Cool thanks. I think it’s funny watching the spider mites dangle…even though I want them gone. I feel like an idiot for not even noticing them. The spider mites did their work in day. It started like powdery mildew/nute burn to me and then thanks to Garrigan I find the army of buggers living on my plant. Hoping they’re dead tomorrow.
I’em glad the DE is working for ya it worked for me and you will be back on course in no time
Will
Me too. Day 2, bug movement has dramatically decreased. Spider mites still dang, but they’re not moving as much either. One thing I noticed is how crazy the spider mites went after I applied it, I swear they have made little fotresses in the nodes. I think I am going to dust them again just to make sure.
Hey MgS do you know how easy is it for the spider mites and thrips get onto the plant from my clothes? I won’t be working this job all summer but I am wondering how to defend about these guys.
I don’t think there is a whole lot you can do, but keep a close eye on your crop . I my self brought them in and had them as bad as
you do. But don’t worry you got it in time.
Will
I just bought a bag of DE today. Something was eating my baby leaves. I spread it all over the soil and on the plant. I used gloves as I didn’t know if it was toxic or not. The diatomaceous earth was only $7 for a big bag at Lowes.
MT1
The stuff at the garden supply store is made of the food grade stuff, totally non-toxic, in fact it is edible and an additive in some food products (you can buy food grade stuff as a health food additive), it possibly even supplies some much needed minerals while getting rid of parasites in your gut. Just don’t breath the fine dust.
Thanks MacGyver for the info. I held my breath while I applied it so I wouldn’t breathe in the powdery dust. 
Is it working for you MT1 Worked great for me. It’s just about off all my plants when I harvest in two more weeks i’ll dip them in warm water to help wash off what’s left
Will
Haha I wore latex gloves too. Then I read that you can eat it and feel stupid. I guess rather safe than sorry though. I learned not to breathe the dust the hard way.
Can anyone tell me if this is powdery mildew? I just notice it today because I can’t bend my back or legs enough to get close enough.
These plants are out side in fox Farms ocean On top of soil. Ph soil is in the 6.5 area.
Water is ph is 6.2. I will try to get some leaves tomorrow to look closer. Since its been hot here I have misted them with reg water that it 7.5 ph. This was done in the afternoon. My water has a lot of a Alkali in it could this be the dried stuff that was in water?
I hope this helps you out Will
Powdery Mildew
Mildew spores can be brought into the grow room through air ventilation into your grow room, your cloths, pets and be carried by animals outdoors. and land on the plant infecting other parts of the plant, buds, stems, stalks and leaves, also spores can land on indoor grow room walls, tubes, growing equipment, hoods, ballast’s, cords and etc. Spores can remain dormant until environment factors trigger it, like high humidity and cool temperatures, poor air circulation. Powdery mildew in vegetative growth is much easier to rid than in the later stages of flowering. Night time temperatures and moisture triggers spores to be released. The mildew eventually covers and coats the plant thus reducing the process of photosynthesis. If left untreated powdery mildew will infect all plants in your garden and coat your plants in flour like substance and cause leaves to “suffocate” Yellow and die off. If your plants are in flowering, depending how far into flowering, your buds will eventually become infected and will not be able to be used. Buds will have a stale moist smell and will be coated with a white powdery substance that can’t be removed no matter what you do. Very early detection in flowering plants that have powdery mildew is extremely important, the longer you wait in flowering the more impossible it gets to eradicate this, due to this, bud size gets bigger in flowering and having high humidity temperatures over 65% can trigger active spores to start, not only powdery mildew, but triggers other problems from it, like bud rot. Not only will you have lower yield, but you won’t have any buds, due to the fact mold has crippled your harvest.
Strains vary in susceptibility to molds, just like other pathogens and nutrient requirements and care.
