Vote Now 🏆 for the Grow Awards 2025!
By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy
Accept
Phosphorous deficiency?
MFKIMOstarted grow question 3 hours ago
I have been dealing with this for a few weeks
Looks like a phosphorus deficiency to me
I have been giving 0.2g/L of a PK 52-34 once a week for 2 weeks.
Base substrate is silty, high in PPM and little alkaline, poor in absorbable nutrients. Sunny UV 13 most of the time.
like
Answer
Similar Grow Questions
Solved
Bunterbiber
curled/twisted leaves - root cause?Several leaves of my Kalini Asia plant are curling/twisted (see pictures). Since I don't see any pest insects at the moment I don't have a glue what it could be. Anyone knows what it is (today I started to spray neem oil on the leaves.)? Thanks in advance for your help!Week 9
Leaves. Twisted
8 months ago
6
2
Solved
taprootArmy
Leaves+stem drooping, stems did turn purple - caused by climate change? or watering problem?what should I do?
history:
21.05. Water with full dose of fertilizer
...
26.05. Soil really dry - Water with half dose of fertilizer
27.05. Plants look super healthy (24°C 55-60%RLF)
28.05. started to droop (27°C 40-45%RLF)
29.05. even worse, (25°C 45%RLF), surface still moist8 months ago
3
Solved
SaiMutsu
Weird splotchesNot sure what this could be, I'm thinking phosphorous deficiency, the dots are weird though.Leaves. Twisted
Leaves. Color - Dark-purple
8 months ago
1
1
Solved
Fatherof7trees
Bugs, lights, nutrients, fan?Curling and new growth twisted. I've seen a few what look like soil mites on fabric pot but not plant. Treated with insecticidal soap and cold pressed neem oil. Also flushed, moved light and fan up and added silica to defend against pests. Any help is appreciated? Have you seenLeaves. Twisted
8 months ago
1
1
Solved
Nontraveller
Begginner needs help.The first plant is in 10th day. It looks so weird. Im using biobizz light mix and Harvest Master Pro RB330. Dimmer is 50% and space between plant and light is 45cm. I've got Biobizz grow-bloom-topmax. Can you help me? :(
2. plant is in 3rd day. I want grow this one in properwayLeaves. Too few
Leaves. Twisted
Leaves. Color - Yellow
9 months ago
2
2
Solved
Gisbert
Längs gerollte BlätterEin paar meiner Blätter rollen sich längs ein, jemand eine Idee wo das Problem liegt?Week 10
Leaves. Twisted
7 months ago
3
4
Solved
Burton1988
Hi growers what do you think let it grow or throwit away? bad genetics it's 3 week old and it doesn't seem to be getting better.Leaves. Twisted
7 months ago
2
1
Solved
CannaMom2
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.a year ago
2
1
Solved
Sea_Weasel
Dark Green Leaves and Purple StemsPlant B has had no nutes its entire life in FFHF soil (3 weeks). Stems are a purplish color and starting to droop a little. Water is always pH'd around 6.3 but I haven't tested the runoff yet. Phosphorus deficiency? Heat Stress? Watering conflict? NL Photo just started flowering.Week 5
Plant. Stem - Red or purple
a year ago
1
2
Solved
Jaked
The stems began to turn redGuys, I need your help!
The stems began to turn red. Yesterday it was less, but today it is more saturated and spreads to the veins of the leaves.
Could it be a phosphorus deficiency, or am I worrying for nothing? And what is better to do in this case?Plant. Stem - Red or purple
a year ago
6
4
Solved
Jaked
I added mycorrhiza to the coco coir from a local store. It turned out that there is slow release fertilizers in it. Was not indicated on the packaging.Please Help!
First time after watering with 5.7pH 400ppm drainage water was 6.7pH and 800ppm. I flushed her to 400ppm.
Yesterday was the second watering (450ppm, 5.7pH) and drain was 700ppm 6.7pH. I flushed her to 460ppm (1.5l of water), but pH still 6.6
How to fix it?Leaves. Twisted
Feeding. Other
a year ago
2
2
Solved
jeannoTapin
Royal highness with purple stem. Is it a problem?
Plant seem to be health
Day temp is 26°C
Night temp is 18-20°CWeek 8
Plant. Stem - Red or purple
a year ago
7
4
Solved
Chubaka26
Male or female?Please help me identify this Little plant. IT îs Male or female? Thank you!Plant. Stem - Red or purple
a year ago
1
1
Solved
SlamFM
Natural or Problem?Is this natural yellowing or is there a problem? pH to 6.3 and runoff is 5.7. The stem is awfully purple, watering/feeding is where I struggle. 1st pic - 4/21 and 2nd pic - today(4/24). Seems to have escalated over the last few days. Do-si-do auto about 10 weeks.Leaves. Color - Yellow
Plant. Stem - Red or purple
9 months ago
3
5
Solved
Iwack
leaves curling downHey 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
9 months ago
1
1
Solved
sylix
Is this leaf deformation normal?Can anyone tell me if this is normal and how I can fix itLeaves. Twisted
9 months ago
5
5