By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy
Accept
Likely potassium deficiency on one of my phenos? Can someone please confirm?
biologischNLstarted grow question 3 years ago
Looking at my plant pictures on 2nd of feb, #1 (plant on right) seems to have some sort of deficiency. Looks like potassium. For the record I dont use liquid nutes. Only dry organic amendments and I have not watered or top dressed in roughly 2 weeks.
Thank you in advance!
like
m0useanswered grow question 3 years ago
I would agree with potassium.
If you're using organics try and find a kelp extract or seaweed supplement, They tend to be high in K and are readily available.
Green sand is also an option for long term release but it takes its time.
Wood ash is also an option at aorund 0-1-3 but it will make the soil alkaline.
Best Of Luck!
Grey_Wolfanswered grow question 3 years ago
@biologischNL can you access sulfate of Potash ??
it would really benefit your grow mate 👌
like
Complain
Similar Grow Questions
Solved
BudmanFlyingjoint
Strange discolorationThe plant is becoming less green, more yellow, dark green/blue, and the tip seems necrotic. She received a little more light intensity (TS1000 at 50cm, 25%dim to 50%dim) when she was repotted on the final DWC. T.A. (Growing on FeedChart) was used to create the nutrient solution.
Leaves. Veins - yellow between
Leaves. Color - Dark-purple
Feeding. Deficiences
9 months ago
1
3
Solved
Deelicious
Slight Leaf Discoloration. Early zinc deficiency?Girl showing slight discoloration on newer leaves. Mostly interveinal + little on the tips. Guessing it's an early zinc def. but would like another opinion. Watering sparingly at ph 6.3 - 6.5. No runoff yet, so ph may be higher in soil. Lower ph and watering til runoff next time?
Week 2
Leaves. Veins - yellow between
10 months ago
4
2
Solved
legal_grower
YELLOW LEAF TIPS
Leaves. Veins - yellow between
Leaves. Color - Yellow
10 months ago
1
1
Solved
joxsc
Please help identify my Problem: Yellowing leaves with veins showing and some necrosis spots in third week of flowerThe odd thing is that only some leaves in the middle of the plant are affected. My thoughts were Nitrogen or Manganese deficiency or maybe light burn (why in the mid of the plant tho?)? I feed Biobizz Bloom, Grow and TopMax, no Problems until now.
Leaves. Veins - yellow between
Leaves. Color - Yellow
6 months ago
2
2
Solved
SlamFM
Is this an Iron deficiency? The tops and new growth look too yellow and the veins are yellowing with a darker green in betweenHaven't fed much with nutes, when I did it's been low doses. I'm trying not to burn one for once. Not sure if its a deficiency or other problem or if I'm just worrying too much, looks off to me though. My problem with overwatering might be contributing.
Leaves. Veins - yellow between
6 months ago
1
1
Solved
oiiix
Is it time to feed nutrients now or can I wait?I have not given any nutrients yet but I'm wondering if I should.
1. Are these really signs of nutrient deficiencies?
2. Which nutrients are missing?
2.1. My guess is P, N and/or Mag, Cal. Is that a good guess?
3. Is BioGrow a good choice to address these deficiencies now?
6 months ago
7
5
Solved
Kratistos
Upper leaves are yellow and not smoothI noticed leaves on top are closing and today are yellowish. Older plant aren’t stretching more, I thought it’s too much light or too hot but it’s kinda weird because light are at 40cm from longer plant and 50 from smaller, temperature are max 26C. So, it’s normal?
7 months ago
3
Solved
Leafy420
Was it to much?My plant looked okayish then i transplanted and topped the same day and this happend
( i think I was feeding too much calmag )
Changed the res now running at a ppm of 750 ph 5.8ish RO water on autopots
( oh and my cat ate the tips from 3 leafs X( ...)
Last pic is today
Leaves. Edges burnt
Leaves. Veins - yellow between
7 months ago
3
4
Solved
Moondogz
Suspected Nitrogen DeficiencyNoticed yellowing leaves at the start of Week 3. Suspect nitrogen deficiency. Using Cal-Mag, Alga Grow(NPK 4-2-4), and Power Roots(NPK 0-0-2) at half the recommended dosage. PH is measured at - 6.5.
Leaves. Veins - yellow between
Leaves. Color - Yellow
Feeding. Deficiences
7 months ago
2
2
Solved
question_a_pig
Does that look like an early deficiency?Hi everyone, what ya thinkin'
What kind of deficiency could that be?
My bet - potassium.
last portion of water was ~6.2 pH
I wasn't feeding her nutes for ten days by now.
Because previous runoff was ~2000 ppm. I thought would be a good idea to do just water for a while.
Leaves. Veins - yellow between
4 months ago
3
4
Solved
Merulix
Giving CalMag but getting magnesium-deficiency?Hi Guys,
this looks like a magnesium-deficiency to me.
Its only one plant of three looking that bad.
almost all leaves look like this one in the picture.
The thing is i am giving full dosage Calmag
with distilled water with my other nutrients
at PH 6.2 - 6.7. Soil PH is 6.5ish
Week 5
Leaves. Veins - yellow between
16 days ago
3
3
Solved
cabelo
Blue Dream Autos with Downturned Leaf Tips23 days old. One started showing downturned leaf tips on new growth; others followed. Looks off-color, at least one is in early bloom. They’re in coco, 3-gal pots, 480W QB at 50cm, 2.2 EC daily, no pH check. Problems started after adjusting watering for larger plants. Any tips?
Leaves. Curl down
Leaves. Veins - yellow between
Setup. Strain - Autoflowering
2 months ago
4
4
Solved
MrSnoid
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
a month ago
6
3
Solved
Eagers
Magnesium deficiency?Can somebody help me identify this issue please? Is it a magnesium deficiency? I believe I had a mag def a week back and since have fed 0.8EC of calmag before i add nutrients. Growth is healthy but yellowing slowly creeps in to newer leaves and curl. Runoff ec/ph seem fine.
Leaves. Veins - yellow between
4 years ago
2
2
Solved
Siriuz
This is what I saw today, about one leaf the one after the Cotyledons, both of them are starting to turn yellow in betweento so I didn't know if she was alright or if it Was a bug since she has all those black dots on her plus the other leaf next to her has apparently a good bite
Leaves. Veins - yellow between
Leaves. Color - Yellow
Other. Bugs
4 years ago
1
3