The Grow Awards 2026 🏆

Back to Grow Questions

Leafs with yellowish edges

HighZenBergstarted grow question 6y ago

Does anyone know what these yellowish marks on the leaf edges on duck #1 are ? At day 14 it´s very present. Also the leafs are a bit out of form in comparison with her sisters. I only gave tap water and BioTabs, night temperatures between 8-10 C, day temperatures 18-23 C

HighZenBerg

Solved

Leaves. Color - Yellow

likes

Fusionanswered grow question 6y ago

Loose the bio tabs, and replace with just spring water or tap water that has been sitting for 24 hrs.

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

Is it best to leave the yellowing leaves or remove?Do I remove yellowing leaves or leave them for stored energy for the plant. Thx.

Leaves. Color - Yellow

5y ago

3

5

Solved

First concerning grow issue / Leaf yellowing / Plant otherwise super healthy (Temp 24-27C) / Any thoughts on what's going on?Recent leaf yellowing, one week, spreading bottom to top slowly, but steadily. Soil water run-off: 6.5pH, RH: 50%, soil, watering every 3 days 1/2L water+FoxFarm 1/2 dose nutes+molasses. Waterbetween nute feed. Overwatering? Gnats negligible. Soil mites present, but the good kind

Leaves. Color - Yellow

5y ago

2

3

Solved

Hello guys! Overall the plant looks light green/yellowish and pretty small, with short internodes and bottom leaves with burnt and curled up tips. I give water every 3/4 days and commonly suggested fertilzers quantities. How can I let her recover and get bigger? Thanks :)

Leaves. Tips - Burnt

Leaves. Color - Yellow

Plant. Spaces between nodes

6y ago

3

2

Solved

Yellowing new growth!?New growth is yellowing is this nitrogen deficiency? And it’s only happening to this strain. Also growth in general has slowed. Temps. Have been getting down to about 66-67F Bc of the cold front that came through.

Leaves. Color - Yellow

5y ago

1

1

Solved

Yellowing leaves Leaves seem kinda yellow on one hand. The bottom right hand corner one looks like she needs CalMag but I'm not sure. All the photos have been taken under the same light. Used to over dose the nutrients to prevent burn but continually gave them 1mL/L calmag each.

Leaves. Color - Yellow

5y ago

2

2

Solved

Phosphorous deficiency or just pissed off due to nutrients?Leaves turning purple/ then yellow/ I haven't been doing FEED FEED FLUSH, is she angry? or is it phosphorus def? PH is 6.1 mixed, soil is 6.0 run off 6.1/ I cut floragro out due to nitro tox with my other plants// should I add back in? I don't know tds, i need to buy one ASAP.

Leaves. Color - Yellow

Leaves. Color - Dark-purple

6y ago

6

5

Solved

yellowing tips what could be causing this, its only on new growth on multiple plants

Leaves. Color - Yellow

9mo ago

1

5

Solved

Do any of my seedlings look too yellow?

Leaves. Color - Yellow

6y ago

2

3

Solved

Burning Edges/Yellowing and Drooping?The yellowing has gotten worse and I'm noticing slightly burnt tips/edges and some droop. Could this be burn/deficiency or over/underwatering? A combination? Is there anything I can do to fix this early or is it just a matter of giving them some time and less nutrients? Thanks!

Leaves. Tips - Burnt

Leaves. Color - Yellow

1y ago

4

2

Solved

Yellowing older leaves Is this a nitrogen deficiency? It's happening just on the 3 bladed leaves of the plant on the left. The plants look overall healthy, at least I think

Leaves. Color - Yellow

5y ago

1

Solved

Some of the tips of the leafs are turning yellow???

Leaves. Color - Yellow

7y ago

3

3

Solved

Day 20 Flower. Leaves curling Leaves curled over 12 hour light cycle. Ph 6.0. Ppm 950. I have been battling ph drop for a week. Lowered Ppm to 900 from 1100. Seems to have stabilized the ph and now the leaves are doing this. I’m looking to do the day 21 strip of most leaves tomorrow. Should I be concerned?

Leaves. Curl up

Leaves. Color - Yellow

2y ago

3

Solved

Leaf problems I think I did use too much fertilizers, whats happening here? https://growdiaries.com/diaries/180523-grow-journal-by-fiatchd

Leaves. Color - Yellow

Leaves. Color - Dark-brown

Feeding. Deficiences

2y ago

2

5

Solved

Manchas amarillas Le han aparecido unas manchas amarillas en las hojas inferiores que no se muy bien lo que es. Tambien acaban de aparecer los 1° pistilos y no se si tendra algo que ver, me podrían ayudar? Carencia? Sobrefertilización? Se han quemado por el sol directo? Normalidad? Gracias

Leaves. Color - Yellow

6y ago

4

4

Solved

NEW growth Yellow/Light Green on Auto Yellowing and lighter green appearing on the sweet zz new growth... moved further away from light and fed just water will give it a few days to see if improves. Any suggestions what this issue is ? Only on one of the plants ?

Leaves. Color - Yellow

5y ago

2

2

Solved

Is this Nitrogen deficiency?Is this Nitrogen deficiency? Mainly the lower leaves colored light green into yellow and just burst off. Now a few bigger leaves thought the plants are following the same pattern.

Leaves. Color - Yellow

3y ago

3

9

Solved

Seedling White widow yellowing a bit It look like my seedling is yellowing a bit. Any clues on what is going on? Might is just be the color of the strain?

Leaves. Color - Yellow

Leaves. Color - Pale

6y ago

3

4

Solved

TripleCcannabis

Iron deficiency?I suspect this is an iton deficiency due to excess phosphorus. Opinion? Im using GHE flors trio and added som Gro to make Gro Micro and Bloom in solution at a 1:1:1 ratio. Also added Cal Mend by Dutch Nutrients. Pic are 6 hours apart of new growth.

Leaves. Color - Yellow

6y ago

2

Solved

I give up or continue hi guys, this gorilla glue too has been fertilized too. do you think it is better to eliminate it? or I still believe it

Leaves. Color - Yellow

Germination. Substrate

5y ago

1

1

Solved

Yellow spots appearing... transitioning off amended soil, maybe didn't add enough Floramicro??? maybe more Cal-Mag? Thank you for looking :P

Leaves. Color - Yellow

5y ago

7

3