The Grow Awards 2025 🏆

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

Some of my leaves on the pre-flowering plant are d...

BonusPackagestarted grow question 5 years ago

Some of my leaves on the pre-flowering plant are discoloured and yellow on the edges. Please advise

Solved

Leaves. Edges burnt

likes

Grey_Wolfanswered grow question 5 years ago

@BonusPackage Magnesium deficiency You may need to raise the ph up a bit between 6.2-6.5 would be ideal This will allow all of the nutrients to be absorbed better

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

Début de floraison → Pointes des feuilles jaunissent et finnisent brulées Bonjour :) Après 2 cultures (6 plants) j'ai toujours le même problème : les pointes jaunissent tout le temps (à partir du début de la floraison) et les feuilles finissent brulées Substrat : Biobizz All mix 1er culture : pas d'apport 2eme culture : Engrais liquide Biobloom

Leaves. Edges burnt

18 days ago

4

Solved

Cal mag or nutrient Burn I have 3 Automatics. I made the mistake of planting the into BioBizz Allmix, which is pretty strong for Autos. Strawberry Gorilla and Aplle Strudel seem to be fine. My Orange sherbet not so much. Is this Cal/ Mag defficiency or nutrient burn?

Leaves. Edges burnt

Leaves. Curl down

a month ago

5

5

Solved

New grower with questions about burnt tips, browning/scrunching leaves and some pale/yellow spots!I noticed Quick One had issues with burnt tips and discoloration by the end of week 1 and 2, what could've been the issue? Apple Fritter is looking sick, brown spots, what is that? Easy Bud and Quick on have slight yellow/paled spots on their leaves, only 1-2, is that normal?

Leaves. Edges burnt

Leaves. Color - Pale

Leaves. Color - Dark-brown

a month ago

3

3

Solved

Nutrient burn , this bad?Started off in hot soil. My first organic run. 5th week bloom. 75degrees 35rh. 300w led 21" from canopy.Soil pH 6-7 Using Gaia Greens top dressing for feed . All Purpose and Bloom. Added Gaia all purpose to the soil, then extra non needed amendments.Not needed .Top fed monthy

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Dropping off

2 months ago

4

3

Solved

Cant figure this out Any input on this issue?!?! Can't figure out problem i keep facing. Starts in flower around week two. Auto in soil only fed once and added fox cal mag a few times.

Leaves. Edges burnt

Leaves. Color - Yellow

Leaves. Color - Mottling

2 months ago

12

11

Solved

Brown spots on my little seedlings Hi, anybody can confirm my thought process? Ph of runoff is 6,5 all the time I know I did more nutriens 4 days ago and overwater, I lower light power as well right now on 375PPFD ,they geting only water now Can you confirm that this was due to too much nutriens and overwaterinng?

Leaves. Edges burnt

2 months ago

1

1

Solved

Yellow leaf edges I have a couple plants that are about 5 weeks old, and one has started getting yellow edges around the leaves. I feed them with worm tea, kelp, and calmag every other week, but it's a light dose so I think this is a deficiency and not a toxicity.

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Color - Yellow

2 months ago

1

1

Solved

Leaf burns I have the following problem with my ladies, they are in Vegi 2 and now the lower leaves are getting burnt tips. I use Biocanna Bio Terra Plus soil and Biocanna Bio fertilizer according to the FastBuds autoflower schedule. What could be the problem ?

Leaves. Edges burnt

Leaves. Tips - Burnt

3 months ago

2

6

Solved

Strange Twisting Leaves I have a plant that's just over 3 weeks old, and since the first week or so, I noticed it has some leaves that grow with a "kink" or "twist." They all seem to have a small discolored spot on the edge of the leaf that eventually becomes the corner of the kink/twist

Leaves. Edges burnt

Leaves. Twisted

Leaves. Other

3 months ago

7

Solved

Was ist los ? Magnesium mangel oder Stickstoff..Hilfe Hey Leute, Ich weiß nicht was los ist. Meine Damen sind irgendwie traurig. Vor 14 Tagen wurden sie umgetopft und haben jetzt 2 Mal Dünger erhalten. Davor 10 Tage lang ph eingestelltes Wasser. Dünger ist Canna Terra und gegeben wird 3 ml auf einen Liter Wasser plus CalMag.

