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StarCodex
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At last, I've made it to the infirmary. ?

OK so as a follow on from my introduction this would be my first official thread. And it's going to be a long one. 

So

Ive just went into my attic to retrieve the faulty white widow. It's the first time she has been out of the attic to see natural light. And as much as she looks like she has gotten fatter, you'll notice a fair bit of yellowing going on. Just after I copy and paste my post that I wrote out earlier I'm going to check her again for pests.

I couldn't find the diagnosis form to fill in so I found one that should provide enough info

Thanks for the replies. I'm really going to need them to fix this baby, if there is anything untoward. 

My Summary :My grow space consists of a hydrolab 120 x 60 x 160 which is located in my attic. The attic has its normal insulation. But the area that surrounds the tent isn't.

Medium: Jack's magic/Perlite 70/30

Strain: pyramid seeds auto white widow

plant age: day 67 

pot size: 11 litre

Repotted: day 20

Temperature (lights on/lights off): 28/20

Relative humidity: (lights on/lights out ) 55/80

Lighting type: 4 x ISH120 invisible sun boards running at 80% with an Elg240 c2100a driver and 1 x  viparspectra r300w.

Airflow: no extraction/filter yet. Just running a small intake flipped over to allow it to extract. So negative pressure here with the passive intake.

Light schedule: 18/6

Water: ashbeck Mineral water from tesco at first..... now i take water from the bathroom hot water tap collecting the water before it gets hot.

Nutrient and feed schedule: Poundland Bloom and pk boost. 2ml per litre

…........…...............
Notes:

I'd love to be able to determine the pH of the medium and other variables. I'm lazy when it comes to pH and ec. But definitely one day I'll be sure to find this out. 

Running an oil radiator to maintain temps. 

Feeding bloom nutrients once a week. With plain water every 2/3 days 

Ive feed her 2 feeds of pk boost so far. But nothing recently just switching between water then bloom and so forth. 2.5ml-3ml of bloom per litre.

The white widow spent its first month under the viparspectra. As more plants got introduced to the tent it then was placed under the led boards.
It was during this time I felt that her growth was stunted. the driver then was running at its maximum I believe 110% and with the boards being at a 20 inch minimum distance.
Because of the lack of growth. On Friday night I put the ww back under the viparspectra. As i started to believe that the change from blurple to white light possibly stunted her growth.

I don't really believe that this is the case. please correct me.

Another thing too. The white widow is covered in what looks like tiny marks of dry spit or like tiny slug slime trails. All of her fan leaves have turned yellow and I pulled them all off. 

I hope this gives you all enough info to save this awesome looking plant. I don't know what else to say. It took almost a good 2 hours writing this out. There will be something I've missed even though I tried to do what Mothers say an keep things simple.

  • Here's some pics anyway Apologies for the image quality.

DSC 0066
DSC 0055
DSC 0064
DSC 0069
DSC 0067

 

Thank you all. I appreciate your comments. 

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Spit & slug trails sounds like spidermites...check underside of lower leaves with a loupe or similar, they're tiny...hope not for your sake but it does sound that way. Also notice youre not feeding any veg nutes...dont know makeup of poundland nutes but plants still need Nitrogen in bloom so maybe add 1ml veg nutes too

 

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StarCodex
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Aww ffs man you know I checked for that kinda thing last week and I found nothing. Just now I found about 4 tiny yellow almost transparent bugs moving about on one of my leaves.

I don't know what to say. I tried taking a pic but I couldn't get a good focus on them. 

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Macky
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LAme, ok mate:

https://percysgrowroom.com/thrips-on-a-cannabis-plant/

https://percysgrowroom.com/how-to-get-rid-of-spider-mites-on-a-cannabis-plant/

It will be thrips or spider mites. 

Bit later into flower now for pesticides i think. Look at them article and see which ones you think it its and we can go forward from there. 

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StarCodex
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Thrips 99%

What a joke. Where would they have came from? 

Ive never had them before. Why now? 

So is this the likely cause why the ww is kinda on the slow side.

I can't imagine smoking buds that are covered in thrips. 

I had a good look around my other plants and they too are showing the same dried spit pattern. 

I can't think of anything other than dumping all my 9 plants and starting again. ?

 

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Macky
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@thestars

its not as bad as you think mate, easily fixable Smile And if you want to you can wash your buds after harvest to remove the bugs too. itll be fine.

First off, you're in soil right? Let the soil dry out real good. and also use some diatomaceous earth on the surface of the soil, they'll be gone in a week and no pesticides used. It all good man, these things happen, they are fixable 

They spend part of thier lives in the top layers of the medium, and need moisture to survive, if you let it dry out, itll kill them. The DE will shred any trips that try climbing out of the soil. 

Add some sticky traps to the grow room to catch the flying ones too and your sorted mate, no need to get rid of the plants just yet:) 

 

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StarCodex
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Posted by: @macky

@thestars

its not as bad as you think mate, easily fixable Smile And if you want to you can wash your buds after harvest to remove the bugs too. itll be fine.

