The Grow Awards 2026 🏆

Back to Grow Questions

strange yellow leaves

gogocrackstarted grow question 3y ago

hello, what's wrong with these leaves? they are in flower in the 3rd week and the leaves have become like this in two days. Do I need calmag?

gogocrack

gogocrack

Open

Leaves. Color - Yellow

likes

Answer

Storkanswered grow question 3y ago

Potassium deficiency, Change your nuts to Bloom or u can make banana peel tea, banana peels in pieces place them in water, and then in a fridge for 5 days

1 like

Complain

Nemo23answered grow question 3y ago

When the pH around the roots jumps up and down, it can stress the plant and cause brown spots to appear on the leaves.This seems to often happen when the pH swings too high or low.

1 like

Complain

Similar Grow Questions

Solved

yellowing upper growth what do you guys think about the yellowing? now when I think back, I once did a grow on coco, which had also yellowish growth.. my soil mix is about 10% coco. ph about 6.4 ... I tend to underfeed my plants...

Leaves. Color - Yellow

5y ago

1

1

Solved

Hi! im experiencing yellowing and falling leaves in all the strains i planted 5 weeks ago. Only lower leaves. Thought it could be nitrogen deficency but already fed them with N nutrient and still slowly yellowing from bottom to top. All plants are in early flowering stage.

Leaves. Dropping off

Leaves. Color - Yellow

5y ago

3

3

Solved

What happen with my leaf.What Happen with my leaf. Week 2 of growing from germination. Thank you.🙏

Leaves. Color - Yellow

4y ago

7

6

Solved

Supplement CAL MAG ?If I had a Cal & Mag deficit and replenish it with liquid supplements after about a week, will the plant recover? If so, after what time? or Maybe you think its something else? NOT CAL MAG ?? Help me ... ;)💩

Leaves. Color - Yellow

Leaves. Color - Dark-brown

6y ago

2

1

Solved

Any ideas?Anyone got any ideas what's going on here?

Leaves. Color - Yellow

Leaves. Color - Dark-brown

5y ago

4

5

Solved

Yellow leaves Any suggestions or tips for finding out why this 1 plant (strain- Alcapulco Gold) has been yellow since day 1 of Veg Stage. My 7 other plants are fine.

Leaves. Color - Yellow

4y ago

5

5

Solved

Желтеют листья.Всем привет! Выращиваю первый раз, сорт Auto Opium, растению месяц, нижние листья начали желтеть и вянуть, это связанно с переходом на цветение? И за какое время растение будет готово к харвесту? Заранее всем спасибо за ответы😄💚

Leaves. Color - Yellow

4y ago

1

Solved

Leaves look a bit yellowish and dopey.Sorry was not able to attache a new photo to the previous question, so I just created a new following question. What am I doing wrong with my plant?

Leaves. Color - Yellow

4y ago

1

1

Solved

bottom yelow leaves on end of 4th week Im at the end on week 4 and my plants clearly shows signs of flowering, i gave her 1.5 ml/l bio grow and 2ml/l bio bloom, after sometime i noticed that some bottom leaves on each plant are turning yellow or have some yellow spot on tip, what could be the problem?

Leaves. Tips - Burnt

Leaves. Color - Yellow

6y ago

1

1

Solved

Yellow part on leaf Part of leaf yellow

Leaves. Color - Yellow

6y ago

2

2

Solved

Nitrogen overdose?We have 2-3 weeks may be, or less. Its the problem?

Buds. Other

Leaves. Edges burnt

Leaves. Color - Yellow

2y ago

1

1

Solved

Don't know why does it keep on turn into yellow from old leaves, also it affected tips of younger leaves for now. Looks like i need something to do with it, but i don't know what, so some suggestions and advices needed. Thanks

Leaves. Color - Yellow

8y ago

7

6

Solved

Sick plant Help, my plant really looking sick and new leaves not looking that healthy. I have been feeding CalMag every other feed and only 850 ml every 24hrs and soil is dry on top layers before watering. Not sure what’s going wrong here. Much appreciate your help guys

Leaves. Color - Yellow

6y ago

2

2

Solved

CalMag Deficiency?Hi, I've noticed these spots appear on one of my plants and a burnt end on it's neighbor. Do I need to up my MagCal?

Leaves. Tips - Burnt

Leaves. Color - Yellow

4y ago

1

2

Solved

Yellow leaves at the end of flowering, should I worry?I can use some help on this one. I am pretty new. The variety is called Hawaiian Staycation. It has done well and we are in the last week or so of flowering. It got a bit dry in the tent and the leaves really yellowed. I plan on harvesting next week, should I be concerned?

Leaves. Color - Yellow

4y ago

4

2

Solved

Idk if this is normal or not My white widow auto is in week 4 of flower and her leaves are yellowing. I just gave her a dose of bloom last night with ph water to see if that would maybe help but honestly idk if that was even the issue. Someone help 😫

Leaves. Color - Yellow

5y ago

2

2

Solved

Yellow streaks on top coal leaves Light stress? Anyone seen this before? Its mainly on the top leaves near the light. All the other leaves look fine. Guessing it's not difficency. Running mars hydro ts600 plant was about a foot from light. Also feeding with every water. Cheers

Leaves. Color - Yellow

6y ago

1

Solved

Black spots and light green leafs Anybody knows what the black spot in the new leaf grow in center is.never seen it before.also very light green leafs with 2.i use light mix and never had this issue before.use rain water.

Leaves. Color - Yellow

Leaves. Color - Black or grey

4y ago

3

4

Solved

eduard_shevardnadze

All newborn leaves are turning too much yellow All newborn leaves are too much yellow. Do you have any idea what problem could be? 7-10 days ago turned to 12/12 for bloom phase. I think its light burn, BUT even lower newborn leaves are yellow.

Buds. Other

Leaves. Color - Yellow

5y ago

2

Solved

Leaf going brown Is this a deficiency or a temp issue I'm at 79 during the day and drops to 65 at night the rest of the plant is fine apart from the bigger leaves

Leaves. Color - Yellow

Leaves. Color - Dark-brown

Other. General questions

5y ago

2

2