• Home
  • Forums
  • Medical Cannabis Cultivation
  • General Indoor Growing
  • White chalk like marks on leaves

White chalk like marks on leaves

  • Thread starter Thread starter Vic413
  • Start date Start date Nov 11, 2020
  • Tagged users Tagged users None

White chalk like marks on leaves

Vic413 Nov 11, 2020 13 Replies 3,786 Views
Page 1 of 1 · Replies 1–14 of 14
1

Vic413

Posts
29
Reactions
7
Joined
Nov 11, 2020
Points
3
Nov 11, 2020
#1
Hello everyone! I’m running my first grow using female autoflower seeds dropped straight into the soil using a 5 gallon fabric pot and the soil im using is fox farms ocean forest. These plants are a few days from two week old and I noticed white spots all over some of the leaves almost chalk like and I’m wondering if it’s a pest problem or maybe nutrient deficiency I have noticed a small amount of tiny flys start to pop up here and there but I’ve sprayed neem oil every other day about 30 min before my lights are scheduled to shut off to prevent burns on the leaves. Anyone have any idea what could be causing this problem? I also didn’t PH the water for the first week started to ph it to around 6.5-6.7 the second week no nutrients added only what the plant has got from the soil.
 

Attachments

  • white-chalk-like-marks-on-leaves.jpeg
    514.3 KB · Views: 453
  • white-chalk-like-marks-on-leaves-2.jpeg
    409 KB · Views: 257
  • white-chalk-like-marks-on-leaves-3.jpeg
    441.3 KB · Views: 265
Quote Reply

RR1

Posts
227
Reactions
357
Joined
Jun 24, 2018
Points
63
Nov 11, 2020
#2
Vic413 said:
Hello everyone! I’m running my first grow using female autoflower seeds dropped straight into the soil using a 5 gallon fabric pot and the soil im using is fox farms ocean forest. These plants are a few days from two week old and I noticed white spots all over some of the leaves almost chalk like and I’m wondering if it’s a pest problem or maybe nutrient deficiency I have noticed a small amount of tiny flys start to pop up here and there but I’ve sprayed neem oil every other day about 30 min before my lights are scheduled to shut off to prevent burns on the leaves. Anyone have any idea what could be causing this problem? I also didn’t PH the water for the first week started to ph it to around 6.5-6.7 the second week no nutrients added only what the plant has got from the soil.
Click to expand...
Powdery mildew. Some people will say your humidity is too high. I say your temps are probably too low. Either take a trip to the grow shop, or old hippie trick, 6 parts water, 1 part whole milk. Spray daily and raise your nightime temps into the 70's.
Good luck,
RR1
 
Quote Reply

Vic413

Posts
29
Reactions
7
Joined
Nov 11, 2020
Points
3
Nov 11, 2020
#3
RR1 said:
Powdery mildew. Some people will say your humidity is too high. I say your temps are probably too low. Either take a trip to the grow shop, or old hippie trick, 6 parts water, 1 part whole milk. Spray daily and raise your nightime temps into the 70's.
Good luck,
RR1
Click to expand...
maybe it’s from my tent being to hot as I’ve seen people say 70-75 is best temp but mine gets as hot as 82 my humidity is also all over the place. Thanks for the tip I’m heading over to my local shop as we speak! I also moved my grow light a little higher in hopes the hot air it produces gets sucked up by my carbon filter to lower temps.
 

Attachments

  • D70057C7-C003-4ACA-B69C-B83CB7CB9CFB.png
    321.5 KB · Views: 232
Quote Reply

Beachwalker

Posts
7,055
Reactions
14,445
Joined
Apr 10, 2019
Points
313
Nov 11, 2020
#4
Can you get a picture in natural light
 
Quote Reply

Backyard_Boogie

Posts
1,234
Reactions
2,608
Joined
Nov 10, 2020
Points
263
Nov 11, 2020
#5
Beachwalker said:
Can you get a picture in natural light
Click to expand...
Yes please take more pictures under natural light so we can see better. It could be powder mildew but the only thing that throws me off is the uniformity of the white dots. It appears like they are only forming on the exact same spot of each leaf line. Almost like it is a pattern. I have never seen powder mildew grow like that usually it just randomly blotches all over the leaves. It is possible that it could be from high nitrate because I have seen white spots on my leaves when I juiced up the nitrates too high. Usually high nitrogen white spots will be accompanied by dark green leaves and also curling (clawing) at the very end of the leaf tips. Foxfarms is a very nitrogen rich high grade soil so it is possible for smaller plants to show a bit of curling in the beginning before they start to mature. Some strains are more sensitive to the high nitrogen soils when they are little. Every time I have seen the Nitrogen white spots it has been when the plants were still immature and also every time the problem went away as the plant got bigger. Based off of the few pictures given this is my only guess. Anyone else have an idea?
 
