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Back to Grow Questions
Are my leaves light stressed?
Noahbear
started grow question 4y ago
Are my leaves getting too much light? They seem light stresses. Any input would be great- thanks
Solved
Leaves. Color - Yellow
Setup. Lighting
likes
ChitownCannaChica
answered grow question 4y ago
Maybe? Looking like ph and possibly heat/light
1 like
Complain
Selected By The Grower
Organoman
answered grow question 4y ago
Not light stress, but the beginning of magnesium deficiency. Giving cal/mag will solve this and prevent it from getting too much worse.
2 likes
Complain
Similar Grow Questions
Solved
Jardunny
is it okay to place it near the led lights? as many says that it could burn your seedling down.
recently im buying the 1000w full spectrum oem led from China. and i know it just “labeled” 1000w. im testing it on my plant, placing it near and seems like it doesn’t burn my babies.
Week 1
Setup. Lighting
5y ago
2
Solved
The_Stoned_Samurai
Transition to blooming - will it survive the weekend? ️
Will it survive the weekend without maintenance?.. My steamer is arriving beginning of next week, and without it humidity is low (50%) when I activate the air extractor…
Leaves. Curl down
Leaves. Color - Yellow
Leaves. Color - Dark-purple
2y ago
5
5
Solved
bigbud1080
Nitrogen Def with PPM 920?? - DWC Outdoor
My Blue Cheese is yellowing on the bottom leaves. I think it's nitrogen but I just changed the res last week, balanced the ph and set the ppm is 920. Canna Aqua A+B and Canna Rhizotonic Ignore wet leaves in photo, i use a foliar spray. Also have some burn, anyone seen this?
Leaves. Color - Yellow
5y ago
2
Solved
Chimken
How can I fix this lack of nutrients?
My current feeding water consists of: 1. 20 l of water 2. 40 ml of Canna Coco A 3. 40 ml of Canna Coco B Leaves definitely show something is wrong. What would you recommend to fix this?
Leaves. Color - Yellow
5y ago
4
3
Solved
Pucanz
Yeallow stripes 3rd week of flower
The plants begin to show signs of lack of some nutrient, and I can't identify what it will be ... the leaves are gradually starting to turn yellow ... will it be lack of cal-mag? Or other nutrient? Can anyone help me? Please!!
Week 9
Leaves. Color - Yellow
5y ago
1
4
Solved
BLAZED
Yellowing leaves, brown spots, tips pointing down and are brittle and burnt,
I got some leave problems. signs: - Leaves turning lightgreen/yellow. - Tips of the leaves are pointing/curling down and are brown and brittle. - Some leaves have a reddish colour, especially the leaves on the buds. - Some leaves got brown spots on them. Whats could be the cause
Week 12
Leaves. Tips - Burnt
Leaves. Curl down
Leaves. Color - Yellow
3y ago
1
4
Solved
Mrnelsonp
Beginners led light for 1 plant
Hi everyone, I decided to grow 1 plant indoors. I need some good advice about a budget friendly led light which is fine for 1 plant at the time :) Thank in advance! R.
Setup. Lighting
5y ago
3
2
Solved
Maskedcucumber
Brown leaves and red stems. Is this a calcium deficiency ?
I had an iron toxicity recently that may explain the brown parts but it may look like calcium deficiency. There are many red stems too but it maybe something else like the bad Ph and overfeeding from the previous month. What do you think ? Thanks !!
Week 11
Leaves. Color - Yellow
Leaves. Color - Red or pink
4y ago
2
2
Solved
1stForBuds
Buds touching light
Hi peeps.. another question but not so much a big problem... my blue cheese's are coming to the end of there 2nd week of flowering.. just 1 problem I have is 1 of my autos is still growing and is now touching my light I can't higher the light any more what can I do?
Buds. Other
Setup. Lighting
4y ago
1
3
Solved
MoMaximum
LED 45 W
Ist das Lichtspektrum der Lampe für die aktuelle Phase eigentlich angemessen oder werde ich Probleme bekommen?
Week 2
Setup. Lighting
3y ago
5
8
Solved
iwantabike
All day light
Until which week can i have 24 hours of light?
Week 1
Setup. Lighting
5y ago
4
3
Solved
Theia
Autos and light schedules
Last night my light timer broke. How sensitive are autos to their light schedule being messed with? i was on a 16/8 for the lsat few weeks. Last night my timer broke and i did not realise until midday. Now shes been in the dark for nearly 12 hrs!! Should i expect some issues ?
Week 9
Setup. Lighting
5y ago
3
3
Solved
Oldwied
Magnesium deficiency?
Week 14
Leaves. Color - Yellow
10mo ago
5
5
Solved
Blind_japanese
Distance from bulb or from reflector?
I found content about the distance from grow lights to the plants. I Know that using a 250w MH bulb the distance should be in a range from 20cm to 30cm. But i dont know If I should measure the distance from the glass of the reflector or from the bulb itself to the plants. Help!
Week 3
Setup. Lighting
5y ago
1
2
Solved
greenfingers007
On my 300w led light do i use both veg and bloom switches when the plant has surfaced through the soil
Setup. Lighting
5y ago
2
Solved
cookingwithninja
even out led bars or keep one 30 inches higher(losing 1/2 par)
Should I even out my 2led bars so one is 24-30 inches higher and both are even, or keep it how it is losing light from one side because light can not go through the top of a light bar? -sharing pars?
Week 15
Setup. Lighting
2y ago
1
1
Solved
SAC87
I am on day 53, I know it’s normal for plants to yellow later in flower, mine turn yellow very early like week 7. Some people way later and theirs are still very green. I recalibrated my ph pen week 6. Happened in under feeding too. Makes bud look awful. What am I doing wrong??
Week 15
Leaves. Color - Yellow
7y ago
1
6
Solved
Cannabis_Ninja
Weak yellowing leaves
Not 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?
Week 14
Leaves. Dropping off
Leaves. Color - Yellow
3y ago
1
1
Solved
Cannabingrowin
LED lights. What brand and why? what is the best LED diode? just the samsung ones? LM301
Lighting. I have 3 SpiderFarmer SF 1000 lights with 4 T8 barina 2ft around the edge of the tent. Does anyone recommend a different Lighting set up? Does anyone know how long these spiderfarmer lights will last? I have a 48x48x80 tent with 4 plants at the moment.
Setup. Lighting
4y ago
2
2
Solved
magnumalessio
Yellow Leaves
Ok guys, today is the 5th day without irrigate cause the soil was too wet.. now my leaves turn out like this. What do i need to do? Do i need to give them something? Every week i give them neem oil for invader so i think is not that problem.
Leaves. Color - Yellow
3y ago
3
6