The Grow Awards 2026 🏆

Back to Grow Questions

Phosphorus deficiency using canna coco on all auto

Dankbudz84started grow question 5y ago

I have the entire canna line except boost, I have a phosphorus deficiency (dark leaves with a dark blue tint on new and old growth. Which synthetic bottled nute would be recommend to fix this or do I add more a+bmy ec currently at 1.35 and Ph 5.9. Do you seen any other deficienc

Dankbudz84

Solved

Leaves. Color - Dark-purple

likes

InspireMeanswered grow question 5y ago

Hey mate, that looks like a little too much nitrogen. I'm currently battling with an N tox 😝. I'm not seeing an issue with Phosphorus. During the flowering period they use less nitrogen. You want an npk ratio of about 1-3-3 for flower. Hope this helps

likes

Complain

Selected By The Grower

Dankbudz84answered grow question 5y ago

@InspireMe Thanks, is apréciate it, still trying to learn that less is more with autos. I just flushed them, and will be feeding at 1.2

likes

Complain

Similar Grow Questions

Solved

Is this turning purple from temp change So it looks like what I thought was a brown spot (under the grow light), appears to be purple when I pulled it out to get a better look and stake it down. I did switch the light to something cooler, could this be from temp dropping. Not worried yet, just curious. Thanks

Leaves. Color - Dark-purple

Leaves. Color - Dark-brown

6y ago

1

1

Solved

Purpling close to harvest Hey guys just wondering is this a trait of the strain i'm growing or possibly environmental factors that causes this type of leaf colour late in flower? Just curious because maybe I stopped feeding nutes too early and I could have got more out of my plant if feed was kept up.

Leaves. Color - Dark-purple

5y ago

4

4

Solved

Why is one of my plants turning purple at the top?One of my plants is starting to turn purple at the top, both leaves and the bud itself(As shown in photos 3, 5, and 6 for week 11). Could this possibly be bud rot or something I should be worrying about?

Buds. Other

Leaves. Color - Dark-purple

6y ago

2

3

Solved

Purple tips Hi! I'm finishing up flowering and I was wondering what happened that made her tips turn purple. Nutrient burn? Deficiency? Cold (she was exposed to 3 C for a few days)? Genetics?

Buds. Other

Leaves. Color - Dark-purple

4y ago

3

3

Solved

Why is new growth purple at only 3 weeks old?Some of the new growth has been coming in purple. Is this something I should be worried about?

Leaves. Color - Dark-purple

6y ago

3

3

Solved

purple sugar leaves - late in life Some of the sugar leaves have a purple tinge to them in the their final weeks - what is causing this? I have had the same happen to my photoperiod WW X BB.? Thanks :)

Leaves. Color - Dark-purple

3y ago

2

2

Solved

Purple stems and leafs Purple leaf tips and stems - should I be worried?! Pics in diary!

Leaves. Color - Dark-purple

Plant. Stem - Red or purple

4y ago

2

2

Solved

Why don't the buds blow and the leaves are turning red?Why don't the buds blow and the leaves are turning red? How much longer should I wait? Thank you in advance.

Buds. Not fattening

Leaves. Color - Red or pink

Leaves. Color - Dark-purple

3y ago

1

2

Solved

Colour of new growth?Is the purple colour where new growth taking place normal?

Leaves. Color - Dark-purple

6y ago

2

2

Solved

"Wrinkled" Leaves - Dark Color This is my first time growing anything, so I have no idea. Medium is Detroit Co. Great Lakes Water Only Soil. 18/6 light. This girl is 11 days from breaking soil. I'm concerned about the texture of the leaves, they seem almost wrinkled and also dark in color. Any input is appreci

Leaves. Color - Dark-purple

4y ago

4

3

Solved

Plant_Scientist

Nutrient imbalance or healthy development?Are the colors of the leaves a sign of healthy development in the flowering stage, or a sign of nutrient deficiency/excess? After struggling a lot with the nutrition of this plant, I am not sure anymore whether I'm doing it right. Some of the leaves become yellow and fall off.

Leaves. Color - Yellow

Leaves. Color - Dark-purple

4y ago

3

3

Solved

Is the Durban Poison doing alright? The leaves are quite dark compared to the other varieties. My guess it's either a difference in the variety, or a nutrient issues.

Leaves. Color - Dark-purple

7y ago

2

3

Solved

Calmag?3rd day in flower & noticing some rusty spots😅 calcium deficiency or something else?

Leaves. Color - Dark-purple

6y ago

2

1

Solved

Royal Dwarf authomatic. Purple color What do you think is happening? It happened in 24/48 hours. This purple color looks nice but I don't think it's supposed to happen.

Leaves. Color - Dark-purple

5y ago

2

2

Solved

Yellowing leaves - nutrient burn or deficiency?Hey guys, it seems like my plants have some kind of problem. I'm in second week of flower with these autos and lot of leaves started to turn yellow and even purple with occasional spots. Im using Biobizz ferts with their nutrient schedule.

Leaves. Color - Yellow

Leaves. Color - Dark-purple

2y ago

1

Solved

I kind of topped her a lot. I am a new grower. I appreciate suggestions and advice for bigger fatter more potent yields. I’m not there yet. Maybe I over fertilize?

Leaves. Color - Dark-purple

Feeding. Deficiences

Techniques. Topping

4y ago

3

3

Solved

Big dissease I think i have nutrient lock out but don’t know how to fix it it, its 3th week of bloom and its an outside plant. Its getting colder 9 degrees C at night and around 20 at day. Its been raining a lot recently maybe that has something to do with it.

Leaves. Edges burnt

Leaves. Color - Dark-purple

Leaves. Color - Dark-brown

5mo ago

4

4

Solved

Growergirl_1996

Leaves and height issuse What does she need? Some leaves have these dark curled edges and she doesn't grow in heigh. Week 4 after germination ,ph soil 6.5, nutrients Bio grow but only half amount, light Mars Hydro TS 1000

Leaves. Curl down

Leaves. Color - Dark-purple

Plant. Too short

4y ago

1

1

Solved

Yellow and purple leaves I stopped feeding beginning of the week because I had yellow tops on one of my buds. I think it is causing yellow leaves. Does that sound correct? Also I am seeing sort of a purple colouring on some of the leaves. Is that okay?

Leaves. Color - Yellow

Leaves. Color - Dark-purple

3y ago

4

Solved

Phosphorus deficiency ?I'm not sure but I think it's a Phosphorus deficiency, right ? And if it is, how can I fix that ? just adding more alga bloom ?

Leaves. Color - Pale

Leaves. Color - Dark-purple

Leaves. Color - Black or grey

3y ago

4

3