The Grow Awards 2026 🏆

Back to Grow Questions

cal and mag canna coco

Smokeyboarstarted grow question 5y ago

Leafs I think its cal and mag but unsure. If it was how do I correct it. Do I say flush with 10 20 liters and then give it 1 mill cal and mag per litrr all canna nutes I use

Smokeyboar

Smokeyboar

Solved

Leaves. Color - Dark-brown

likes

GMSgrowsanswered grow question 5y ago

About 3 weeks left, I really wouldnt worry to much. If your still watering at 5.9 I would increase to 6.3 for this stage of flower. Cheers

likes

Complain

Selected By The Grower

Similar Grow Questions

Solved

What's this please. I have asked yesterday but this looks different. Please help me.

Leaves. Color - Dark-brown

3y ago

4

5

Solved

Brown spots What is going on here? Plant has been doing so well until this.

Leaves. Color - Dark-brown

2y ago

1

1

Solved

Jannis_Botanicum

Yellow/Brownish colored tips of leaves.So, my girl now is 11 days old, while i was looking at here i noticed that the tips of the second pair of true leaves is soightly yellow/brownish colored, im worried for my plant. Could it be a wind burn ? I have a ventilator in my tent which was blowing at here. I moved it now.

Leaves. Edges burnt

Leaves. Color - Yellow

Leaves. Color - Dark-brown

4y ago

2

3

Solved

NoFaceNoName461

Leaves problem at end stage Hi Guys, Once agiam I need your help, I’m at almost the end of the stage of Green gelato auto, And suddenly the top leaves started first to get kind of Bronze colour and now it’s even getting worst, What’s should I do and what might be the problem?

Leaves. Color - Dark-brown

4y ago

3

3

Solved

Browning on the leaves?I am worried about the leaf colour I feel like it’s slightly browned on the tips. Interested on what others that know what they’re looking at more than me think. Good chance I’m being over protective. I appreciate you.

Leaves. Color - Dark-brown

4y ago

9

8

Solved

Prosím pomôžte je toto problém?Je to problém prosím? Ak áno čo mám robiť

Leaves. Color - Dark-brown

6y ago

1

Solved

Barbieslapping808s

Deficiency or insect damage?Deficiency or insect damage? And from what nutrient or insect 😁

Leaves. Color - Dark-brown

5y ago

1

2

Solved

Leaves looking f’d?What’s happening with these leaves? It started last week and has spread. Only the leaves in the middle under the light. Week five of flower. Was using the same nutes and strengths since flowering started at 6ph. Upped the strength this week to see if it would fix and it got worse

Leaves. Color - Dark-brown

5y ago

2

Solved

Golden/Brown dots on leaves .. HELP :(Can someone please help me identify what this is and how to fix it? I assumed it’s nute burn but that would probably hit the tips no? Any help would be greatly appreciated.

Leaves. Color - Dark-brown

5y ago

2

3

Solved

Moin, bei meiner Größen Pflanze fangen die Blätter an von außen gelb zu werden und braune Punkte zu bekommen. Ist das ein Zeichen von einer überdüngerung? Alle anderen Pflanzen haben dies nicht. Oder zu wenig?

Leaves. Color - Yellow

Leaves. Color - Dark-brown

2y ago

2

2

Solved

What deficiency is this?Can someone tell me what this is being caused by? My suspicion is a potassium/ calcium deficiency? It's affecting mostly the larger fan leaves. Also, affected leaf stems are turning purple. Posted a pic of one of the leaves

Leaves. Color - Dark-brown

4y ago

3

Solved

Brown tips on seedling I'm having an issue with my seedling. It has these brown tips and is a bit strange on one side, what could this be? Appeared before nutrients was added. Light seems to be okay. Also temperature but been some fluctuations.

Leaves. Color - Dark-brown

5y ago

1

1

Solved

Brown spots on seedling What are the Brown spots on my seedling? I did not put mist or water on her.

Leaves. Color - Dark-brown

Setup. Seedling

4y ago

3

4

Solved

meangreenmachine

Spider mites?What do you think the problem with leafs are during my week 4? I have noticed the there was discoloration on some levels and somewhat looks like someone might be eating from underneath of the leafs.

Leaves. Color - Dark-brown

4y ago

1

2

Solved

Brown spots on leaves of joung plant Hy fellow growers. This is my first Hydro grow (DWC) its a Royal Cookie by RoyalQueen and iam feeding with Hesi Grow at the moment at 1.0 EC she is 3weeks old and i have Some problems with rust spots on the leaves. Could anyone help me out please ! Thanks a lot 🤙🏻

Leaves. Color - Dark-brown

6y ago

1

1

Solved

Ayahuasca leaves are turning brown in an rust color . Most of the plants are healthy but some of them are starting to curl and get this brown color. Can anyone help me what is going on . ( im using 600w lumii lights ) would appriciate it if anyone gives me a hint 💚

Leaves. Edges burnt

Leaves. Color - Dark-brown

4y ago

2

2

Solved

Too much light or other deficiency Too much light or some other deficiency? I’ve been having some issues with yellowing leaves and some other issues with browning and wilting/curling which I thought was initially nutrient lock but what I noticed is all four plants were not stunted and continued to grow normally.

Leaves. Color - Yellow

Leaves. Color - Dark-brown

Plant. Wilting

3y ago

4

Solved

DeepWaterGrower

Brown spots on some leaves Hi guys, today I found these spots on some leaves, few actually. I think it is an excess, in fact the EC in my DWC has been rising for a few days. Could you tell me more please? 😑

Leaves. Color - Dark-brown

3y ago

10

8

Solved

Purple stems and brown spots Brown spot and a brown tip on another leaf also purple spots on my stems pH was 8 with watering i found out i forgot to lower the pH

Leaves. Tips - Burnt

Leaves. Color - Dark-brown

Plant. Other

5y ago

3

Solved

Week 5 Flower Brown Leaves I’ve been dealing with this discoloration since veg. Does she need cal mag? Is this ph float I’m not catching?

Leaves. Color - Yellow

Leaves. Color - Dark-brown

2y ago

6