The Grow Awards 2025 🏆

Chat

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

Recommended

Back to Grow Questions

Weak yellow leaves with red Stems

Lazarousstarted grow question 5 years ago

Weak yellow leaves on the bottom with red stems. I use 1/3 tap water, 2/3 filtered water for its pH levels. Could that be my issue? I feed twice a week Fox Farm Big bloom 2ml/l, Grow Big 2ml/l and Cal/Mag 0.5/l. Cal/Mag with every watering to make up for the soft water.

Lazarous

Solved

Leaves. Color - Yellow

likes

The8thChevronanswered grow question 5 years ago

Too much calmag can lockout potassium, so that's possible. That Looks like it might be you first true leaf. If it is and you're already into week 4 or beyond, losing that leaf is completely normal. If it's still early within 2-3 weeks old, it's almost definitely nute burn as they don't need nutes until the end of week 3 usually.

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

Hello everyone. I am in the final stage of the procedure ,I need about 2 or3weeks more.I have some problems with the leaves and 2 banches! Some leaves become totaly yellow but these leaves was in the middle of the plant not on top ! The last 2 days inside the tent i have 32°c

Leaves. Color - Yellow

Plant. Other

5 years ago

1

1

Solved

Help validating what this is My plant seems to have developed some kind of deficiency/excess. I researched and think that it's CalMag deficiency, added CalMag to my nutes (1ml/l). Just wanted to check in with the experts here to get a second opinion. The growth seems slow I'm afraid I may have stunted her 🤦

Leaves. Color - Yellow

5 years ago

1

2

Solved

Top Leaves are becoming yellow from the inside out.Hi, anybody know what the problem is with this plant? The top leaves are becoming yellow/white from the inside out. Also the leaves have a different shape. The plant is in open soil and I give her water and sometimes some veg nutrients. Thanks in advance. (Last picture)

Leaves. Veins - yellow between

Leaves. Color - Yellow

5 years ago

4

2

Solved

People heeelp! I have a diesel autoflower and its flowering 3 weeks. My leafes are turnung yellow but only ones nort on bud but those "free". I think its not N because i fed her same first 3 weeks. So heelp

Leaves. Color - Yellow

5 years ago

1

3

Solved

Seedling help.Hi, all 1st timer needing help (already lol), can any1 please help, not sure what Is wrong with my seedling but 1 cotyledon doesn’t look healthy, any help would be much appreciated. Complete newbie so bear with me😬. Thanks in advance!

Leaves. Curl down

Leaves. Color - Yellow

5 years ago

2

3

Solved

Not looking good for her ️Help! She is starting to develop yellow spots on her leaves now 😢

Leaves. Color - Yellow

5 years ago

1

2

Solved

Yellow spot with a tiny hole Just curious as to what this might be a sign of? Its yellowed and has a tiny hole in the middle. Thank you and happy growing.

Leaves. Color - Yellow

5 years ago

1

4

Solved

Yellow spot with tiny hole I have a 4 week old Strawberry cheesecake auto with a leaf spot that has a tiny hole in the center. Its in a 5 gallon bucket of miracle grow potting soil. I just started feeding it with Open Sesame this week. Ive just been watering it with ph 6.6. Any ideas? Thank you

Leaves. Color - Yellow

5 years ago

1

1

Solved

Slow/stunted growth Growth has been very slow the past 24hrs, almost stunted. Its start of day 17 and i watered until wet on morning of day 16. Almost all day there was no growth and cotyledons are starting to yellow, is this normal for this stage? what can I do to help growth?

Leaves. Color - Yellow

Plant. Other

Setup. Seedling

5 years ago

1

3

Solved

Yellow leaves Started seeing new leaves turning yellow at the edges on this BCN Critical Auto. I think it's a calcium deficiency based on my research. Would love to get a second opinion and some tips, if possible. Many thanks.

Leaves. Color - Yellow

5 years ago

5

7

Solved

Yellowing Leaves? Nutrient deficiency? Fixable?Is this a nutrient deficiency? I'm 3 weeks into flowering. 2 or 3 weeks away from harvest. I'm using Biobizz Grow, Bloom and Top Max. Is it an issue that can be fixed? Or do I just need to get it right next time?

Leaves. Color - Yellow

5 years ago

12

5

Solved

Should I flush? (Overfeeding)I think I have overfed my 2 dwarfs. Theyre showing signs like very stringy skinny new growth and yellow leaf tips. Theyre still growing and I dont want to stunt their growth, so all I want to know is if it is necessary to flush. Please tell me how to flush if so, thank you.

Leaves. Color - Yellow

Feeding. Deficiences

5 years ago

3

4

Solved

Yellowing of leaves In 16 days lower leaves are yellowing and on one a burnt tip. 3lt fabric pot 150ml water eod ph 6-6.5 candy kush exp. been slowly happening for 4-5 days. Humidity can’t be sorted for 2 weeks

Leaves. Tips - Burnt

Leaves. Color - Yellow

5 years ago

2

2

Solved

Yellowing leaf There is yellowing in a single leaf. What is it and what is the solution? Thanks.

Leaves. Color - Yellow

5 years ago

6

4

Solved

yellow dots Can anyone tell me - what do the yellow dots on her leaves mean? (very visible on day 16)

Leaves. Color - Yellow

5 years ago

1

2

Solved

nute burn?I am seeing bute burn on 2 of my blueberries and not sure why. I have not added any notes and it's a 3:1 mix foxfarm and coco coir/perlite. Can the soil be giving off too much right now? It's only on 2 and the other 2 looks fine. It's not letting me post pic

Leaves. Color - Yellow

5 years ago

1

5

Solved

Do my plants look okay i have been using calmag last couple days

Leaves. Color - Yellow

5 years ago

3

3

Solved

Leaf started turning yellow during this week. The plant in the overall growing doesnt get too much sun, and im not using any nutrient yet. Added once some general fertilizer. Later on those leaves fell down

Leaves. Color - Yellow

5 years ago

1

1

Solved

Hi, Yellowing only on one leaf. It was fine 2 hours ago. She is on the balcony during the day and sees direct sunlight. What is happening? What should I do?

Leaves. Color - Yellow

5 years ago

1

2

Solved

Nitrogen deficiency Hi! My LSD and the Blue Gelato 41 start to develop some yellowish patches on the leaves... Do you know what it could be? for me it looks quite like nitrogen deficiency but i'm not sure... Should i try to take care of it or should i leave them like this in their final 2 weeks?

Leaves. Color - Yellow

5 years ago

6

4