The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Help!! Anybody know what this weird substance on my plant is??
Colombian_gold
started grow question 4y ago
Don’t know what this white substance is. Looks like crystals, could it be dried nutrients or is it powdery mildew??? Never seen it before so a little worried. Thanks in advance for any help on this!
Solved
Leaves. Other
Other. Other
Roots. Other
likes
Chow_13
answered grow question 4y ago
Nothing to worry about. Not PM. Could be dried nuturents. My first thought was salt. Brush it off and continue on. Happy Growing and good luck.
1 like
Complain
Selected By The Grower
Colombian_gold
answered grow question 4y ago
@chow_13
thanks brother!
likes
Complain
GanjaReaper
answered grow question 4y ago
Maybe
@Growdiaries
know the awnser?
likes
Complain
Similar Grow Questions
Solved
northernMike
P.H problems
after i fed my plant,it's in soil 3gal. pot, the P.H is around 5.5, I bought P.H up and down(root farm). How do I get the P.H to where it's supposed to be? I've never messed around with the P.H before. The plant is an auto and is kind of yellowish and pale. thanks for the help👊
Other. Other
5y ago
3
3
Solved
ElDuro
2 of the very bottom leaves yellowed and fell, and 2 other started to show yellow parts, It seems to have stopped now. Wondering if it's due to the high heat and very dry air, or if it's nutrient related. Thanks!
Week 8
Leaves. Other
7y ago
2
6
Solved
woolygrower8280
any idea of the cause?
I'm starting to get these weird spots on some of my leaves and the tips are getting a bit brittle also I have the impression the leaves are kind of droopy any idea of the cause
Leaves. Other
5y ago
1
2
Solved
Beginnerbuds2020
What’s goin on
I’ve notice that one my other plant that one side side the leave has only two then 3 fingers but on the other side it has 3 finger what’s going on
Leaves. Other
6y ago
3
Solved
Bikoo
4 leafs who need to leaf, but may they leaf? to leaf or not to leaf
Hallo friends. I have a q. About 4 leafs how are blocking the light of branches under those four leafs. Please see pic: 4 leafs. Can i cut them off? or will this damage the yield or in any way? Please see pic: 2,3,4 to see were those leafs come from. Thanks you! Cheers!
Leaves. Too many
Leaves. Other
Other. Other
5y ago
2
2
Solved
jamaljackson
I have a cool mist humidifier in my tent, using RO water. Two of my plants that are close to the humidifier have started to get leaves with rust colored spots and yellowing. The left two are fine. Any ideas? The only difference is the mist may have been spraying on the first two.
Week 3
Leaves. Other
7y ago
1
Solved
Elendil
Whats wrong ?
Is this Calcium defficiency ?
Week 4
Leaves. Other
5y ago
2
2
Solved
CaptStinkNug
When (if needed) to stop feeding and flush on organic grow?
Being my first completely organic grow in super soil, I'm curious about when to or a need to flush. I've found some saying that flushing isn't really needed if grown organicly or only days needed. Is this correct? On week 6, trichomes are still mostly clear.
Week 6
Other. Other
3y ago
2
2
Solved
timber03
Too little calcium in early flower?
I’m in the early weeks of flower and am seeing this happening. I thought it was due to an attempt at foliar feeding, but those initial problem leaves have been trimmed. Is this a calcium deficiency, and if so, how can I address it? (NLS top dress/coconut powder/recharge)
Week 5
Leaves. Other
Feeding. Deficiences
4y ago
3
2
Solved
Komar85
Could u tell me something more about this ( cut 2 weeks before harvest now is on day 30 I not sure)
Other. Other
5y ago
2
3
Solved
buddhi_coop
Soil-Grow medium
You all think this will be good for when I transplant my ocean grown soiled veg plants into 3 gallon pots for flowering ?
Other. General questions
Plant. Other
Roots. Other
5y ago
1
1
Solved
Odin9
Lite deflation week5-6 autoflower??
Hi this is just 2 test plants bcn xxl auto i they where planted 17/6-01 have used them for prepping into I get all my gear and now I am ready. ✌️moved them into tent in Saturday.is it Okey to remove the biggest fan leaves that is blocking other bud sites???I ca 2 weeks in flower.
Leaves. Other
4y ago
1
2
Solved
Bootymissles
What's my problem here?
I have some weird leaf discoloration on a couple of flowers that are directly under the center of my light. What do I need to do? Also this is what my lowest (younger) leaves are doing at the bottom of the plant. Any tips? included a pic of a flower in the corner that looks fine.
Week 17
Leaves. Other
5y ago
2
3
Solved
Fusion
Multi lights
Does anyone run multiple (different) lights on same-day cycle. Experimenting with LED / HID /LED within a 12/12. Have 3 hrs LED , 15 sec delay for HID and runs for 6hrs, 15 sec delay to LED for last 3hrs. Ideally LED mimicking falls cool morning /evening, with HID giving aft
Other. Other
6y ago
4
6
Solved
BKILLERASAP666
420?
Can anyone explain what 420 means? Let's see who knows there cannabis history
Other. Other
4y ago
1
6
Solved
PREPPYPUNK
SMELL DISAPPEARED FROM NEW VEGGING AUTO'S.
3 weeks old, 7 inches tall autoflower had strong weed smell. Its gone as of this morning. What happened? Is this a problem? anybody have this happen and things worked out ok long term?
Week 2
Other. Other
4y ago
2
4
Solved
merchandise91
Flushing ?
Begin flush or keep feeding ?? Trichomes seem 50-75% cloudy I think .. this my first time I don’t want to stop feeding until necessary 🤷♂️
Other. Other
5y ago
2
4
Solved
CaptainCream
What is this and how to fix this issue ?
What is this and how to fix this issue ?🙏 What is this white on leaves and you can see leaves deformation they are not growning the same in two side.??
Week 10
Leaves. Other
6y ago
12
6
Solved
Dillsnills
Droopy???
Do my plants look droop? I watered 2 days ago. Maybe light not close enough I have it at 20 inches, I did LST maybe let them rest for a day or 2 jus asking if I should be worried and what to do?
Week 4
Leaves. Other
6y ago
2
1
Solved
EL_Papi
Ernten?
Sind die fertig? Kann ich schon abschneiden?
Week 15
Other. Other
6mo ago
4