Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Calcium Deficiency?
JeremyM
started grow question 6y ago
Regarding plant #1. Can you confirm this in Calcium deficiency? I just changed out the reservoir this weekend. Didn't notice the spots until recent.
Solved
Week 5
Leaves. Other
likes
DeadwebsiteBoringcommunity
answered grow question 6y ago
Calcium excess.. Check your local water report.. See how much calcium you have in your water to begin with.. Use cal-mag more sparingly..
1 like
Complain
Selected By The Grower
JeremyM
answered grow question 6y ago
Cut my Cal/Mag in half this week, new leaves are not showing these spots.
1 like
Complain
Similar Grow Questions
Solved
OnlyTaito
Spotted Leaves
My ladies looked good until recently, it has been very warm the last few days. Then they began to let their leaves hang down (didn't get enough water) and gradually turned yellow, now they are getting spots. This is my first grow and I am not sure what it could be.
Leaves. Other
2y ago
3
2
Solved
Coughy
Early signs of Calcium deficiency?
See a deficiency here? The whole leaf is very mildly spotty, like just a shade off... seems to be getting worse but very slowly. I had to filter the pics I took, were over exposed.
Leaves. Other
6y ago
1
1
Solved
Phaleg
Is it a good idea to remove the first 2 or 3 internodes vegetation that are closer to the soil and show small leaves with 3 points?
Week 5
Leaves. Other
Techniques. Other
4y ago
6
6
Solved
Zeolite
Inside of seed stuck on cotyledon leaves keeping them together
Has anyone ever had the inside of the seed stay on and keep the two cotyledon leaves together? The outer hard shell has come off. I've been spraying it to try and soak it off but it's quite hard. Anyone ever successfully deal with this or will it just pop off on its own?
Week 1
Leaves. Other
Setup. Seeds
Germination. Substrate
5y ago
2
2
Solved
GanjaFarmar
Basically im seeing some deficiencies on plant number #1. It can be calmag but not too sure! Ive also been using filtered reverse osmosis water, which ive heard can cause deficiencies. Im thinking i might have boron deficiencies on my plants by the way it looks. Can someone help
Week 2
Leaves. Other
7y ago
6
4
Solved
Tuankt847
Could it be some kind of insect?
Could it be some kind of insect?
Leaves. Other
4y ago
1
Solved
Papa_T
Foliar spray
I want to introduce some epsom salt foliar spray for Penelope and two clones I have in veg at the moment. From what I understand around 200-250 PPM is a good range. What is optimal PH for foliar sprays. How often can it be used? Or what can I use as a habitual spray?
Leaves. Other
Feeding. Other
5y ago
1
2
Solved
Cucumbersinmybackpack
Mutations??
What causes mutation? Is it the strains? Will silica do this to the plants? I'm interested to know exactly why this happens or if anything triggers it.
Week 2
Leaves. Other
4y ago
7
4
Solved
StDeacon
Leaves are spotty
@Ttrichome Here is the picture of the yellow glue trap with the black little flies
Leaves. Other
6y ago
1
4
Solved
timber03
Is this a cal/mag issue? How much and how often should I give it? Going to recalibrate ph pen when sauce arrives. Living soil w/ recharge and NLS flower top dressing. Any help would be greatly appreciated.
Week 5
Leaves. Other
4y ago
3
3
Solved
TensorDestroyer
My plant has some leaves with a yellow/black tone. I suspect I made a mistake one week when I watered with nutrients ann then passed 3 days before I watered only with water. ¿Do I should cut those leaves that it is showed on the 3rd/4th photos (week 5)? Have a nice smoke!
Week 5
Leaves. Other
8y ago
1
1
Solved
rosemary420
How can I kill spider mites?
I found tiny red spiders under my leaves and was wondering if there are any homemade remedies to kill them. The top of my leaves have began to spot and i’m not sure what to do. Please help!
Leaves. Other
6y ago
1
Solved
Ionic20
How's she looking now?
I think she's looking good now and recovered well. But are these pest eggs or the? Thanks
Leaves. Other
Plant. Other
6y ago
2
3
Solved
DrJoint
Clones with weird spots !
I took two clones from my NL from the side of my plant where I could notice few weird looking leaves. Since they were cuttings they had this spots and I cannot figure out what that is. The plant is growing as normal but looks weird. Is it something that could be fixed ?
Leaves. Other
6y ago
1
1
Solved
MMSC16
Are rust spots a concern for harvest?
Hi! Rust spots appearing on fan leaves - Week 9 Autoflower - 5th week of flower. I'm hesitant to add anything to the soil so close to harvest. I'm using Gaia Green Organic dry amendments. Is this normal and part of 'fade' process? Will this damage yield or potency? 6.3PH
Week 9
Leaves. Other
3y ago
4
4
Solved
Noobftp
do I cut lower leaves? I have blue cheese in 8 weeks
Leaves. Other
6y ago
1
1
Solved
Grey_man_2074
Q) What techniques can I employ to maximise yield? I'm not sure they're all the same strain...
Week 6
Leaves. Other
8y ago
3
5
Solved
Momgrowsthechronic
I am not sure what’s going on with plant A (pictures above). Does this look like a CalMag deficiency? The CalMag at 5mls per gallon seems to be working but I’d love to know what some of you other growers think? Thank you for reading this post and thanks for any advice given. 🙏
Week 4
Leaves. Other
7y ago
5
4
Solved
PurpGod
Dark green shinny leaves
New grow is dark green shinny leaves curling down a few brown tips.. I gave her 20oz of water 6.5. Roots organic soil. Only plant with this issue
Week 3
Leaves. Edges burnt
Leaves. Curl down
Leaves. Other
5y ago
2
3
Solved
GarenMaster420
Spots on leaves after spraying with Plagron Vita Race
On the 4th of March during lights ON I sprayed my plants with distilled water with Vita Race (3ml/L). I noticed that after it dried up there are some weird spots on the leaves that were left behind (see picture). Any idea if that can lead to problems later?😅
Week 5
Leaves. Other
3y ago
4
3