Back to Grow Questions

Potassium deficiency?

Misanthropestarted grow question 4y ago

Shes got about 2.5 weeks left, at first I thought the leaf discolouration was natural as harvest approaches but the necrosis has me worried. My guess is K deficiency. I was about to start flushing, will she make it to the finish line ok or should I attempt to fix this issue?

Misanthrope

Solved

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

likes

CRiSPrGrowanswered grow question 4y ago

hey there misanthrope, this is just your average nutrient burn you can tell by the burn on the tips. You have me worried about how you're talking about having 2.5 weeks left yet starting to flush soon. In hydro you wont need more than a day of plain water for a flush - that's kind of the point of hydro actually. Anyways, not a deficiency, try to reduce the nutrients by 0.5 or a bit less mL/L then work your way back up week on week . Hope this helps ! 🚀

1 like

Complain

Selected By The Grower

Hashyanswered grow question 4y ago

I agree with dissnoof on this. Back your nutrients to an Ec of 1.4 max. When it comes flush I usually in hydro run a flush solution for 24hrs like flawless finish or Ghe clean then run water for 24hr then chop.

likes

Complain

Similar Grow Questions

Solved

Did I do the right thing? Pls check my update on this week!Can my Growmies check my update on this week please? Ppm shot up and I noticed nute burn. Weird bc I have only added water since last week. I cleaned the pump, removed air stone and lowered ppm. Definitely seems like too much nutes - hoping they’ll perk up.

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

4y ago

2

2

Solved

Yellowing dry leaves, late flower.About 2 weeks from harvest time, the yellowing leaves which I put down to an early fade have become dry, brittle, curly and splotchy. Should I worry this late? Is it potassium defeciency, lockout? Should I begin flush? Add molasses?

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

6y ago

4

1

Solved

Yellow/burned tips & curled leaves I have an issue with some yellow/burned tips and curled leaves. I already suspect that mainly is from light stress but could also be a nutrient deficiency? I´ve raised the lights the max I can and keep it at 80% for 20 hours. Biobizz soil and nutrients. … Show more

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

1y ago

10

7

Solved

Yellow crunchy leaves Is this normal during the last weeks? I've been feeding just ph'ed water during 10 days after the PK 13/14 Any idea would be awesome, thanks in advance.

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

6y ago

3

3

Solved

What deficiency is this?Earlier, I added Epsom salts to fix purple stems, I’m pretty sure I over did it and I think this is a potassium deficiency but I’m not sure. I was being cheap and didn’t change res b4 moving over. Now that they moved tents, seems to be getting worse. How do I fix fast!? Pix in di

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

7y ago

1

3

Solved

Ancient_Genetics

They were slightly overwatered, the soil PH of 7.1 to 7.3, lacking phosphorus, maybe magnesium to. Branches from the sides are stretching, but I noticed thet lower leaves started to turn yellow a little at both. If anyone knows good advice to help them out, I would be grateful.😅

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

4y ago

3

4

Solved

Burntjalepeno420

Deficiency?So I noticed this yesterday and I'm struggling to figure it out. The symptoms only appear on a few leaves of only 1 branch. Nothing about the environment or feeding has changed. A recent flush of plain pH'd water showed slightly acidic soil but not too crazy. Bottom feeding with

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

3mo ago

2

Solved

Growing in FFOF with some HF but have nutrient issues...have only given CalMag with RO water and this is what I've got.Wedding Cake nute burn or possible P deficient with yellowing slightly down the edge? Also may have N toxicity with curling leaves? Blueberry also has slightly burnt tips, both plants have yellowing in the oldest growth. All in diary pictures. Thoughts? And how do I fix it?

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

5y ago

2

2

Solved

Ancient_Genetics

What deficiency this is ?Perhaps in these pictures you can see better, what deficiency this is, whether it is phosphorus, potassium, magnesium or zinc?.

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

4y ago

1

Solved

Potassium deficiency?Shes got about 2.5 weeks left, at first I thought the leaf discolouration was natural as harvest approaches but the necrosis has me worried. My guess is K deficiency. I was about to start flushing, will she make it to the finish line ok or should I attempt to fix this issue?

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

4y ago

1

2

Solved

What’s most likely causing this?What does this look like? Soil ph seems good and I’ve been giving them light feedings of nutrients. Any possibility it’s a symptom from being root bound? It’s just a few leaves on the bottom of the plants.

Leaves. Edges burnt

Leaves. Curl down

Leaves. Color · Yellow

1mo ago

2

2