First off, you're in soil right? Let the soil dry out real good. and also use some diatomaceous earth on the surface of the soil, they'll be gone in a week and no pesticides used. It all good man, these things happen, they are fixable 

They spend part of thier lives in the top layers of the medium, and need moisture to survive, if you let it dry out, itll kill them. The DE will shred any trips that try climbing out of the soil. 

Add some sticky traps to the grow room to catch the flying ones too and your sorted mate, no need to get rid of the plants just yet:) 

 

I feel a wee bit better after reading what you said man. And yea man in soil. Ahhh damn.

I just went and fed her a litre of feed containing veg nutes.... I'll be sure to leave her to dry out next time. 

Could the thrips have been in the bag of soil when I purchased it.? 

Is that earth something I could get today from B&Q.

Does the earth kill the ones that are hidden under the leaves.? 

 

Thanks man 

 

 

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Posted by: @thestars

Thrips 99%

What a joke. Where would they have came from? 

Ive never had them before. Why now? 

So is this the likely cause why the ww is kinda on the slow side.

I can't imagine smoking buds that are covered in thrips. 

I had a good look around my other plants and they too are showing the same dried spit pattern. 

I can't think of anything other than dumping all my 9 plants and starting again. ?

 

As said, not the end of the world, just a pain in the arse...Macky is good with thrips, lol

They can come from anywhere..your intake, on yours/others clothes, on other plants

Adding predators might be a good option...Amblyseius cucumeris will literally eat everything and die off when all thrips are gone as food no longer available

 

 

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Macky
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Predators are always a good option if you can get hold of them. Get some DE from Amazon, let the medium dry out, when it arrives, water/ feed the plants, and let the top of the medium dry a little, then add an inch layer of DE. DE wont work right when it gets wet, so don't water the plants for a few days after applying ot. and when you come to water again, try and feed into the medium via a funnel, so it doesn't wet the DE too much. 

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TempleGrower
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I have some thrips on my little girls right now as well... little bastards they are. I've been using non-residual insecticidal soap(Safer's End All - potassium salts and a bit of pyrethrin)/DE/drying out the soil and it seems to be working. I wouldn't recommend the soap in your case since you're in flower, but depending on how long you have left and if you can get them, the mites are a great option. I'm going to start with nematodes as soon as I transplant but they may not be practical for you, again depending on your chop chop schedule...they take a week or two to get going after you water them into the soil.

Steinernema feltia nematodes front
Steinernema feltia nematodes back

 

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StarCodex
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I'm really keen on using the predatory mites. I wish I could get it locally. I hate waiting for shit to arrive in the post and I hate paying for the next day delivery. It has to be done though.

In the meantime I need to try and start doing something about these thrips. I think I've got an outbreak of them.

One measure I'm going to consider is moving all of the infected plants (there's 6) into my shed. Then totally disinfecting the tent, fans, ducting, and everything else. I've got another 3 white widows that don't look like they have any thrips. I think they will be going outside also. I think you'd agree that this is the only approach. 

Man... I can't believe to think that 6 plants or probably 9 including the already mentioned ww's are all covered in them. They are definitely getting sliced up and sucked on. Wait till I get that earth and sachets on the go.

B@ST@4DS ?

There's a thought that just came into my head. I'd think that the majority of thrip problems is in the medium when you buy it. ?

If so. Could you like microwave your soil to kill all those nasty mites. I'd have asked Google this but I'll wait and see what you guys think. Lol

Cheers 

 

 

 

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Macky
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Thrips are a common pest, and can get into the groom easy mate, through vents, off your clothes or hair. Prevention is better than cure. 

They like to live in top couple of inches of damp medium, most the time it is caused by bad watering technique in soil. Let the top of the medium dry out between watering and you're less likely to have them live in your grow room Smile

You can cook and microwave your soil, it'll stink and kill the microbes too, and you want those microbes happy and alive. They might come in with the medium, but again, if the top 2 inches of soil dry out, they cant live in it. 

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Yeah, hard to say where they came from... I have no idea how I got them either but being so small, not hard for a few to hitch a ride inside. Quarantine and treat is a good plant though. Your thought about the soil is correct too - some premixed stuff definitely has undesirables in it.. I got some ridiculous fungus gnats one year from some soil I bought. I mix my homemade compost into my soil too, so that is definitely a potential source if you're into that kind of thing.  The supersoil is supposed to 'cook' for a couple weeks, and it actually does get pretty warm due to the microbial activity  during this time but, not likely hot enough to kill off the nasties. Try to buy 'sterilized' potting soils if you can find them, but that's not a guarantee either. Actually cooking it definitely works but Macky is right in that you also end up roasting off a lot of your good microbes and whatnot. Ovens with a big turkey roaster pan work well for smaller amounts of soil (heats more evenly than a microwave, and unless you microwave is huge, that's a lot of microwaving ?). Can get kinda tedious/messy for large amounts of soil, unless you have a huge oven. I usually just dose mine when I mix the soil, and again at transplant with a load of beneficials (nematodes in my case) at the start to help quell any potential uprisings, and then just stay clean as best I can. In the winter here in Canada, staying clean is pretty easy... hahaha. Cold AF tho.

