Chat

By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms

Accept

Recommended

Back to Grow Questions

Nitrogen lockout?

Scratchiestarted grow question 3y ago

I've yellowing bottom leaves and yellow top all over, is it nitrogen deficiency and nute burn?

Scratchie

Scratchie

Solved

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Yellow

likes

Organomananswered grow question 3y ago

Yes, there is some burning from too much nitrogen, but the yellowing is an indication she is hungry for phosphorous and potassium now that she is flowering. Cut back on the nitrogen and give her a dose or three of a P/K booster and this will help her continue. The damaged leaves will not recover, but it will help keep her other leaves healthier. Hope this helps, Organoman.

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

Light green tops I've got one plant with extra light green tops. Any suggestions or is this normal sometimes? See my diary for feeding details. I've treated all plants exactly the same the only difference would be the type of pot (airpot) and I didn't root prune like I did the others.

Leaves. Color - Yellow

2mo ago

6

4

Solved

Granddaddy_Terp

What's causing my brown crispy leaves!?Over the past week my plants have taken a turn for the worse. Many leaves went from yellowing to browning to completely crispy! Other leaves have brown spots on them and some of the stems are purple.

Leaves. Curl up

Leaves. Color - Yellow

Leaves. Color - Dark-brown

4y ago

2

8

Solved

Leaves Curling problem Why are my leaves curling in my first week of flowering?

Leaves. Curl up

Leaves. Curl down

5y ago

3

2

Solved

Crispy bottom leaves (tip)Need help!! Tip of bottom leaves are kinda drying out (crispy dry) and are a little bit curled down. Not sure if it’s improper ph, too much nutes or overwatering. Top leaves are fine, I dunno where I was lacking. Help a brother out, what do you guys think?

Leaves. Tips - Burnt

Leaves. Curl down

3y ago

3

Solved

FourTwenty_Plants

Yellow leave tips?Sooo I found that some of the leave tips are getting kinda yellowish dark and im not too sure if its the light thats not high enough or why this is happening. Humidity is about 55% and temp at 23 Celsius Thats not only happening on 1 or 2 leaves almost every leave has that

Leaves. Color - Yellow

1y ago

3

2

Solved

Dear experts, could you help me ascertain whether the 4th and 5th picture on my Week4 diary is really heat stress? The only reason I think that is because of that slight cupping/curling of the leaf edges. Might there be other problems that could cause this?

Leaves. Curl up

6y ago

1

1

Solved

drooping leaves, cold weather and high humidity, is it overwater problem?I think i´ve overwatered my plants, so it´s is cold (16 C / 60 F) and relative humidity around 70%-75% . old leaves are turning yellow. I´ve lowered the water frequency and wait the soil to dry before water again but leaves are still droopy. What do you think? is it overwater?

Leaves. Dropping off

Leaves. Color - Yellow

2y ago

8

5

Solved

Curling leaves with purple tinge Had to leave plants for four days. Watered with 1L of water before I left. Arrived to 31c temps and leaves curling with a purple tinge to older leaves. Assuming heat stress mixed with overwatering. Thoughts?

Leaves. Curl up

Leaves. Color - Dark-purple

3y ago

1

Solved

Possible deficiency/humidity/pH problem I've been struggling with same problem from beginning of grow - leaves having these dry yellow/white spots. The first week I used too high pH which later I replaced by rainwater - new leaves were healthy, but last night I left tent at 70% RH. Somehow it returned - still rainwater

Leaves. Tips - Burnt

Leaves. Color - Yellow

Leaves. Color - Pale

5y ago

1

2

Solved

Vergeling bladeren en opdrogen Bladeren worden Geel en drogen op, en toppen ontwikkelen ook niet zo snel tov de andere 2 planten die het goed doen.Ze beginnen woensdag aan hun 10eweek en 6eweek bloei. Te veel water of te weinig voeding, ik weet het niet meer.. Iemand hier ervaring mee? Aub

Leaves. Color - Yellow

5y ago

1

1

Solved

Please help. Is it normal?Please help. My autoflowering flowers are they ok??? Ppm850 , ph 6.0-6.8 , i use foxfarm oceanforest soil start feeding them when first signs of flowering but only 1/3of what label say. I have 2x600w in 4x4 tent in 20hours circle light , day temp 25c night 21c

Leaves. Tips - Burnt

Leaves. Curl down

Plant. Too short

5y ago

5

4

Solved

Cookies_connoisseur

yellowing Looking at my latest tent shot showing the yellowing etc after forgetting to water in a mini heatwave, is there anything anyone recommends to aid guiding them through to finish

Leaves. Color - Yellow

Plant. Wilting

Plant. Stem - Red or purple

5y ago

1

1

Solved

Could the seedling be burned?Could the seedling be burned at 53cm high from the light on the third day of life? I want to remind you that it is a MarsHydro TS-1000

Leaves. Tips - Burnt

Other. Other

Setup. Lighting

5y ago

5

3

Solved

The plants now finish the 10th week start the 11th week Looks like need food? Can I put nutrients now ?

Leaves. Color - Yellow

Leaves. Color - Red or pink

Feeding. Schedule

5y ago

2

2

Solved

Leaves burnt Whats wrong with these leaves? I rotated the plant because these leaves were under the strongest part of the light. I also raised the light. Thanks for the help!

Leaves. Curl up

5y ago

1

Solved

Yellow spots on leaves 🙏Greetings... I just transplanted this "Stoopid Fruits" from a Solo to a 2 gal cloth pot after the leaves started to droop and the roots were partially root bound. Starting to perk up but I have some yellow spots, should I clip this leaf off?

Leaves. Color - Yellow

4y ago

1

2

Solved

Curled leaves Why my plant's leaves curl up like that? I think that there's an overwatering issue, but is there any way that my soil is not good?

Leaves. Curl up

3y ago

4

2

Solved

Nitrogen deficiency?Nitrogen def? Ph?

Leaves. Color - Yellow

5y ago

2

Solved

Hi fellow growmies, Could you identify my problem out here please? Is it a heat stress or stg. else?

Leaves. Color - Yellow

4y ago

4

4

Solved

Day 38 autos: is this nitrogen deficiency or something cal mag could help with?Kia ora whanau, Each of my three flowering autos (the Herbies Beginner Auto Mix #1: Ape Fruit Auto, Purple Chill Auto and Godzilla Cookies Auto) has an issue with yellowing older leaves. Do I need more nitrogen or is this potentially something cal mag would address? TYVMIA!

Leaves. Color - Yellow

3y ago

4

3