The Grow Awards 2026 🏆 
Cal Mag deficiency?????
illyrianstarted grow question 5y ago
Cal Mag deficiency?????
Open
Leaves. Curl up
Leaves. Color - Yellow
likes
Answer
TimTheTerpMananswered grow question 5y ago
Looks like either a pH issue effecting your nitrogen uptake or you just need to feed it a bit more. I'd put my money on a pH lockout. Also that looks like some pest dmg of some sort. 🤘😤
likes
Complain
Similar Grow Questions
Solved
BBZGrows
Curling new leaf growth, slight yellowing.I’m getting some strange curling leaves seems to be upwards. It’s only on new growth and I’m seeing a more yellowing color around the tiny curled leaves.
It could be light burn, heat or humidity as the only thing of change over the past days is a random spike in humidity.
ThanksLeaves. Curl up
3y ago
3
3
Solved
Casualguy
Yellow spotsI’m showing more of this discoloration on 2 more leads from a couple weeks agoWeek 6
Leaves. Color - Yellow
4y ago
1
3
Solved
Cannabis_Ninja
Weak yellowing leavesNot every single time but quite often my plants are turning yellow in the middle of flowering. It starts from bottom and follows to top. I can basically “take off” leaves off stem and the upper ones getting dry and brittle. I’m also quite sure the ph level is correct. Any guess?3y ago
1
1
Solved
BiteAway
Leave issuesWhat could this be?
Temperature: 73 fahrenheit, 23 C
Humidity: 55%-65%
Lamp to plant: 60-70cm
No nutrients yet
Watered every 2 days with ph 6.5Leaves. Curl down
Leaves. Color - Yellow
4y ago
1
3
Solved
DabbertGlobberfield
Problems showing up in week 5 flowerI have a problem developing and showing signs through this week. Looks like at least a calcium and a potassium deficiency in one plant and a another deficiency just starting in another. Not sure how to fix this. First 8 are one plant, last 2 are another. Photos taken over a week3y ago
1
6
Solved
Aragon
Rust spots on leavesWhat are these weird rust spots? I'm guessing too much cal-mag?Week 4
Leaves. Color - Yellow
5y ago
1
1
Solved
Concision
Help with burned leaf tipsThe tips of some of the leaves have begun to dry, curl, and look to be dying (see pics). I think it's some sort of nutrient burn, but I'm unsure. I water every other day w/ a solution of Miracle-Gro 24-8-16 at 50% recommended concentration. Used distilled H2O last 2 waterings.5y ago
3
1
Solved
Onandon
Kill or cure - yellow leaves from day 5Hi all.
Started a 6 plant grow on the 17th dec but one of the plants is struggling.
For the first 4 days they were under clear plastic beakers to up the humidity. On day 5 they were all looking fine but this guy had a few brown marks on the leaves and have now turned yellow.Week 2
Leaves. Color - Yellow
5y ago
4
Solved
AkagamiWP
What am i doing wrong? and what shall i do?form a month i keep having a problem with my plants. the leaves are getting brown spots then they get all brown and start to crumble. i flushed the plants 2 times and no improovment. the watering ph is 6.45. i'm using advanced nutrients that i always used. temperature is 25 degreLeaves. Edges burnt
Leaves. Color - Yellow
Leaves. Color - Dark-brown
3y ago
2
4
Solved
Luntis
yellow leavesGood day, please what could be the cause? It only has a few flowers, the rest are ok.Leaves. Color - Yellow
1y ago
2
1
Solved
2020Grower
Please help :(Can anyone please tell me what deficiencies I have here ?Leaves. Color - Yellow
Leaves. Other
6y ago
2
Solved
kaiabel
Hi growmies, FD 41 can you check the progress?Can you check my flower day 41. I think they getting better just the NYCD still looking a bit strange on the leaves. Keeping the feed up and wait till they show better color.
NYCD third pic
Maybe you guys see something im missing.
Thanks and have a great day. Peace3y ago
3
3
Solved
No_nuts
Windburn des ka?If you can tell me if this is windburn left me know if Im being paranoid or a solution to this.Week 1
Leaves. Curl up
6y ago
2
2
Solved
BUDZ1
Les Feuilles deviennent jauneHello, j ai un grand besoin de conseils,
Je constate aujourd'hui que beaucoup de feuille commence à jaunir
Est ce normal à ce stade de la floraison? ( début de sénescence)
Est ce que je les retire?
Trop d engrais ?
Engrais: Deux arrosages sur trois ( voir journal)
Ph eau : 6.2Leaves. Color - Yellow
3y ago
4
4
