The Grow Awards 2026 🏆

Back to Grow Questions

Stalk and Petiole coloring

InstantT33started grow question 5y ago

The majority of my BB’s stalk and petioles are a bluish color. Toward the base of the stalk there’s an area that looks like it’s been skinned, or burnt. Any ideas?

InstantT33

InstantT33

InstantT33

Solved

Plant. Stem - Red or purple

likes

NobodysBudsanswered grow question 5y ago

ensure substrate pH is correct. possibly a trace element symptom, but those are rare in soil. (rust colored stalk) Blueish petiolse possibly P-def. But, could also be related to pH 6.8-ish is best in soil. Slightly acidic is the goal. Do this first... then move on to possibly changing nutrients.. . if this is off.. give it a week to see how it reacts to change. Nosedive should not be ignored, but be patient. Takes time for changes to impact plant. watering habits? stick to a wet-dry cycle. allow 1" to dry before irrigating or fertilizing. Try not to leave standing water on the leaves. You'll grow mildew or worse.

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

leaves curling down Hey all, first time grower here. My plants have hanging / curling down leaves. The soil is dry on the top but still wet a few cm deep. The light is 35 cm above the plants and 60 watts. Light cycle is 18 / 6. No nutrients added Plant 1 has a lite purple stem Thanks alot!

Leaves. Curl down

Plant. Stem - Red or purple

2y ago

1

1

Solved

Deficiency and assimetric development My girls seem to have a deficiency, strangely enough, the gal with the most signs of deficiency is doing the best in bud production. Any ideas on what is going on here and what is the cause of the deficiency? There is also some purple on the stem

Buds. Not fattening

Leaves. Veins - yellow between

Plant. Stem - Red or purple

3y ago

5

9

Solved

Red/purple stems and Stunted grow Girl Scout monkey and Funky Magnifera have red stems. I gave nutes a few days ago and it cleared all the red stems except for these two. My PH is 6.3 so idk why this is?? Blood orange haze seems little small and can't tell if its stunted. Should I wait or plant another?

Plant. Stem - Red or purple

3y ago

1

1

Solved

Yellowing lower fan leaves, a few red stems; N/Mg deficiency or normal low leaf die-off?Is this a Mg or N deficiency or are these leaves naturally dying off? Showing on only one of two plants so far. Appears only on lowest fan leaves. F20, 7L pots BioBizz AllMix and nutes (1mL/L Grow and 2mL/L Bloom). Temp/RH are good. Can't measure pH. Local soft tap water 7-8pH.

Leaves. Edges burnt

Leaves. Color - Yellow

Plant. Stem - Red or purple

5y ago

2

1

Solved

What causes the stem to be redish? Is this normal or a sign of deficieny? Or does she lack nutrient? If so what nutrient?

Plant. Stem - Red or purple

3y ago

4

5

Solved

Stunted Growth, Continue?Hello growers, My plants are 14 days from breaking soil, my question is will these young plants survive with the temperatures they're experiencing? I'm not sure why else they would be so small for how old they are. Thinking I might get a heated seedling pad and start over.

Plant. Too short

Plant. Stem - Red or purple

5y ago

4

4

Solved

PH issue ?Hi guys! Could you please advise what is the problem with my Chempie and how to deal with this issue ?

Leaves. Color - Dark-brown

Leaves. Color - Black or grey

Plant. Stem - Red or purple

5y ago

3

2

Solved

InkedPhoenix420

Is she too far gone?Plant is 8 weeks old. Noticed yellowing of leaves and burned looking tips so start treating with cal mag but she doesn’t seem to be getting better. Do I carry on or give up on her?

Leaves. Color - Yellow

Plant. Stem - Red or purple

4y ago

1

2

Solved

Is my seedling dead?I’m a freshman with growing Is my seedling done or is there still a chance for her? She was healthy looking a couple days ago but I felt she was stunted. The healthy photo is 2 weeks into veg so I moved my spider farmer sf1000 Around 8-10inchs from her and she shriveled up

Plant. Wilting

Plant. Stem - Red or purple

5y ago

4

3

Solved

Never used Coco soil before first time grower lol, is biobizz allmix any good? I'm using the dreaded mg wish I did my homework first but u live and learn. Just having an absolute nightmare with the slow release nutes phosphorus deficiency and low pH run off any ideas please 🙏

Plant. Stem - Red or purple

Setup. Strains - Photoperiod

4y ago

1

1

Solved

Seedling weird colours, whats wrong with it?My seedling just sprouted and its a weird colour. I've never seen this and I've grown 3 plants previously. I was curious what people thought it could be.. Its planted in all mix, used straight to soil for germination , the leaves haven't opened either yet

Plant. Stem - Red or purple

Setup. Seedling

5y ago

3

3

Solved

Can anyone help me please, I'm trying to sort my pH in my media it's a phosphorus deficiency do I need to flush with pH water and adjust nutrient Can anyone help me please, I'm trying to sort my pH in my media ( miracle gro ) I know it's a n experiment anyway the girls are 6 and a half weeks now and I'm starting to get red stems on leafs. I've read it's a phosphorus deficiency do I have to flush my 7 has gallon smart pots?

Plant. Stem - Red or purple

4y ago

1

1

Solved

Does critical kush have purple stems?Does critical kush have purple stems? I cant seem to get rid of them and dont know if theyre genetic.

Plant. Stem - Red or purple

5y ago

2

2

Solved

Phosphorus? Potassium? CalMag? What is going on here?So in week 8 after flushing with EC 0.4 and giving extra PK 13/14 afterwards (EC 1.9) there are still problems occurring. I personally think it’s a deficiency of potassium and phosphorus. Can anybody give me some advice or tell me how to fix it? Thanks!

Leaves. Other

Plant. Stem - Red or purple

Feeding. Deficiences

5y ago

2

2

Solved

What do redish stems mean?What do redish stems mean? Is it something I should keep an eye on and worry about it at all? The led they r under puts off more blue light. Input and advice greatly appreciated

Plant. Stem - Red or purple

5y ago

1

2

Solved

autogrowmadness

Health Hi ladys and gents , can someone tell me why my 5 week old zkittkez auto is starting to turn abit dark green ? And also some of the fan leaves are turning red and purple at the stems. And also if my plant is over all healthy? First grow so im just hoping for the best

Plant. Stem - Red or purple

5y ago

2

3

Solved

Deficiency or genetic?Hey growmies, I need your help again 🙂 the French Macaron have purple stems since three days and no other signs of deficiency or burn. I know that this strain getting really dark an purple, but so early? Night Temps are between 18-20°. Thanks and stay safe

Plant. Stem - Red or purple

6y ago

9

5

Solved

Tallos morados Que otras causas a parte de el exceso de luz puede provocar hojas decidas y amoratamiento o enrojecimiento de el tallo y los pecíolos?

Plant. Stem - Red or purple

3y ago

5

Solved

I need help!Can anyone help with a diagnosis please? Leaves are a very pale green/yellow and stems and leaf veins have turned purple. Transplanted 1 week ago in fresh pre-fertilised soil, getting only water for last 2 weeks. Lady behind her is her sister (from seed) and getting same regime.

Leaves. Color - Pale

Plant. Stem - Red or purple

Feeding. Deficiences

3y ago

1

3

Solved

Calcium Deficiency???So this is a Calcium Deficiency right? Noticing on top leaves. Not bad yet but want to stop it before it starts as this grow has been my best so far. I have been using CalMag every water but I did lower the dose for a few days as I was told I was using too much for flower.

Leaves. Color - Mottling

Plant. Stem - Red or purple

2y ago

2

1