The Grow Awards 2026 🏆 
Leaf problem?
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tangie
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
Help1y ago
9
5
Solved
odrex
Curling leaves with purple tingeHad 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
4y ago
1
Solved
1Right_Angle
Why the canoe effect on Fan leafCan anybody help me ID what is happening to these Fan leaves, at the top of my Black Willie.
Leaf temp is 1c cooler than the room. Leaf 22c, room 23c, rh%55, lite distance 45cm.
The leaf is showing that its folding like a canoe. Always thought that was signs of “ “too hot”.Week 15
Leaves. Curl up
4y ago
1
5
Solved
FeebleSnane
Starting to fade? Or nutrient deficiency?One of my plants has several fan leaves that are turning yellow/purple, and I can't tell if it's low on N or starting to fade. The plants are 2 days into week 5 of flower with a 9-10 week flower period, so it seems a little early for it to be turning colors like this.8mo ago
4
Solved
Happy_Farmer
Help me please! Some nutrient problemHey guys! Can you help me in this guys! The girls start to appear this 2 days ago! What is this ? Some excess or deficiency? The small One also show a start of some problem
Really apreciate any help.
Cheers !Week 2
Leaves. Color - Dark-brown
5y ago
1
2
Solved
phelice
Leafseptoria, ore something else!?Is this Leaf-Septoria? Had the small spots since a few days (looks like they don´t get really bigger) but some leafs start to die like picture 2. looks to me a bit like calcium-deficit, or i´m i wrong?Leaves. Color - Dark-brown
Leaves. Color - Mottling
1y ago
4
4
Solved
MindFlowers68
Slight leaf tip "burn"What do you think is causing this burn on my leaves? It seems to be quite common. and maybe nothing to worry about if it's this minute. but I would prefer to not burn my plants at all if possible. Could it be a sign of underwatering? Light distance? i have a dimmer keepin at 10002y ago
4
3
Solved
GrnMtnGanja
DeficiencyDoes this look like a magnesium deficiency? Getting some yellowing around the edges of some lower fan leaves.Week 5
Leaves. Edges burnt
3y ago
1
3
Solved
majklsoft
continuing nute burn or deficiency now? biobizz lightmix +organic nutes | runoffs EC 1.8-2.5 | PH 6.3 | DLI 45cca 10d ago, I found early signs of overfertilization. I reduced nutes, but yellowing continued. After a flush 2d ago, things got worse (now also edges browning). I now suspect potassium deficiency or still nute burn. Next watering is near—should I flush again or feed properly?Week 7
Leaves. Edges burnt
6mo ago
5
6
Solved
GR0WER
leaf tips curl upSo, it is my problem. Few leaves on the top of the central plant. Idk, what kind of pathology is it and how to kure it.
I guessing overheat, but temperature sensor shows 25°c max, lamp to plant distance is about 30cm.
Also, they aren't smelly no more.
Please, helpWeek 10
Leaves. Curl up
3y ago
1
Solved
Ishkabud
Yellowing cause?What could this yellow and brown spotting be on the uppermost leaves? Also the curling? They are autos, i am giving them half dose of bloom and phospherous nutrients, as well as half dose cal-mag, temperature isnt overly high, watering every 2-3days until runoff.. bit confusedLeaves. Curl up
Leaves. Color - Mottling
2y ago
1
1