: 38

Views: 102K

Sep 5, 2016

katelyn

K

Need to kill some mites fast! Possible russet mites!!

kushtrees
May 7, 2012

4 5 6

Replies: 115

Views: 99K

Nov 22, 2020

Smithygreen

D

droopy after transplant

donastro
Jan 17, 2012

2

Replies: 23

Views: 91K

Jan 2, 2022

ArealBoy

S

Neem oil is killing my plants

space101
Jun 1, 2012

2 3 4

Replies: 73

Views: 90K

Feb 3, 2017

Seamaiden

S

Steel Erection
Jan 28, 2011

2

Replies: 35

Views: 86K

Nov 23, 2016

edaisson

E

SUPER MITES!! When FLORAMITE wont work...

COCOLOCO
Oct 7, 2010

4 5 6

Replies: 114

Views: 81K

Jun 16, 2016

Chance Last

C

H

My buds are turning brown ....what's up??

Hartbun2
Aug 11, 2013

Replies: 7

Views: 81K

Aug 13, 2013

Seamaiden

T

Green Caterpillars eating my buds

the new guy
Aug 9, 2011

2

Replies: 39

Views: 80K

Yesterday at 2:01 AM

whitewedding

W

Met 52 stops Root Aphids

Onespark
Oct 31, 2011

14 15 16

Replies: 309

Views: 80K

Jan 16, 2016

yellowsky

Y

Topping Clones?

OCKushCollector
Apr 27, 2012

2

Replies: 22

Views: 79K

Aug 28, 2019

Funk junky

Spider Mites 6 Weeks in Flower - Only Getting Worse

pork
Dec 12, 2010

2

Replies: 39

Views: 78K

Oct 1, 2015

Seamaiden

What mighty wash does to mites

altimood
Nov 23, 2011

2

Replies: 30

Views: 71K

Oct 4, 2016

DrMcSkunkins

logic needs help small white bugs crawling in my soil

logic
Aug 31, 2011

3 4 5

Replies: 80

Views: 68K

Sep 1, 2018

Rootbound

What's the Best Spidermite Fogger?

G Star
Mar 22, 2011

Replies: 15

Views: 67K

Apr 7, 2011

Mmmmasonite

M

Applied avid too strong

Cannanugget
Dec 24, 2011

2

Replies: 35

Views: 67K

Mar 20, 2021

Grapefruitroop

Leaf serrations curling up?

Capulator
Aug 2, 2011

2 3 4

Replies: 67

Views: 66K

Dec 8, 2020

Slickrick82

B

How do I eliminate springtails?

botanist13
Aug 13, 2010

2

Replies: 36

Views: 66K

Dec 24, 2019

mrthoopai1

M

Avid / Abamectin residual

max_well
Feb 7, 2012

4 5 6

Replies: 101

Views: 66K

Dec 29, 2020

kaka

D

Leaves standing straight up

diesel23
Mar 11, 2010

2

Replies: 23

Views: 65K

Mar 29, 2018

Landslide

H2O2 & Powdery Mildew

Jboys3
Jan 26, 2014

2

Replies: 32

Views: 63K

Sep 12, 2019

Phjeff

P

Why are my Seedling leaves are curling down?

Creep420
Feb 10, 2020

Replies: 13

Views: 62K

Aug 9, 2021

Kl420

R

Doktor Doom? Anyone tried?

radical farmer
Apr 12, 2010

2

Replies: 34

Views: 59K

Aug 6, 2020

cottageman

AZATROL/AZAMAX VS. MITES A SCAM??

cheaplastic
Jun 1, 2012

2 3 4

Replies: 63

Views: 58K

Jul 14, 2018

Bbang420

Too much soap in soap/water solution?

Hatcheteer00
Jun 27, 2014

2

Replies: 21

Views: 57K

Aug 21, 2021

Terilee

S

HELP!! Powdery mildew at 42 days flower!!!

Surfr
May 13, 2010

2

Replies: 25

Views: 55K

Aug 30, 2019

C.Hess

C

How Late Is To Late To Top A Plant?

sumerianak
Aug 12, 2016

2

Replies: 22

Views: 54K

Aug 14, 2016

sumerianak

B

Rust spots on leaves!! help!

bueno
Apr 6, 2009

Replies: 18

Views: 53K

Sep 5, 2013

Seamaiden

Controlling or Eliminating Powdery Mildew

Prime C
Oct 6, 2013

Replies: 9

Views: 53K

Oct 4, 2017

Pozi

P

Misting My Plant? Ok Or Not

Grow flow
Nov 11, 2015

2 3 4

Replies: 61

Views: 53K

Nov 15, 2015

Grow flow

Azamax For Spider Mites

SOURCOOPER
May 6, 2017

2 3

Replies: 55

Views: 53K

Aug 22, 2017

AJGirlsGrow2

A

New Growth Leaves Turning Yellow BIG PROBLEM HELP!!??

AliasAO
Apr 23, 2011

2

Replies: 22

Views: 51K

Apr 27, 2011

crom

R

Relaxed420
Mar 18, 2011

2

Replies: 20

Views: 51K

Jun 29, 2020

prtcleman

D

fungus gnats and Diatomaceous earth

d420
Sep 22, 2009

2 3

Replies: 41

Views: 51K

Nov 18, 2009

JH420

B

Why Are By Sugar Leaves Turning Brown?

Badwolf
Nov 13, 2016

2 3

Replies: 53

Views: 50K

Sep 14, 2021

zigzagtop

1 mm white larvae crawling in soil occassionally jumpy

0xygen
Dec 16, 2010

2

Replies: 24

Views: 50K

Feb 11, 2011

mellokitty

M

To much spinosad

ronvmpc
Oct 24, 2010

2

Replies: 20

Views: 49K

Jun 24, 2017

jovizaza33

J

R

Sudden Taco Leaves Only On New Growth

Ronnie88
Apr 7, 2015

2 3

Replies: 49

Views: 49K

Feb 8, 2021

alex.huang

How to use Merit 75 wp

budfriend
Sep 15, 2010

2

Replies: 33

Views: 46K

Jul 28, 2020

jibs

Please assist me? Ugh

ThatCrazyStonerChick
Jan 29, 2020

37 38 39

Replies: 767

Views: 46K

Dec 5, 2020

oldskol4evr

M

downward leaf curl

MisterAvocado
Apr 14, 2012

2

Replies: 37

Views: 46K

Aug 5, 2023

LoveGrowingIt

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