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
Week 8 (4 weeks into flowering) - Possible Nitrogen / Cal-Mag issue?
BavarianBarbarianstarted grow question 1y ago
Plants show signs of what i assume to be a deficiency. Stopped feeding nitrogen Week 7 according to schedule. Symptoms are not on every leaf but some the upper foliage. Yellowing, burnt tips and rusty spots. My guess is lack of Cal-Mag & Nitrogen. Is my guess correct?
Solved
Leaves. Tips - Burnt
Leaves. Curl up
Leaves. Color - Yellow
likes
Gnrlymsntrp81answered grow question 1y ago
Calcium defficiency and a bit too much light.Also salt burn is a possibility because of the burned edges. I think you got salts accumulated in your medium that lock out cal/mag.
Organomananswered grow question 1y ago
Definitely a severe calcium deficiency.
Plants are also hungry for potassium and phosphorous.
1 like
Complain
Scrubbyjimbobanswered grow question 1y ago
Nitrogen deficiency will show up at the bottom of your plants before newer growth. Check your runoff pH and EC/ppm, it's probably a pH swing in the media or salt buildup issues.
1 like
Complain
Similar Grow Questions
Solved
Anonymous_2022
Deficiency issues with BiobizzHi Growmies hoping for some advice please..Ive been using organic feed for the last month or so (BioBizz) since doing so finding deficiency issues in veg and flower grrrr, PH around 6.3-6.8 in soil and run off around 6 -6.2.. I see the dont do a Pk booster any recommendations?
Week 3
Leaves. Color - Yellow
3y ago
3
4
Solved
DeutschBud
Problem with leafsI need help with this problem on the leafs Legendary OG Punch
Week 8
Leaves. Tips - Burnt
3y ago
2
2
Solved
Tbag2020
Leaves not looking healthyI have this plant on 20/4 with PH 5.5-5.8 its an auto from fastbuds, not sure why the leaves keep burning like this? Can someone help please
Leaves. Tips - Burnt
Leaves. Color - Yellow
5y ago
2
6
Solved
PersasH
Yellow lower leavesHi! I went out for the weekend and when i came back most of my plants had yellow lower leaves. The weekend has been very very hot and im wondering if it was lack of watering or is it a lack of nitrogen? Some in one plant the leaves were dead.
Week 7
Leaves. Color - Yellow
5y ago
3
3
Solved
tripa_grower
Hi guys, I’ve noticed the leaves of 2 plants are curl upwards. I think overwatered, Day 9 I’ve watered two times (wrong) and after checking Day 8 too. At day 10 I've didnt watered, and today I've seen the soil dry, so I putted 100ml water. What do you think is causing this curl?Week 2
Leaves. Curl up
6y ago
4
3
Solved
johdlong
Heat and light stress?I think this is heat/light stress. The tips of the leaves yellow and point upwards, while some leaves are trying to flip over. Temps get up to ~80 right under the light, and this bud gets greater than 2000 µmol, but she looked like she loved it up until this point
3y ago
2
Solved
Biobizzkid
Deficiencies before flippingTrying to diagnose for my next fee.I am running ro for the first time cause my water quality was causing issues.running fox farm ocean forest and sunshine #4 aggregate plus.got purple stem on leaves ,little rusts spot on only a few and cal and mag deficiencies I think
5y ago
1
2
Solved
Dakushdoctor97
Yellowing leavesIs the yellowing of the older leaves normal? Or should I be concerned?Week 10
Leaves. Color - Yellow
5y ago
1
1
Solved
Randyb4
Nutrient lock out?Well watered my plants with great value drinking water. Ph 4.11. Didn't check ph until week 3. Currently upping it to 6.5 after I found the issue. Does this look like nutrient lock out? They were in root Riot starter plugs. And I fed the some clonex and great white microbs.
4y ago
5
3
Solved
Greenlady
Whats going on with the leaves?Haven't started with nutes yet. After this pic I repotted into 9l/ 2,37 gallon pot.
Week 3
Leaves. Color - Yellow
5y ago
1
1
Solved
Farmer99
help deficiency or overfertilization?Hello since last time i would say that there have been great improvements ... it seemed to go well but now i'm starting to see some problems ... i can't tell if it's deficiencies or light stress the plant looks nice strong can you give me a hand?
Red stems...
Leaves. Tips - Burnt
4y ago
2
2
Solved
mrhat2001
Guys been going great until I checked today. My top leaves turning grey white and crunchy on 2 plants. 3rd plant ok. What do you think too much Kool Bloom? To much heat from the light?? I don’t think it’s the latter I decided to flush for 2 days to clean it out??Week 11
Leaves. Curl up
6y ago
2
1
Solved
Juschiln420
Help with diagnoses leaf yellowing and yellow spottingCan anyone help me in the right direction on what the plant is telling me she needs. I'm getting yellowing on lower leafs and spotty yellowing on upper leafs. I thought maybe light burn for spotty yellowing and raised light a few inched with no change. I appreciate the help!
2y ago
10
12
Solved
Rockminer
Can’t figure this one outWhat is going on with this one? The rest are fine.
Leaves. Curl up
5y ago
1
5