Reactions: QuindariousGooch
Quote Reply

bellumromanum

Posts
768
Reactions
1,897
Joined
May 26, 2020
Points
143
Nov 11, 2020
#6
Are you using an ionizing/cool mist humidifier with tap water? Some times they evaporate and leave mineral residue. that might explain the symmetrical nature of the placement. Maybe get a jewler's loupe or microsope?
 
Reactions: Triggerman
Quote Reply

GNick55

Staff
Supporter
Posts
15,484
Reactions
49,619
Joined
Jan 11, 2020
Points
438
Nov 11, 2020
#7
not white powdery mildew..
just leave her be and watch her daily.
wet/dry cycle..
clear light pictures would help immensely..
 
Reactions: QuindariousGooch
Quote Reply

Vic413

Posts
29
Reactions
7
Joined
Nov 11, 2020
Points
3
Nov 11, 2020
#8
Beachwalker said:
Can you get a picture in natural light
Click to expand...
Backyard_Boogie said:
Yes please take more pictures under natural light so we can see better. It could be powder mildew but the only thing that throws me off is the uniformity of the white dots. It appears like they are only forming on the exact same spot of each leaf line. Almost like it is a pattern. I have never seen powder mildew grow like that usually it just randomly blotches all over the leaves. It is possible that it could be from high nitrate because I have seen white spots on my leaves when I juiced up the nitrates too high. Usually high nitrogen white spots will be accompanied by dark green leaves and also curling (clawing) at the very end of the leaf tips. Foxfarms is a very nitrogen rich high grade soil so it is possible for smaller plants to show a bit of curling in the beginning before they start to mature. Some strains are more sensitive to the high nitrogen soils when they are little. Every time I have seen the Nitrogen white spots it has been when the plants were still immature and also every time the problem went away as the plant got bigger. Based off of the few pictures given this is my only guess. Anyone else have an idea?
Click to expand...
GNick55 said:
not white powdery mildew..
just leave her be and watch her daily.
wet/dry cycle..
clear light pictures would help immensely..
Click to expand...
Here are some pictures taken with flash not the best pictures my bad
 

Attachments

  • A53B41F0-A0BD-4B20-9371-D09F02221D84.jpeg
    460.7 KB · Views: 179
  • 25A8389F-EB9B-47A3-9048-D66D43B00D4D.jpeg
    552.5 KB · Views: 171
  • B3BFA65A-4756-44E0-A9DF-418F67BCF27F.jpeg
    545.2 KB · Views: 177
  • D0D36CDB-C067-4771-9D0E-2C5B13800F6F.jpeg
    541.7 KB · Views: 167
Quote Reply

Vic413

Posts
29
Reactions
7
Joined
Nov 11, 2020
Points
3
Nov 11, 2020
#9
Backyard_Boogie said:
Yes please take more pictures under natural light so we can see better. It could be powder mildew but the only thing that throws me off is the uniformity of the white dots. It appears like they are only forming on the exact same spot of each leaf line. Almost like it is a pattern. I have never seen powder mildew grow like that usually it just randomly blotches all over the leaves. It is possible that it could be from high nitrate because I have seen white spots on my leaves when I juiced up the nitrates too high. Usually high nitrogen white spots will be accompanied by dark green leaves and also curling (clawing) at the very end of the leaf tips. Foxfarms is a very nitrogen rich high grade soil so it is possible for smaller plants to show a bit of curling in the beginning before they start to mature. Some strains are more sensitive to the high nitrogen soils when they are little. Every time I have seen the Nitrogen white spots it has been when the plants were still immature and also every time the problem went away as the plant got bigger. Based off of the few pictures given this is my only guess. Anyone else have an idea?
Click to expand...
This makes the most sense as I’ve done research on the soil and people said it’s to “hot “ for seedlings I still don’t know what that really means but I assume it means very nutrient dense and one of the smaller plants leaves have been curling! so high nitrogen is definitely the case here. So I should just keep doing everything the same and hope the plants will outgrow the issue?
 
Reactions: GNick55
Quote Reply

Backyard_Boogie

Posts
1,234
Reactions
2,608
Joined
Nov 10, 2020
Points
263
Nov 11, 2020
#10
actually doesn't look too bad in those pictures. I think you will be fine just let it go and keep watching. Im willing to bet it will go away on its own.
 
Reactions: Vic413 and GNick55
Quote Reply

Vic413

Posts
29
Reactions
7
Joined
Nov 11, 2020
Points
3
Nov 11, 2020
#11
Backyard_Boogie said:
actually doesn't look too bad in those pictures. I think you will be fine just let it go and keep watching. Im willing to bet it will go away on its own.
Click to expand...
Awesome! Thank you all for the help. While I’m here might as well ask of you guys use powder or liquid nutrients if any I want to stick to a more organic grow and have been looking at powder ones but have no idea which type of nutrients I need.
 
