By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Accept
Brown spots on leaves
RJS420started grow question 4y ago
Can anyone identify what this is? I discovered some green aphids yesterday but they're in small numbers so i figured that wouldnt be it, also sprayed with biological killer. A nutrition problem maybe? Too much or too little? Only affects bottom leaves so far.
Open
Leaves. Color - Dark-brown
likes
Answer
Similar Grow Questions
Solved
CRIM_mir
Day 46 NL Auto: Multiple Leaf Problems Developing after Possible Nute Lock and 2x Flushing — Should I feed again @ lower TDS? What’s wrong?Hi growmies!
Wks 3-5: overfed 3 plants
Wk 6: TDS after plain h20 1800-2300ppm; 2 flushes w/ gallon h20/plant
Wk 7: TDS readings 500-800pp, but 1 plant showing multiple types of leaf problems
I thought I fixed it, but now I don’t know what’s up or what to do? Thoughts?
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Leaves. Color - Mottling
5y ago
5
3
Solved
Mosherd7
Rusty spots mid-top of plants. A couple on each plant. Thoughts?(Check diary for more details)
Thinking calcium deficiency, also maybe magnesium deficiency on a few low yellowed leaves. Thinking it could be nutrient lockout? Feeding them 6.25 pH always. Gonna try 7.0 once and 6.5 for awhile. Thoughts anyone? Im still fairly new and learning
Week 10
Leaves. Color - Dark-brown
5y ago
4
4
Solved
Don1daz
Leaf going brownIs this a deficiency or a temp issue I'm at 79 during the day and drops to 65 at night the rest of the plant is fine apart from the bigger leaves
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Other. General questions
4y ago
2
2
Solved
ChuckyK
What is this brown spot?What is this brown spot? 18” from light. Just fed about 10 hours ago with dr.Earth 1-1-1 liquid solution watered in with 1/4 gallon of water. It is the only spot on whole plant. I know the temps are high. Wondering if it could be something else.
Week 4
Leaves. Color - Dark-brown
5y ago
3
4
Solved
m1kax
leaves brown stainsis my 1st time growing weed.
my plants start get this brown stains on top leaves 2 weeks ago;
i check ph was 5.95; so i think this could be calcium, because internet say they cant absorb calcium;
i have high humidity before the stains appear like 80% but was only 4 or 5 days.
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
2y ago
2
4
Solved
EirikBloodAxe
Stress or deficiency?Two leaves around main Cola. Yellowish with rust spots. Had its first day in tent with low humidity. Did some first time defoliation to increase air circulation. Stress or Potassium, Calcium deficiency?
Northern lights auto, 8-9 weeks. Canna Coco Nutrients.
Leaves. Color - Yellow
Leaves. Color - Dark-brown
4y ago
1
1
Solved
zerobane
Aeroponics system; fan leaves start browning on edge in 2nd week of bloom.Aeroponics system that my fan leaves start browning on edge in 2nd week of bloom every time (about 7 grows in journey). Is this normal? Should i be concerned and adjust nutes at all?
Or just selective trim any of the more "crispy" ones? Photo is 2nd-3rd week into bloom.
Week 8
Leaves. Color - Dark-brown
5y ago
1
1
Solved
Fordsie
Phosphorus def in veg?Phosphorus deficiency in wk 4 of veg? I noticed a few small discolored blotches on lower leaves 2 days ago and today it is a lot worse! Use flora trio, and 2 other plants in this run are under same conditions with same nutes. Could this be a pH issue? PH has been consistently ~6.
Leaves. Curl up
Leaves. Twisted
Leaves. Color - Dark-brown
4y ago
1
2
Solved
Greenbean420
Browning on leafs mid flower!?Hey ive got browning on 2 plants leafs mid flower? Could this be a Calmag deficiency or is it normal?
Only been using biobizz grow at 0.5ml/litre and bloom and topmax at 1ml/litre.
Thanks!
Leaves. Color - Dark-brown
Other. General questions
Feeding. Deficiences
5y ago
1
2
Solved
Milly808
Leafs getting brown color..what happened?Need help for this issue
Leaves. Color - Dark-brown
5y ago
3
2
Solved
rkomaaa
Heat stress? Pls some opinionIdk what's happening
Probably heat stress because is all th time more then 30c
Leaves. Dropping off
Leaves. Color - Dark-brown
3y ago
3
6
Solved
Mr_thegreen_420
PLEASE HELP ME BE A BETTER GROWERplease i need help, this is the first time this has happened to me in my grow I have 3 plants and each one with different problems,
all watered with a ph of 6.0 temperatures do not exceed 26.5, the products I'm using are from T.A Try pack flora grow, Flora micro, flora bloom,
Leaves. Color - Dark-brown
3y ago
4
3
Solved
MikeVA
Stressed plantHaving a deficiency or toxicity... Anyone know off hand what this is?
Leaves. Color - Dark-brown
3y ago
1
1
Solved
Deli_Weed
Mancha en hojaA que se debe que estén así algunas hojas? Es deficiencia o exceso? Regaba con 1000 ppm pero vi algunas puntas quemadas y color verde oscuro en las hojas así que lo fui bajando poco a poco hasta llegar a 500 ppm, y hoy note esas manchas(el agua drenada da 750 ppm)(coco y perlita)
Leaves. Edges burnt
Leaves. Color - Dark-brown
5y ago
3
3