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
After noticing calmag deficiency in some other lad...
Denzulstarted grow question 6y ago
After noticing calmag deficiency in some other ladies I preventativly hit everyone with cal mag. Few days later see yellowing on leaves (pic above). Could they need more cal mag? Also looks like could be nitrogen deficiency? Thanks for any help with this issue.
likes
Momgrowsthechronicanswered grow question 6y ago
If the yellowing is only affecting only lower, older leaves it could be that you need a little more CalMag (not sure what you are currently giving them). 2.5 mls/gallon is an average maintenance dose while some plants require 3-5 mls/gallon to remain healthy and green all the way through till flush. If the yellowing is affecting the entire plant all at once- I would lean more towards a Nitrogen/all nutrient deficiency. From what I can see above, you seem to be giving your plants the correct dose of nutrients so if the problem persists I would recommend a flush with PH’d water followed by a watering with light nutes. This usually works for me and I continue on through the rest of my grow to a successful harvest. Hope this helps and all the best growing forward!
Similar Grow Questions
Solved
EmberWeed
Leaves curling up and down and yellow leavesWhat could be causing this?
Leaves. Curl up
Leaves. Curl down
Leaves. Color - Yellow
3y ago
1
6
Solved
LeastExpectedGrower
Yellowing mid-plant?My auto blueberry just started showing some yellowing mid-plant. It's first/second week of flower. Thoughts on what she needs? None of the others have it (Tangerine Dream & Northern Lights). Doesn't show signs of overwater. More deets below.
Week 6
Leaves. Color - Yellow
4y ago
2
4
Solved
superskunkyfunk
Yellowing leaves, some twisting, early in veg?Could anyone help me diagnose this plant. Idk if it’s nitro defic., heat stress, or overwatering or all 3. Temps during the day have been getting up around 86-88 daytime and only down to maybe 74 at night in the tent. I try to let the top of the soil dry out when watering as well
Leaves. Curl down
Leaves. Color - Yellow
Plant. Twisted
4y ago
3
3
Solved
Ancient_Genetics
They were slightly overwatered, the soil PH of 7.1 to 7.3, lacking phosphorus, maybe magnesium to. Branches from the sides are stretching, but I noticed thet lower leaves started to turn yellow a little at both. If anyone knows good advice to help them out, I would be grateful.😅
Leaves. Edges burnt
Leaves. Curl down
Leaves. Color - Yellow
3y ago
3
4
Solved
Maincard
Yellow leavesHello it is day 36,i had pH issues but i corrected it to 6,5 but the leaves are still yellowing .I currently use canna nutrients, Flores, boost, ryzotonic and canazym. I use tap water and I'm growing in a soiles medium,(coco, peat moss and perlite. Thx
Leaves. Tips - Burnt
Leaves. Color - Yellow
3y ago
3
3
Solved
Young_agronomist
Всем привет !
У моей девочки пожелтели листья , что это может быть ?Week 1
Leaves. Color - Yellow
3y ago
2
3
Solved
TarheelBandB
Leaf DiagnosisCould someone help diagnose this leaf problem. It's less than 2 days old. Aañnnnnd, 2 days ago I accidentally set the ppm to 1700? I've since dumped the solution and got it back down to around 700 ppm. I'm hoping someone give me some triage pointers. Should I trim those leaves?
Week 4
Leaves. Color - Yellow
5y ago
4
3
Solved
HFelgerud
Auto OG dying off? 9 weekAs You may notice- problem with OG-1. I burned her once, was a mistake,when suddenly she demanded more watter unnecspectedly and i gave her higher dose of everything,instead of watter. Before was perfect plant (if im not mistaken). Wattering- once is light in the hands,by lifting
Week 9
Leaves. Color - Yellow
4y ago
1
4
Solved
4EverGreen
Losing vigor and yellowingSorry I don’t have a diary for this grow. I did collect some runoff on one of my girls so hopefully this can help for giving assistance. This is only my 3rd grow and the first 2 went very well but this one isn’t, all plants have lost vigor, are growing slowly and are yellowing.
Leaves. Color - Yellow
7mo ago
5
6
Solved
BobRoss
Leave problemsLowest leaves are turning slowly yellow, ph is 6.5.
Week 13
Leaves. Color - Yellow
3y ago
4
8
Solved
KISSOU
Color leafHello everyone I have a question here the plant (on the right) turns yellow we can see it in comparison to the other This plant has been flowering for 3 weeks and is 53 days old. I use the nutrients from the Biobizz range, I water twice a week with it. Why yellow leaf? 😳
Week 8
Leaves. Color - Yellow
5y ago
3
3
Solved
Findthelorax
Nitrogen Toxicity?Nitrogen toxicity? What does this look like to you? I gave a full set of nutes 3 days ago and it looks like the spots/yellowing are getting worse. I watered today with plain ro water ph 6.8 until runoff and tested it, ppm was over 900 ph was 6.2.
Leaves. Curl down
Leaves. Color - Yellow
4y ago
1
3