Back to Grow Questions

Classic N toxicity (:

Medicannastarted grow question 6y ago

Heyho :) since she has progressing leaf tip burn and curled tips which I'd almost certainly say is a nitrogen toxicity, would you recommend going down to 50% general strength or maybe leave out the grow supplement at all and just feed Bloom? Cheers guys :)

Solved

Leaves. Tips - Burnt

Leaves. Curl up

1 like

Ttrichomeanswered grow question 6y ago

I personally do not see nitrogen toxicity. Actually I believe ur going to hard on the bloom. Overloading ur plant with too much potassium to early.

1 like

Complain

Selected By The Grower

Shagrathanswered grow question 6y ago

Hi there! I think that there is no nitrogen toxicity going on but something else. It does not look too bad yet 'cos most of the time if only tip of the leaves are "burned" it does not affect growth at all if you wont let it go any further than that. I think your flowering stretch is over and the plant is producing more buds now so it would be a good time to switch to bloom nutes now. Happy growing! 👌

likes

Complain

Similar Grow Questions

Solved

Heat shock from heat matrasse.Heat mat overheating 30C° and burning seedlings. Leaves look crispy now. Removed the mat from under and just layed onto the side of my propagator tent. Temp now 27C°. RH still 30%. Ordered humidifier but thats 3day til arrives. Poured water to their tray. What else should I do?

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Curl up

3y ago

2

Solved

TripleCcannabis

Burnt dried out leaves New tent setup cause issues. My temp soared humidity plummeted. Was sick and could correct + Used a dilute alcohol & soap solution as another plant had a s mite issue.. got high, forgot to wait till lights out. Trimmed of all damage. Anything else I can do to help her?

Leaves. Tips - Burnt

Leaves. Curl up

6y ago

3

Solved

Should I flush her?Well, yesterday it was getting bad, today it is incredibly bad. What should I do? Flush her or just leave her be?

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Twisted

6y ago

1

Solved

many problems with the leaves the leaves have been turning yellow and falling faster and faster, especially those below; the upper ones curl and become burnt with dots and turn yellow should I try to put the lamp higher? (I haven't given fertilizers for a week)

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Mottling

6y ago

2

Solved

What are my leaves telling me?Is this light burn? Nutrient deficiency/excess? It is only happening on the top leaves, the lower leaves are just fine. The light is rather close to the plant, but she is outgrowing my tent. Thanks in advance for the help! I really appreciate it. 😀

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Yellow

5y ago

2

1

Solved

BavarianBarbarian

Week 8 (4 weeks into flowering) - Possible Nitrogen / Cal-Mag issue?Plants show signs of what i assume to be a deficiency. Stopped feeding nitrogen Week 7 according to schedule. Symptoms are not on every leaf but some the upper foliage. Yellowing, burnt tips and rusty spots. My guess is lack of Cal-Mag & Nitrogen. Is my guess correct?

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Yellow

2y ago

3

3

Solved

Super Urgent, first time grower, batch might go to heaven - plants look beaten up, I suspect light stress or overwatering 5 plants, 4’x4’x6.5′ grow tent, 600 watt HPS lamp (it is hanging 70 cm above the highest canopy plant), did topping on 2 of them, swithing to fowering very soon, average humidity is 30%-50% (can't afford a humidifier now, so I use natural methods) for now), 2 static fans

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Curl down

7mo ago

2

2

Solved

Calcium Deficiency ?Got a little deficiency, can't find what it exactly is. Maybe a cause of this problem is that they got 3 days of nonstop light because I fucked up with the timer just before leaving house for 3 days

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Yellow

4y ago

4

3

Solved

Nute light burn Okay I think I learned a lesson, 1/4 nutes next time (or nothing at all) seeing I'm seriously nute burning my plants, also one of the girls is about 20 cm from my light... Anything I can do to maybe calm down the situation? Flush? Never tried to and wasn't planning on doing it...

Leaves. Tips - Burnt

Leaves. Curl up

5y ago

2

2

Solved

Wasting my time or keep going?Hey I'm definitely new to growing. Put a seedling in oven forest and not having issues with leaf burn. Any way to repair or just trash it and start over?

Leaves. Tips - Burnt

Leaves. Curl up

4y ago

5

6

Solved

3th week of Veg. Nuts deficiency or burn? Might it be a root zone issue?Hi. It's 2x reg fem Royal Runtz and 2x reg fem Special Queen #1 from RQS im using CannaAQUA nutrients + Cannazyme and Rhizo. PH is 5.6 EC 1.3-1.35 water temp 23°C on DWC system. Air temp 27.5°C hum.50%-60%.Light is from MarsHydro series FC-E 6500 730W on 80% and 1m above ladies.

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Dark-brown

4y ago

5

5

Solved

Starting nute burn?I have a bit of an issue with yellowing tips of new leaves. Some of the youngest leaves are twisted and the fan leaves start canoeing. I flushed her yesterday and last week, but before that I upped the nute dose and gave a huge fead. Is is a beginning nute burn?

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Twisted

5y ago

3

3

Solved

Surplus or deficiency?Can't tell if there's a surplus of nutrients or a shortage of potassium? One plant looks like nitrogen burn and the other two look like theyre maybe a little k deficient. Was thinking of chilling out on the feed on the burnt one and just feeding micro to the other two. Thoughts?

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Yellow

2y ago

7

4

Solved

lightstress, lockout, nuteburn, nute deficit, age, genetics, ...?lightstress, lockout, nuteburn, nute deficit, age, genetics, ...? place your bets ladies and gentlemen would love to hear your opinion. details in diary week 15 and comment DAY 109 - DAY 61 Flowering Thank you very much 😀

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Yellow

4y ago

3

3

Solved

leaves curling inwards Lemon OG plants having these symptoms. I ve been feeding her 1.8 EC recently. now im giving 1.0 what are your thoughts?

Leaves. Tips - Burnt

Leaves. Curl up

4y ago

4

4

Solved

Tips yellowing is this light burn/stress or Defiency? New growth seems to be lighter green than the rest. Ph is 6.0 Ppm is 580ish (slurry) Light was 11inches away from canopy of tallest plant and 12-13inches from other.… universal_button_show_more

Leaves. Tips - Burnt

Leaves. Curl up

Feeding. Deficiences

5y ago

1

2

Solved

Is this Ph lockout Coco drip setup with the full canna line except boost. Week 7 juicy fruits auto. Feeding at 1.5EC and ph 5.8 to 6.2. I drip for 26 seconds about every 2 hours pump stops as soon as there is run off. Run off was at 5.25 Ph and 1.5 EC. I flushed with ro water with nutes 1.0 5.8.

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Curl up

5y ago

2

Solved

I don't think this is nute burn...So I thought I had a case of mild nute burn but I haven't given the plants any Bloom or Calmag since last Friday, only water so I'm wondering if this is a nute burn issue now. Could it be my PH? Last I tested my run off it was at about 6.65. What's causing this?

Leaves. Edges burnt

Leaves. Tips - Burnt

Leaves. Curl up

4y ago

5

3

Solved

Diagnosis.Can someone diagnose this problem for me please. I'm putting it down to nute burn but would like a second opinion.

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Yellow

6y ago

2

4

Solved

Spots on leaves Strain-dancehall 6 weeks old No Nutrients Ph 6.2-6.4 3 liters every other day New to growing. Out of 3 plants 2 are starting to get spots on leaves near the top. All 3 have discolored leaves at the bottom. Pics are numbered. If anymore info needed just ask

Leaves. Tips - Burnt

Leaves. Curl up

Leaves. Color - Dark-brown

5y ago

1

5