p0opstlnksal0t
Well-Known Member
I've noticed that in almost all of the LED grows I've seen on Instagram and here on the board heavy foxtailing buds. Is this just a common trait with the spectrum and light that we use in comparison to HPS?
LED grows and foxtailing buds.. common trait in all LED grows?
- Thread starter p0opstlnksal0t
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FastFreddi
Well-Known Member
I haven't myself but interesting observation. Maybe higher ambient temps for transpiration is the cause?
FF
Oliver Pantsoff
Well-Known Member
I dont think so..I've been working with LED's for a couple of years. Never experienced foxtailing...
OP
OP
newbplantgrower420
Well-Known Member
havent experienced foxtailing from LEDs.
but i have experienced getting purple stems in both veg and flower since switching from HPS... same strain. I upped the epsom salt on top of my base to 1g/gal this veg run. but theres still quite a bit of purple. otherwise theyre purty damn healthy.
but i have experienced getting purple stems in both veg and flower since switching from HPS... same strain. I upped the epsom salt on top of my base to 1g/gal this veg run. but theres still quite a bit of purple. otherwise theyre purty damn healthy.
HydroKid239
Well-Known Member
That could very well be sunburn from the light.
But to the Original Poster: I have experienced foxtailing only using blurples. I think it's a heat issue at the canopy. I could be wrong.
p0opstlnksal0t
Well-Known Member
Even on big name Instagram posts I see like Miami Mango and whatnot I see a lot of fox tailed buds under LEDs It's odd
farmingfisherman
Well-Known Member
Plants grown under LED's require more food so growers switching from HPS/MH often under feed until getting things dialed, so I've been told.
HydroKid239
Well-Known Member
I think a lot of them over do it on the lighting. I like the idea of dimming my lights back to 60% and dropping them to 12-15" for the last
couple of weeks in flower. They probably blast them at 100% til chop.
FastFreddi
Well-Known Member
Dimming or raising lights, along with slightly cooler temmps last two weeks = dense buds.
FF
FF
SheeshM
Well-Known Member
I think @HydroKid239 may be right. I got foxtailing on one of two strains on my first grow with a new HLG 550 v2. I had the light at 100%, 18-22" away for second half of flower. 80-82 temp, RH in the 40's. I may try 70% ish for all of flower next grow, but I'm not sure.
The photo with foxtailing is a Nirvana OG Kush. The one without foxtailiing is Nirvana Blackjack in the same tent.
The photo with foxtailing is a Nirvana OG Kush. The one without foxtailiing is Nirvana Blackjack in the same tent.
HydroKid239
Well-Known Member
In your case I think it show the stronger genetics can resist more maybe?
Edit: I also do believe I was told to mimic mother nature indoors for the best results.
I'm not about to give my girls a rainy shower lol , but I think the cloudy days with less
sun in sept/oct play a part.. which brings me to the theory that giving them less light
late in flower may be a good thing when it comes to a clean finish.
radiant Rudy
Well-Known Member
i think it is strain specific. Ive gotten a bunch of FTs but usually on summer grows. Def not a characteristic across the led board. Ive grown plenty of perfectly shaped flowers
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radiant Rudy
Well-Known Member
I think i need to plead guilty. About how much ppfd are you radiating those last weeks?
I bet it is P. I never get purple stems. I'm a chronic user of PSB
SheeshM
Well-Known Member
Makes sense, the blackjack seemed fine with the light intensity and had nice barrel shaped buds with the same feed and conditions.
LED lights do not cause any kind of nutrient deficiency; purple streaks on stems and petioles are a normal response to exposure to ultraviolet (UV) light. It can also be a Mg deficiency, but if you are adding Cal/Mag or just Epsom Salts and still see purple, all is probably fine.
Gemtree
Well-Known Member
Purple woody stems can be from cold wet roots/overwatering too which locks out nutes.
radiant Rudy
Well-Known Member
No. Very few led rigs have any UV at all. I run a uv tube, as i said earlier, i have zero purple petioles. Purple petioles and stems is correlated with P deficiency and or cold temps. Im not making shit up. This is an accepted agronomic diagnostic fact.
Be your own boss, google "phosphorous deficiecy symptoms" the purpling is common in many crops. Dont guess and stuff random minerals (Ca, Mg, S etc) into your substrate without good evidence* of a deficit, i.e*. Soil Test, plant sap analysis
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Southside112
Well-Known Member
I've noticed foxtailing on some of my led grows as well. I think its a combination of genetics and light intensity. People still underestimate the power of led. I've got cobs and qb and never run them closer than 18" from canopy.
a mongo frog
Well-Known Member
Which lamp are you testing? Biggest turnoff of led is the un natural looking fox tailing. Ive tested QB boards and cob arrays and for me both terrible looking results with fox tailing. GPW was obviously way bigger VS hps, however where i live everyone likes to show each other their fruits of their harvest and the shit looking fox tailing has to be stopped. Maybe i ran my current to high IDK.