The Grow Awards 2026 π 
Its K problem ?
CRiSPrGrowanswered grow question 5y ago
Hey there BRL, youβre right that at this time in the flowering the plant needs K. But the yellowing is still magnesium deficiency . Same reason as before , and the reason for that is that there is a fair amount of βinertiaβ meaning it takes some time for the problem to stop spreading , the plant to recover , etc. You might be better off reducing yet further the light schedule , or try to muscle through by increasing a bit more the cal mag ... It's a tough thing to bounce back from a mistake on growing , that's the problem. Hope this helps.! π
1 like
Complain
Similar Grow Questions
Solved
Misanthrope
Leaf Discolouration in Flowering5 weeks into flowering, grown outdoor in potted soil with regular nutrients. I've been spraying with Epsom salt sol'n once/twice per week for 3 weeks to treat what I thought was Mg def. Yellowing is starting now on upper leaves. Suggestions on what other steps to take?Leaves. Color - Yellow
Feeding. Deficiences
4y ago
2
2
Solved
Pjones
Brown spots and brown tipsHello. First time grow. I am seeing brown spots and brown tips on leaves. The spots are only on a couple of older leaves. Brown tips on most other leaves. It is a gorilla glue auto in soil. I suspect nutrient problem, but would like other opinions.Leaves. Edges burnt
Leaves. Tips - Burnt
7mo ago
7
Solved
Marley03
Rust spotsWhat could be the cause of these rust spots? Only 1 plant is showing this. Same strain. They get same feeding. Ph is ok. 4 weeks into flowering.Leaves. Color - Yellow
Leaves. Other
4y ago
1
Solved
Scrubs1983
What type of nut deficiency is this?Hi ...im growin an auto lemon day 80 lately it s showing these spots on upper leaves spreading towards the lower ones i stopped feeding anw since im in the end of flowering period ..but its good to know what is going on. thank you guys!Leaves. Other
5y ago
2
2
Solved
MrGreen92
Rusty spots on fan leaves overnight, what is it? οΈLast night I used some old but clean looking wire to bring branches in to the main stems.
This morning there's now little orange rusty spots everywhere. Is a soil grow, 6.3 pH used and same run off with Cal Mag every other feed. Taken the wire of at 6am in anger, was it that? π‘5y ago
2
2
Solved
Reno_BE
Dots on leaves, what causes this?__ QUESTION 3 __
Hi I spotted some yellow-white dots on some of the leaves (not all). Any idea what's up with the plant?
I assume it's a shortage of something?
Probably this is not too big of a problem but I'd like to know what it causes. Any opinions?
Thanks in advance.
ByeWeek 8
Leaves. Other
5y ago
2
3
Solved
korn420lie
Leaves burned after spraying a cocktailTo repel aphids I sprayed garlic infused in alcohol with water, already did this few times without side effects. But this time I added several drops of tea tree essential oil. Is it possible that the essential oil has burned the leaves so much or is this some nutrient deficiency?1y ago
3
4
Solved
heythere12345
Yellow leaves and brown tipsHow does it look? Why the yellow leaves and brown tips?Leaves. Tips - Burnt
Leaves. Color - Yellow
4y ago
2
3
Solved
Wings
Are the cotyledons supposed to go away? Mine are looking pretty unhealthy.Week 2
Leaves. Other
6y ago
2
4
Solved
4ako4ako
some kind of deficiency?πππ
is this some kind of deficiency?Leaves. Curl down
Leaves. Other
Feeding. Deficiences
1y ago
3
Solved
FeebleSnane
Yellow leaf edgesI have a couple plants that are about 5 weeks old, and one has started getting yellow edges around the leaves. I feed them with worm tea, kelp, and calmag every other week, but it's a light dose so I think this is a deficiency and not a toxicity.Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Color - Yellow
10mo ago
1
1
Solved
Dillsnills
Should I up the phosphorous and cal-mag? Plant is taking alot of water right now so I'm assuming it needs more nutes, advice plzz.This plant can't get enough water, I usually water every 2-3 days this one is every day, should I give more phosphorous and cal mag, have some spots on the leaves and she is taking alot of water right now, phos and cal-mag def? Advice input on what to do appreciated.Setup. Strain - Autoflowering
Feeding. Deficiences
Feeding. Other
4y ago
2
2
Solved
Flamingo21
Is 9 leaves normal?My plant got 9 'fingers' on its top leaves, is that normal?Week 6
Leaves. Other
4y ago
6
6
Solved
buddhi_coop
Grow LightsIs it okay to use an LED Light 1000 watt (4x4x80" tent) & a UV Light 1000 Watt in a 4x4x80" grow tent for 3 plants. I want more light, I have plants growing slowly so I'm hoping to adjust the amount of light I have would speed up their growth. LED is white spectrum & UV blue-vegLeaves. Tips - Burnt
Setup. Strains - Photoperiod
Setup. Lighting
5y ago
4
3
Solved
dzirofy
Slow growth, terrible appearanceA week after seeding. Hawaiian Snow (GHS), planted it in a coco coir (washed, buffered with calmag 500 ppm), watered with T.A FloraCoco until drainage 400ppm. Lighting 60W, up to lamp 40cm. Temperature during the day is 32C at night 24C. I just want to finish this :(Leaves. Other
Other. General questions
Plant. Other
2y ago
2
8