The Grow Awards 2026 🏆

Back to Grow Questions

What does this color on the leaf mean

doobieandthedutchessstarted grow question 5y ago

I am noticing a few spots on a few leaves. Should I worry or not yet?

doobieandthedutchess

Solved

Leaves. Other

likes

ihatemycatanswered grow question 5y ago

can be a cal mag deficiency, but before check your ph (has to be something like 5.8) and the power of your light (too close/ too much power etc)

2 likes

Complain

Selected By The Grower

doobieandthedutchessanswered grow question 5y ago

I think it was a cal mag and everything else too. I believe I was just under feeding them. Thanks for the help

likes

Complain

Nastyfishanswered grow question 5y ago

Yeah looks like calmag to me also

likes

Complain

Similar Grow Questions

Solved

Brendanfromtherose

Should I start flushing!?Hi just wondering if I'm close to harvest time and should I start flushing my 4gallon DWC SYSTEM thanks, it's running on about 750 nutes and drinking about a litre water a day still, have amber hairs and milky tricomes, in my 9.5 weeks of auto seed, first time grower, TIA!

Buds. Too few

Leaves. Other

Plant. Other

5y ago

4

Solved

Day 5 Flower Defoliation Tips and recommendations ?!Day 5 flower should / can I defoliate (loolipop) and remove the lower shoots as a whole ? the one on the left is starting to change color to yellow, currently individual leaves ? not realy starting from the bottom

Leaves. Other

1y ago

1

Solved

Leaves discolouration One plant has discolouration and I don't know why. Every plant get the same water and is sitting in the same soil (50/50 biobizz all and light mix), no feeding till now.

Leaves. Other

6y ago

5

4

Solved

Leaf marks, LST and deformed.. is good, no? :D Expert, I need your advice! ;) 1.marks on leaves.. I've spotted some brown marks... is sign of juice burning? :P 2.there's another mark.. more dark color.. maybe was me managing them.. :P 3.LST.. was not good, right? :D 4.the little deformed.. should I keep or remove it?

Leaves. Other

Plant. Other

Feeding. Deficiences

6y ago

1

1

Solved

Did I defoliate too much ?Hi growers, Tomorrow my plants will start 12/12 (been reducing on monday - 16h, tuesday 14h) so I did some defoliation , it was a f*cking jungle in there ...i've attached some pics, was too much ? first time grower I've seen other with much heavier defoliation

Leaves. Other

Techniques. Defoliation

5y ago

1

1

Solved

Tâches sur les feuilles qui deviennent marron Bonjour, je suis débutant et je rencontre un problème sur une plante (Santa Muerte). Symptômes : tâches sur les feuilles qui deviennent marron. Je pensais à une carence en Calcium, celà vous semble-t-il correct ? Ou auriez-vous une idée du problème ? SVP. Merci. Bonne culture.

Leaves. Other

3y ago

3

1

Solved

air pump failure in hydro Hi ppl. I'm using hydroponics. 4 days ago electricity was off for 24 hour. and now plant looks like in picture. leaves are curling down and look unhealthy. anythink i can do to help it recover? thanks.

Leaves. Curl down

Leaves. Dropping off

Leaves. Other

4y ago

2

2

Solved

Is this a Calyx forming ?Is this a Calyx forming ? Day 30 Veg 18/6 51 RH, ILGM GSC Extreme auto with no preflowers

Buds. Other

Leaves. Other

Other. Other

5y ago

1

2

Solved

Northen light small yellow spots Small yellow spots on old leaves Pre fertilised soil Sf 1000 23-25 Celsius 45%-60% hum 53 cm light distance 22 days since sprouting No fertilizer added Ph 6-7 15 lt plastic pot

Leaves. Other

5y ago

3

4

Solved

TheRealHankHill

Brown spot brown spot dont know why bit worried she only almost 3 weeks old

Leaves. Other

4y ago

2

Solved

Small node leaves cut Should I snip off the lowest node leaves to focus energy

Leaves. Other

4y ago

1

4

Solved

Nutrients problem!Any one can explain this? I'm in 3 week of veg and I'm using Advanced nutrients; Grow 1ml Micro 1ml Bloom 1ml B52 0.5ml Mother earth 0.5ml Tarantula 0.5 Piranha 0.5 Voodoo juice 0.5ml Ppm 635 Ph 6.1

Leaves. Twisted

Leaves. Color - Dark-brown

Leaves. Other

5y ago

2

5

Solved

Super thrive floral spray Hey guy's so I used super thrive supplements plan b for my girls is it safe to continue spraying? Just cause leaves are kinda shinny lol TIA

Leaves. Other

4y ago

2

Solved

Thrips or other insect ?Hello I have a problem with 3 of my plants, on all 3 plants I have white spots and holes. Red spider or thrips? I tried neem oil, but, it only worked for 2 days. I have nettle manure and horsetail. Can I spray, or are the plants too young? Thanks

Leaves. Other

Plant. Other

5y ago

1

1

Solved

What’s up with my leaves!(aeroponics)Not sure what’s going on here

Leaves. Color - Dark-brown

Leaves. Other

5y ago

2

Solved

6 den 12/12 Ahoj, mám otázku.. Nechat nebo probrat listí?

Leaves. Other

2y ago

4

Solved

My leafs have small damage, some holes, some brown, so silver? What do you dude and dudes think it is, do i need to worry? Even the newer leafs have some damage, Cheers!

Leaves. Color - Dark-brown

Leaves. Other

5y ago

1

1

Solved

Cookie_monster12

Can anyone point me in the direction of what this may be? Is it a deficiency or toxicity? Increased her feed then within a few days this appears, I accidentally let the soil get too dry before watering which I think has possibly caused lockout maybe

Leaves. Other

3y ago

3

2

Solved

Cultivatelove21

Potassium deficiency?Needing some help. I have this going on in my flower tent. They are in week 6 of flower. Of the 4, I have only one showing this bad. She seems to be locked out on me as well. Could this be a potassium deficiency? Seems to only effect upper fan leaves.

Leaves. Other

3y ago

1

2

Solved

Pest Control/Prevention before flower?Noticed this on one of my leaves, I already had to deal with the mite situation with my cucumber. Are they the cause of this? or another pest possibly? What methods other then neem oil and my homemade spray can help me fend them off even more?

Leaves. Other

Other. Bugs

6y ago

3

3