Late Flower White Pistils

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SubiBoost

Member
Hey guys. I'm still fairly new to growing. Been growing in 2 seperate tents, 4x4' for veg and 8x4' for flower.

Flower tent has:

1000watt HPS cool tube (@30" above canopy) with 6' fan inline and filter on one side
MH 1000 and MH 4000 LED (20-24" above canopy) on the other. I have a dehum in there as well as AC to keep everything in check. 2 big fans moving air above and below.
Drain to waste with air pots and fabric pots
Coco 70% Perlite 30% and Synergy

Veg Tent isn't an issue but it's a 1000watt MH with 6" fan and filter as well. DTW table, fan and dehum.

Both tents are around 74-79°F daytime Temps and around 65-70 night time. Humidity is never over 50% in Flower and rarely over 55% in veg.

My issue is this, later in Flower I seem to get foxtailing (sometimes extreme) or some extra white pistils towards the end of Flower, weeks 6-9. I was sure this is usually light intensity or heat but my heat is great, even leaf Temps are around 75°. So maybe my lights are too intense in the tent? I've tried pulling them up as far as possible and turning down wattage/brightness at different times in the flowering stage. Usually it results in loose buds though. Could it be nutrients? Soil conditions? Anything I should be adding for root maintenance in Flower?

I'm running CalMag Micro Gro Bloom Diamond Nectar Big Bud Overdrive and Bud Candy. B52 in veg and h202 as maintenance when needed.

Mostly everything has been the same since I started growing 2-3 years ago. This all started happening about 8-12 months ago, and I can't seem to shake it since. Used to grow phenomenal buds (and I'm not trying to toot my own horn here but I was baffled most harvests..and alot of friends and family too) and now it seems to be hit or miss and I'm legit embarassed to show anyone anymore. I blamed genetics alot to start lol but now I'm sure it's something either I'm doing or environmental.

Thanks in advance to any suggestions. I'm not really one to reach out for help (hence how many harvests I've had before asking lol)

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S

SubiBoost

Member
Also my solution is usually 5.9-6.0 and 1100-1300ppm. Run off is checked often, I go for about 20-30% run off every 1.5-2 days when I feed. 5 gallon pots
 
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EvilJ

Well-Known Member
Had same issue on my last grow, I was 13 weeks in and new White pistols were forming. All my other plants finished fine. I’m definitely filling to see what the verdict is
 
SpectacularG

SpectacularG

Well-Known Member
What I found so far,

If you have genetics, heat and lights under control then looks like these are your best bets

Overfeeding
Overfeeding, particularly with high levels of phosphorus, and the use of growth hormones can result in foxtailing. Additionally, excessive pruning or defoliation during the flowering stage can trigger the growth of foxtails.

Avoid excessive pruning or defoliation
Refrain from heavy pruning or defoliation during the flowering stage, as this can trigger foxtailing. Allow your plants to focus their energy on producing dense, high-quality buds filled with vital cannabis’ trichomes.

Imbalanced Soil Condition
What happens beneath the soil can also has an impact on your weed plants. If factors such as pH levels and microbial activity become imbalanced, cannabis plants will start to experience increasing stress and finally lead to foxtailing flowers. For example, when cannabis is suffering from Cal-Mag deficiency.

Microbial Balance
If you suspect a nematode infestation, introduce beneficial microbes like mycorrhizal fungi and rhizobacteria into your potting mixes at the beginning of the growing cycle.

Some strains will just foxtail ny nature I am growing SSSDH and even the breeder rez dog in his picture has foxtailing so I already know what to expect.
Hope it helps, I would gamble that its a combination of lack of beneficial microbes in the soil and slightly too high feeding ec for this particular strain, just guesses hope this will direct you to solving your problem
 
S

SubiBoost

Member
SpectacularG said:
What I found so far,

If you have genetics, heat and lights under control then looks like these are your best bets

Overfeeding
Overfeeding, particularly with high levels of phosphorus, and the use of growth hormones can result in foxtailing. Additionally, excessive pruning or defoliation during the flowering stage can trigger the growth of foxtails.

Avoid excessive pruning or defoliation
Refrain from heavy pruning or defoliation during the flowering stage, as this can trigger foxtailing. Allow your plants to focus their energy on producing dense, high-quality buds filled with vital cannabis’ trichomes.

Imbalanced Soil Condition
What happens beneath the soil can also has an impact on your weed plants. If factors such as pH levels and microbial activity become imbalanced, cannabis plants will start to experience increasing stress and finally lead to foxtailing flowers. For example, when cannabis is suffering from Cal-Mag deficiency.

Microbial Balance
If you suspect a nematode infestation, introduce beneficial microbes like mycorrhizal fungi and rhizobacteria into your potting mixes at the beginning of the growing cycle.

Some strains will just foxtail ny nature I am growing SSSDH and even the breeder rez dog in his picture has foxtailing so I already know what to expect.
Hope it helps, I would gamble that its a combination of lack of beneficial microbes in the soil and slightly too high feeding ec for this particular strain, just guesses hope this will direct you to solving your problem
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Thanks man. I've considered my pruning to be the culprit before. I do go a little aggressive sometimes when they're getting really out of control but I try to do most of it during the first 2 weeks. Different reading I've done seems to points towards first 3 weeks being ok but light and leaves only so that might be it.

Soil conditions make sense too, alot of good info there though. Thanks again
 
S

SubiBoost

Member
EvilJ said:
Had same issue on my last grow, I was 13 weeks in and new White pistols were forming. All my other plants finished fine. I’m definitely filling to see what the verdict is
Click to expand...
Yeah it's been fine with certain strains and others seem more extreme so it's hard to pinpoint. Could be that some of my strains are more resilient to whatever is happening and the one that are impacted are sensitive to it I suppose.
 