Leaves. Edges burnt

Leaves. Tips - Burnt

3 months ago

1

2

Solved

Big deal? Feeding 2L every 2nd day with tab water and around 10ml total bloom fertilizer

Leaves. Edges burnt

3 months ago

4

4

Solved

A deficiency, a toxicity and a toxic-deficiency???Here's what I make of it (and PLEASE correct me where I am wrong!) : The tips yellowing indicates, a nitrogen burn. The burnt brown tip indicates, nitrogen burned to long 😂 The black spots indicate, a P or K issue (as the leaves are otherwise healthy green in color)

Leaves. Edges burnt

Leaves. Tips - Burnt

Setup. Strains - Photoperiod

3 months ago

4

4

Solved

Hi growmies i would apreciate it ur opinion Good day guys i have a question about my plants, my question is why my stem turn allmost black but plant doesent show any problem with it , is it genetics or my fault something ? And how they look (ur opinion) i want soon to cut them and to put new ones in bigger pots.

Leaves. Edges burnt

Leaves. Color - Yellow

Leaves. Color - Red or pink

3 months ago

2

3

Solved

Brown/burnt spots on 1 plant only Hello, D49 (out of 70 theoritically) same strain, same nutes but only one plant looks affected (top right). Looks like it started 2 or 3 days ago. Could it be nute burns ou some kind of lockout? If yes should I flush or could i only give tap water for a few waterings?

Leaves. Edges burnt

Leaves. Tips - Burnt

3 months ago

5

4

Solved

Yellow & brown spots in 2nd and 3rd week in coco-perlite nursery cup. What am I doing wrong? Fed until 20% runoff (extra), strained. Smth with roots?2nd grow in 70/30 coco-perlite mix* & very similar issues w. yellow/brown spots in weeks 2-3, then stabilizes. *CalMag & pH buffered 6h @ 0.5mS, pH5.8, strained** & seed planted. Feed: W1: **Strained sol. + water 70/30, pH5.8 W2: AN M+G+B 1-1-1 + Simplex CalMag Plus 0.4mS Help

Leaves. Edges burnt

Leaves. Color - Dark-brown

Leaves. Color - Black or grey

4 months ago

9

6

Solved

Week 8 - Godzilla Cookies Auto - Feels like they are substantially behind. Thoughts on pest management or feeding schedule tweaks?Day 54 - Godzilla Cookies Auto. Dealing with whiteflies, soil gnats & a caterpillar (now removed). Currently using neem oil spray & adjusted watering. Plants are full sun/30% shade daily. Avr Temp 20°, Avr Hum 56% How do these look? Are we good, or 'newbie' grow OCD?

Leaves. Edges burnt

Leaves. Tips - Burnt

Plant. Spaces between nodes

4 months ago

6

6

Solved

Discolored edges Hey Guys, Fourth grow and first time this is happening to me. Some leaves are discolored and it looks like it starts from the edges. What could be the cause for such problem?

Leaves. Edges burnt

Other. General questions

4 months ago

6

4

Solved

Is this light stress and/or nutri deficiency?Showed up just a couple days ago and progressed quite fast for my liking lol I just wanna be sure, as harvest is approaching and i can tank some light damage. Also, i turned down the lights just in case too

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Color - Red or pink

4 months ago

8

6

Solved

Help please!What is happening with her?

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Color - Yellow

5 months ago

2

2

Solved

ClassicKellerWiese

Überdüngung oder Mangel ?Bei all meinen Pflanzen bilden sich gelbe Blattspitzen aus die auch etwas verbrannt aussehen. Denke nicht das an der Lampe liegt, die ist 70cm entfernt und läuft auf 50%. Wachsen auf Kokus und Lightmix Erde von Biobizz. Gedüngt wird mit Biobizz nach Düngechema.

Leaves. Edges burnt

5 months ago

2

2