All that said, if you're using your soil purely as a medium, rather than a 'living soil' type of thing (I.e., using traditional chem ferts, more towards the hydro way of thinking/feeding, cooking it prior to using wouldn't have as detrimental of an effect, as your not relying on the microbes anyways)

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Macky
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@templegrower

Don't forget how much it stinks to cook the soil too lol 😉 

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Posted by: @macky

@templegrower

Don't forget how much it stinks to cook the soil too lol 😉 

Haha oh yeah, forgot to mention that... definitely want those windows open... ? 

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StarCodex
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Good Afternoon

That's some good reading on those last 3or4 posts. Thanks 

I was eager last night to do something about the thrips. I read about blasting then with water. 

Aww naww ?

I was going to consult you guys about this first but I thought fuck it let's Ave it.

I took all my plants out of the tent and gave it a good clean. Hoovering first then giving it a good wash with a little dettol and fairy liquid. Then afterwards a wipe with vinegar. I then took a plant one by one, down an out of the attic and into my en suite shower room where I blasted the plants with a sharp spray of water. Spraying from under the leaves pointing upwards . Each plant looked a mess afterwards but survived the shock, today they look happier than ever. Unbelievable.... I pulled off alot of the leafs too that looked infected. I suppose at the same time they all got flushed. Amazing. 

The fight isn't over though. Whether or not spraying each plant for a good 2 minutes got rid of some of them, its onto predatory mites. I remember having ladybirds in my shed when I used to grow in there. I wish I could find some now, I was out in my garden earlier searching for them, an all I found was a big European garden spider. That looked pretty scary. 

Anyway moving on. 

Because I ran out of my street smk yesterday I took the decision to try the white widow. I clipped off a wee popcorn bud and into the microwave for 7 minutes using a steam method. The smoke was harsh as always but I was stunned at how lovely I felt. This is why I wanted to do this strain again definitely my favourite..

 

I'm thinking it's time to just harvest the ww now for the high its giving me. I know I should wait for that 5 weeks I mentioned on another thread but then her stone might change. Maybe she won't get fatter. It would be nice to get the extra space in the tent though. I mean 9 plants in a 120 x 60 x 160 is ridiculous. So aye after I post this I'm cutting her down otherwise I'll continue to pick at her like I did with my other plants in the past an befire I know it I'll have nothing left lol. 

DSC 0082

 

Cheers guys a gals enjoy the rest of your Monday. 

 

 

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Macky
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gotta do what you gotta do man lol. If its the back one on the right your all good, she looks good enough to chop at first glance. Better than buying street weed man! 

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Posted by: @macky

gotta do what you gotta do man lol. If its the back one on the right your all good, she looks good enough to chop at first glance. Better than buying street weed man! 

Just say it dude. I think I got a decent amount off the ww. Not great but enough for 4 weeks of bliss.. I got about an oz drying properly, and the rest in a brown box sat on top on my Meanwell driver.. I hope it does me until my other ladies are ready. 

One thing that's worth a mention is that it seems like only a small amount of the thrips got washed away when I showered them. I spent a good 20 mins looking for them with my loupe earlier and I easily found them.. And for the first time I saw one of the ones with wings and I couldn't believe that it flew. Didn't seem to fly far though, more like a hop.. But ffs I need to get this earth and mites ASAP. 

I was also reading that the Amblyseius Cucumeris only attacks the eggs and larvae.

So it it the yellow sticky Traps that catch the adults.? 

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Posted by: @thestars
Posted by: @macky

gotta do what you gotta do man lol. If its the back one on the right your all good, she looks good enough to chop at first glance. Better than buying street weed man! 

 

I was also reading that the Amblyseius Cucumeris only attacks the eggs and larvae.

So it it the yellow sticky Traps that catch the adults.? 

Also eats young adults...the idea is to break the cycle...no eggs/larvae means no recurrence Smile

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Yes mate the yellow sticky traps will attract them and catch them, before they can go and lay more eggs

 

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StarCodex
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Good evening all. 

Its almost Friday and the weekend is ahead of us once again, and so far the predatory mites aren't getting up to much. 

On Tuesday night I placed an order with dragonfli for sachets of Amblyseius cucumeris or thripex plus. I received them yesterday and got them installed straight away. Before I could though I couldn't figure how to activate the sachet. I didn't know until after some research that there was already a pre cut hole. 

The sachets came in just a brown paper bag that wasn't sealed. I couldn't resist but open one up. I knew they'd be hard to see but If I can see the thrips under my loupe then surely I'd see the mites.

I saw very few of them maybe about 4 an I thought wdf am I not seeing anymore, There's meant to be 1000 mites in a sachet. And I've read they get to work straight away. 

As an experiment I put 6 thrip infested leaves into a glass jar along with a sprinkle of the sachet I opened.

Tonight I spent almost an hour looking at the massive majority of thrips. Hardly none of the mites have appeared. There seem to be more than ever now of the aphids Maybe 30+ per leaf. Its un fking believable man. I think by Saturday if there isn't any change then I'm getting in the lady birds. Fk them thrips. 

What do you guys think? 

 

 

 

 

 

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I dont know man, give them some time to breed. Do you have aphids and thrips mate?

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February 22, 2020