Thundercat

Thundercat

Well-Known Member
I don’t see any foxtails or any major issues with the buds in those pictures.

How often are you feeding?

Have you been running the same genetics this whole time? Different plants will need different feeding and conditions.

from what you’ve posted so far my first thoughts are; if you have been getting foxtails on some plants, that maybe you are feeding a little high for those genetics, and maybe not quite frequent enough run off for the medium. Your plants all seem pretty dark green and some even have slightly burned tips.

I'm not a coco grower, but from what I’ve seen in other people grows over many years, coco seems to benefit most from frequent low ppm feedings with decent run off each watering. Lowering the ppm and potentially increasing the frequency may give a better balance.

Also you mentioned that this happens “towards the end of flower in weeks 6-9”. Honestly most plants don’t finish in less then 10 weeks from 12/12 and many take 11-13 so it’s also possible you are harvesting plants while they are just still trying to grow.
 
S

SubiBoost

Member
Thundercat said:
I don’t see any foxtails or any major issues with the buds in those pictures.

How often are you feeding?

Have you been running the same genetics this whole time? Different plants will need different feeding and conditions.

from what you’ve posted so far my first thoughts are; if you have been getting foxtails on some plants, that maybe you are feeding a little high for those genetics, and maybe not quite frequent enough run off for the medium. Your plants all seem pretty dark green and some even have slightly burned tips.

I'm not a coco grower, but from what I’ve seen in other people grows over many years, coco seems to benefit most from frequent low ppm feedings with decent run off each watering.

Also you mentioned that this happens “towards the end of flower in weeks 6-9”. Honestly most plants don’t finish unless then 10 weeks from 12/12 and many take 11-13 so it’s also possible you are harvesting plants while they are just still trying to grow.
Click to expand...
I usually feed every 1.5-2 days. I used to do micro daily feeding but ended up with gnats once so I went to kind of an as needed feed, I don't ever let it dry out completely but I let the top dry out before feeding.

Yeah you could be onto something. I keep the same cultivars when they're really good but usually I try new seeds every 2 harvests. Clone once and dump unless it's super nice. I miss alot of those haha. I'm probably just not good enough to know what different strains need just yet.

All good points thanks
 
S

SubiBoost

Member
Thundercat said:
I don’t see any foxtails or any major issues with the buds in those pictures.

How often are you feeding?

Have you been running the same genetics this whole time? Different plants will need different feeding and conditions.

from what you’ve posted so far my first thoughts are; if you have been getting foxtails on some plants, that maybe you are feeding a little high for those genetics, and maybe not quite frequent enough run off for the medium. Your plants all seem pretty dark green and some even have slightly burned tips.

I'm not a coco grower, but from what I’ve seen in other people grows over many years, coco seems to benefit most from frequent low ppm feedings with decent run off each watering. Lowering the ppm and potentially increasing the frequency may give a better balance.

Also you mentioned that this happens “towards the end of flower in weeks 6-9”. Honestly most plants don’t finish in less then 10 weeks from 12/12 and many take 11-13 so it’s also possible you are harvesting plants while they are just still trying to grow.
Click to expand...
Also I start my flowering count after the first week of pistils showing after the flip, I don't start counting at the flip. From what I've experienced and read, coco generally finishes a little earlier like hydro. But I see what you mean. I usually opt for strains in the 8-10 week range purposefully but I'm usually harvesting at 20% amber trichromes and remaining all cloudy, if it's an indica. Even if the white pistils are still there.
 
curious2garden

curious2garden

Well-Known Mod
Staff member
SubiBoost said:
70 coco 30% Perlite with synergy
Click to expand...
What is Synergy? That's not something I'm familiar with could you provide a link to that.

SubiBoost said:
I usually feed every 1.5-2 days. I used to do micro daily feeding but ended up with gnats once so I went to kind of an as needed feed, I don't ever let it dry out completely but I let the top dry out before feeding.
Click to expand...
You have to fertigate coco or you upset it's CEC. Further if you get dry back you can get some salt burn and I see a hint of that in one of your pics which is why I chimed in. A simple way to treat your fungus gnats is 1 oz of Monterey Spinosad in 1 gallon of your nutrients every three days until they are gone then I usually use it once weekly as a preventative.
 
S

SubiBoost

Member
curious2garden said:
What is Synergy? That's not something I'm familiar with could you provide a link to that.

It's a mycorrhizae, here's a link.
https://www.grotek.com/product-page/synergyGrotek makes it. My local shop had a grotek sale so I switched briefly. Only one I still use on occasion is their Monster Bloom instead of Big Bud. I have a huge tub of it lol.

You have to fertigate coco or you upset it's CEC. Further if you get dry back you can get some salt burn and I see a hint of that in one of your pics which is why I chimed in. A simple way to treat your fungus gnats is 1 oz of Monterey Spinosad in 1 gallon of your nutrients every three days until they are gone then I usually use it once weekly as a preventative.
Click to expand...
Ok, this is a good point. I'll start my new round with daily feeding again. Would you run clean water through every once and a while too? That seems to be a debated topic.
 
S

SubiBoost

Member
SubiBoost said:
Ok, this is a good point. I'll start my new round with daily feeding again. Would you run clean water through every once and a while too? That seems to be a debated topic.
Click to expand...
It's a mycorrhizae, here's a link.
https://www.grotek.com/product-page/synergyGrotek makes it. My local shop had a grotek sale so I switched briefly. Only one I still use on occasion is their Monster Bloom instead of Big Bud. I have a huge tub of it lol.
 
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