Vote Now 🏆 for 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

Recommended

Grow QuestionsWeird Spots

Weird Spots

BongRipstarted grow question 4 years ago

Hello! Does anybody know what these spots are? It's on some of my low fan leaves. What is the issue and how do I solve it? please help! 🤡

BongRip

BongRip

BongRip

BongRip

BongRip

Open

Leaves. Color - Mottling

likes

Answer

MedicalCannabisCultivationanswered grow question 4 years ago

I guess it is low phosphorus levels. As I can see the spots are on the lower leaves & the leaf stems are a bit reddish. Hope you could solve it in the meantime. Here is a good reference chart: https://i.redd.it/qhrj8qmjl7az.jpg

likes

Complain

Similar Grow Questions

Solved

Manchas en hoja Hola! Aparecieron estas manchas en una hoja de una GG#4 de zamnesia en su quienta semana vegetativa. No es algo que me preocupe, ya que la planta tiene una apariencia sana y crece vigorosa. Pero nunca vi este tipo de manchas y me gustaría saber su posibles motivos. Un saludo!

Leaves. Color - Yellow

Leaves. Color - Pale

Leaves. Color - Mottling

13 days ago

3

4

Solved

Hydroponics, i need a second or third pro opinion. Just a Deficiency? bad pH? (I alreadt did a partial water reservoir change tho)Yoyoyo! If someone of knowledge could help me here, I would be grateful So I think it's a Magnesium deficiency, caused either from my too low pH (5.2) or too much CalMag (only used 1,5ml on 10L) I gave a more in-detail description on my diary. lower leafs are "crispy", not smooth

Leaves. Color - Mottling

15 days ago

6

4

Solved

What is going wrong?Last few days spots are showing on the leaves and growth has become less. Any ideas what it can be? Feeding 3ml alga grow per 1,5l each time i water them.

Leaves. Color - Mottling

5 days ago

4

Solved

Nährstoffmangel?Hallo, habe ein Problem bei meinem grow.Bt33Habe 3 Stecklinge in 13l Topf (FEM Mimose, Gorilla ,Wedding) Zelt : 120x60x180 Lampe :Sanlight evo 4×120 (265w)100 % 45 cm Wasser 12l alle 3 Tage calmag+Bittersalz+algamic+activera Dünger Ghf Bloom Calmag+Phosphormangel glaube ich?

Leaves. Color - Yellow

Leaves. Color - Pale

Leaves. Color - Mottling

6 days ago

2

1

Solved

Phosphorus Issue?Slurricane is having a phosphorus issue and not drinking water as fast after transplanting. I’ve been feeding cal mag every water and thinking it’s a root zone issue. Should I apply stop watering and apply a follar feed of 3 part general hydro nutrients?

Leaves. Color - Mottling

18 days ago

3

3

Solved

Interveinal chlorosis and dead spots on leaves, deficiency?This started appearing about a week ago, after I watered until runoff with plain water. It's on a couple of leaves higher up both plants and seems to be progressing. I am feeding advanced nutrients Grow Micro and Bloom but have been using very low doses, like 1ml/L.

Leaves. Veins - yellow between

Leaves. Color - Mottling

2 months ago

6

3

Solved

Leafseptoria, ore something else!?Is this Leaf-Septoria? Had the small spots since a few days (looks like they don´t get really bigger) but some leafs start to die like picture 2. looks to me a bit like calcium-deficit, or i´m i wrong?

Leaves. Color - Dark-brown

Leaves. Color - Mottling

4 months ago

4

4

Solved

Normal or should I be careful?🤔First time I see these little dots on the leaves, can anyone identify them or is it nothing to worry about, as I'm thinking? 🧐🤔

Leaves. Color - Mottling

5 months ago

2

Solved

Root rot or pH imbalance?This blueberry muffin (f) plant was doing well until last week when it started deteriorating. Its grown on a mix of cocopeat, vermicompost, perlite mix and fed on compost tea and cal-mag mix. I might put it down eventually but I checked the pH and it was 5!

Leaves. Edges burnt

Leaves. Color - Pale

Leaves. Color - Mottling

6 months ago

4

2

Solved

light spots 3 week, light spots appeared on some leaves, the plant grew normally, and there seemed to be no other problems, what is it? Thank you

Leaves. Color - Mottling

5 months ago

2

2

Solved

moisture I have a humidity problem. It's usually between 75 and 70. I want to buy moisture resistant seeds from the region I live in and I am thinking about what I should not do to overcome this problem. I started the new 2nd wind blower, hopefully it will be enough.This is my first prod

Buds. Other

Leaves. Color - Mottling

6 months ago

5

3

Solved

Why do my plants only have that light greenish yellowish look at the top and why is one of my plants also having those sick leaves at the bottom?2 of my 3 plants are a bit yellow-ish at the top since about a week. Plant 1 also had a couple of sick leaves at the bottom that I did remove. Those leaves had brown/dark spots, felt dry like paper, had very purple stems and did smell more like hay. More info in my report.

Leaves. Wilting

Leaves. Color - Yellow

Leaves. Color - Mottling

8 months ago

5

3

Solved

Yellowing cause?What could this yellow and brown spotting be on the uppermost leaves? Also the curling? They are autos, i am giving them half dose of bloom and phospherous nutrients, as well as half dose cal-mag, temperature isnt overly high, watering every 2-3days until runoff.. bit confused

Leaves. Curl up

Leaves. Color - Mottling

7 months ago

1

1

Solved

Brown Spots on Leaves I’m noticing some light brown spots on my leaves. After researching it seems that it was either 1) Manganese deficiency 2) calcium deficiency or 3) overwatering. I don’t think I’m overwatering. It could be the nutrients but would like input!

Leaves. Color - Dark-brown

Leaves. Color - Mottling

8 months ago

5

3

Solved

Calmag or Potassium deficiency Starting to show hard yellowing on plant #2 looks like it can be calmag Deficiency or Potassium Deficiency. I gave them a bit extra calmag a few days ago and it seams like things are not improving too much.

Leaves. Color - Yellow

Leaves. Color - Dark-brown

Leaves. Color - Mottling

8 months ago

7

3

Solved

Mottling Leaves. What's the problem?Leaves are mottling, but otherwise healthy. Has anyone seen this before?

Leaves. Color - Mottling

9 months ago

4

3

Solved

Week 2: One of the plants still doesn't look good + other beginner questions :)Second week and one of the plants has weird spots + leaves curled. Not sure what to do. Do I overwater? Is it some kind of disease or deficiency? No idea. Also, when should I start feeding the plants? And how much water do I need at this point? 😥

Leaves. Curl up

Leaves. Color - Yellow

Leaves. Color - Mottling

9 months ago

6

6

Solved

Spotting on leaves Anyone know what the spotting is on my plant 1? First time growing and unsure what I’m doing wrong so far

Leaves. Color - Mottling

9 months ago

4

4

Solved

Healthy?Sie wachsen zur Zeit sehr schnell allerdings haben manche Blätter Flecken wie man sehen kann. Die ersten Wochen habe ich leider mit einem zu hohen Ph Wert gegossen (ca 8) dies habe ich jetzt aber angepasst und sie bekommen ihre 6,4.Vielleicht Nährstoffmangel? Bio Grow hinzufügen?

Leaves. Color - Pale

Leaves. Color - Mottling

9 months ago

3

3

Solved

Is that not enough calcium?How can I recognise that it is only a calcium deficide? The plant is also the largest and the only one with such deficiencies. Could the plant also be lacking manganese or magnesium and what can I use to compensate for this? Are pests or diseases excluded?

Leaves. Color - Mottling

8 months ago

3

3