Quote Reply

Backyard_Boogie

Posts
1,234
Reactions
2,608
Joined
Nov 10, 2020
Points
263
Nov 11, 2020
#12
Vic413 said:
Awesome! Thank you all for the help. While I’m here might as well ask of you guys use powder or liquid nutrients if any I want to stick to a more organic grow and have been looking at powder ones but have no idea which type of nutrients I need.
Click to expand...
I think all organic liquid fertilizers are the best but they are soooo expensive. If your only doing a few plants its cool but if you are doing a bunch of plants it ends up being hundreds of dollars. I have used powder nutrients in the past with good results. Honestly if used correctly you can get absolute fire from both. Recently I stopped using fertilizer additives all together I am going the 100% natural route. I make my own organic compost in my back yard and I use it as a dressing to put as a top layer. Then when I water the natural bacteria and sugars seep down into the pot and it gives the soil a booster of nutrients. By only using natural composts it also allows me to recycle my soil after each grow. Powder nutients are mainly salt based so once used in adds unwanted mineral buil up which makes the used soil unsalvageable. After each grow I break up the root balls and put them in trash cans then I add live worms. I can only do this during the cooler months. The worms help recycle and break everything and then by next season I freshen it up with more compost and the cycle continues. I add CaMag as needed. So far it is working good but I am always learning everyday. Its all about LIVING SOIL!!!!! In nature the soil is alive with fungi and bacteria which help maximize root health.
 
Quote Reply

wordbird

Posts
3
Joined
May 8, 2021
Points
1
May 8, 2021
#13
Backyard_Boogie said:
I think all organic liquid fertilizers are the best but they are soooo expensive. If your only doing a few plants its cool but if you are doing a bunch of plants it ends up being hundreds of dollars. I have used powder nutrients in the past with good results. Honestly if used correctly you can get absolute fire from both. Recently I stopped using fertilizer additives all together I am going the 100% natural route. I make my own organic compost in my back yard and I use it as a dressing to put as a top layer. Then when I water the natural bacteria and sugars seep down into the pot and it gives the soil a booster of nutrients. By only using natural composts it also allows me to recycle my soil after each grow. Powder nutients are mainly salt based so once used in adds unwanted mineral buil up which makes the used soil unsalvageable. After each grow I break up the root balls and put them in trash cans then I add live worms. I can only do this during the cooler months. The worms help recycle and break everything and then by next season I freshen it up with more compost and the cycle continues. I add CaMag as needed. So far it is working good but I am always learning everyday. Its all about LIVING SOIL!!!!! In nature the soil is alive with fungi and bacteria which help maximize root health.
Click to expand...
Very cool. Do you remove the worms before dressing your ladies?
 
Quote Reply

MICHGANDER9

Posts
307
Reactions
335
Joined
Mar 12, 2021
Points
63
May 8, 2021
#14
wordbird said:
Very cool. Do you remove the worms before dressing your ladies?
Click to expand...
Don't mean to interrupt your thread I have bunches of worms in my 4x8 Grass Roots bed and I use nothing but organics (kisorganics.com) they got a GREAT all around amendment mix mixed with some good quality compost or worm castings and I'm going on over a year with 4 harvests in the same soil Great flavor ,Pretty good yeilds! Happy Growing
 

Attachments

  • 16205106646538831530041257835828.jpg
    799.2 KB · Views: 119
Quote Reply
Page 1 of 1 · Replies 1–14 of 14
1

Thread info

Replies 13
Views 3,786
Started Nov 11, 2020
Latest post May 8, 2021
Starter Vic413
Forum General Indoor Growing

Latest posts

  • 2026 Outdoor Grows! let's see em!
    • Latest: FarmerScotty
    • 8 minutes ago
    General Outdoor Growing
  • F
    First Auto grow gg4
    • Latest: fullyauto
    • 54 minutes ago
    Introduce Yourself
  • Blazing heat, smoke-filled skies, illegal! What could possibly go wrong?
    • Latest: Lockebox
    • Today at 4:52 AM
    General Outdoor Growing
  • S
    I have a question about vape pens
    • Latest: santosmaica
    • Today at 1:55 AM
    Concentrates & Processing
  • I’m Week 4 into Flowering
    • Latest: April14th2014
    • Today at 1:40 AM
    General Indoor Growing
  • Home
  • Forums
  • Medical Cannabis Cultivation
  • General Indoor Growing
  • White chalk like marks on leaves
  • Contact us
  • Terms and rules
  • Privacy policy
  • Help
  • Home
Community platform by XenForo® © 2010-2026 XenForo Ltd.
Menu
Log in

Sign up

  • Home
  • News
  • Classifieds
  • Forums
    • What's new Featured content New posts New Articles New articles New products Latest activity
  • Social
  • Strains
  • Live
  • Learn
  • Brands
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?