Prevent and Control
Symptoms of your plants having powdery mildew include: white blotches of furry stuff and white spots or splotches that you can wipe off, having humidity that is over 65%, also starts on darker areas of the plant and spreads to the top. Darker areas on your plant that do not get a lot of light will start to show this first, then when spores become active it spreads to everything. The longer you let it go the harder it will be to eradicate, late flowering plants that have this are extremely hard to get rid of, due to bud density thicker in late flowering plants, because of this the mildew attacks the buds which you can’t cure mildew once it affects the buds.(also known as Bud Rot)Plants that are stressed from environment factors, or fighting pest’s will be taken over more by this mold, due to the fact it’s already fighting problems. If you see your stressed plants getting it first, try to isolate the plant and bring down humidity, better air ventilation and or negative air pressure grow room. If you have mildew with your fans running, you will need to take them down and clean them as the fans can spread spores around the room. You will need to wash down everything in your indoor grow room, spores land on everything, so everything needs to be washed with mild hot water and bleach solution. Removing infected leaves from the grow room is critical, carefully removing them and trying to not knock spores into the air is a challenge. Applying a bag over infected leaves and tying it shut then removing it helps out with not knocking up spores in the air. Making sure you use h202 on stems that have open wounds from leaves that was removed. DO NOT water when lights are going to be going out, doing this keeps water on the plants soil and causes higher humidity levels, this goes for foliar feeding. Water plants when lights first come on or there is at least 5 hours left of lights on. You want to reduce the amount of humidity as possible if your levels of RH are high, you want to keep your humidity levels around 40 to 50%, and anything over 60% is going to trigger problems. Also keeping plants spaced apart allowing maximum air flow in between plants will help minimize plant to plant infection. Using a dehumidifier can greatly reduce humidity issues. Using a meter that tells your grow room conditions like temperature, RH and time can help combat your problems, by keeping track before and after you water can tell you how much if any your humidity can rise after changes made to the grow room. Sulphur Burner is another way to prevent and kill powdery mildew by vaporizing spores in the air. (Do not apply sulfur when air temperature is near or over 90°F) Controlling your mildew outdoors can be somewhat of a challenge, you can’t control outdoor temperatures, or environmental factors, Using Vapor Gard,Wilt Pruf sprayed over the leaves can prevent infection’s.
You will need to treat your plants with various organic and chemical controls. This list will work for indoor and outdoor growers in killing and preventing Powdery Mildew. Outdoor growers can use Organics List below to help prevent Powdery Mildew of starting, even after it has started using anything below will help kill it off. (Note: When using chemical and or organic control methods, do not spray the buds, and for health and safety reasons, stay away from spraying around the buds if all possible.)
AQ10
Serenade
Plant Shield
Garden Disease Control
Fungicide containing Lime, Sulphur
JMS Stylet Oil
Saf-T-Side Spray Oil
Sunspray Ultra-Fine Spray Oil
Neem Oil
Neem 2
Kaligreen
Safer Garden Fungicide
Concern Copper Soap Fungicide
Guardian Angel
Serenade Garden Disease Control OMRI
Safer 3-in1 Garden Spray OMRI
Sulfur Vaporizer
Organocide
SM-90
Malatox
Garden Sulphur
Sulphur Burner
Sodium Bicarbonate
Chi
Mother Nature’s Karanja Oil
Concern Copper Soap Fungicide
I can’t tell if that is lime scale or not. But hard water with a pH of 7.5 is not good on the leaves at all.
For those that like to foliar feed, the whole point is getting the nutrients into the plant kinda faster/stronger, and just like you can burn your roots or leaves with a nutrient that is out of balance or water it with water that has a bad pH and have this cause problems, the water you spray on the leaves can add too many alkali minerals and cause pH problems in this fashion as well as dehydrate the leaves.
I would have to say you should only really mist with distilled or very low near zero ppm water, and it should be between 6.0-7.0 pH.
If you insist on foliar feeding, also keep the nutrient ppm very low and make sure the pH is around 6.0, 5.8 ideally.
I also remember reading the lime will turn to calcium carbonate absorbing CO2 and possibly interfering with some CO2 uptake by the leaves.
Ok thanks, when I said I misted them it was only a few times and it dit not soak the plant, I was mainly trying to cool of the area a bit. It was about 95f that day.
I took a few leaves into town to the local hydro shop and they looked at them and underside of leaves had Thrips. They showed me what the looked like under a scope. Made my skin start itching. Lol so I will spray them tomorrow.
Thanks everyone for your help.
Tom
Tlkbear, can you reach your leaves? I believe powder mildew can sort of rubbed off. My plants looked droopy and I thought I had PM but I had a few different types of pests. But maybe try rubbing it off and if it comes off as a dust or something it is probably PM.
It’s not PM It from thrips, and yes I tried rubbing it of and it won’t. Well that what they told at the hydro shop. I’m going to spray the stuff tomorrow, then dust with DE. thanks for the help
Tom
Get yourself some Diatomaceous Earth workers great and power the he’ll out of your plants and put some on the soil also. You can buy this at Home Depot for 7 bucks
Will
I use Serenade for prevention of PM,and Green Cure if PM is already present.Serenade is only a preventive for PM,it will not eliminate PM.
I used the DE on my plants at the first sign of pests. It’s working great on my little seedlings. Need to give them one more application of the stuff just to make sure.
MT1
Cleared my trips and now ready for harvest Great stuff
Will
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