Beginning of Week 7 Flowering - noticed White powder on sugar leaf

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Optimus1

Member
Hi All,

I am in week 7 of flowering my first grow and noticed a white Powdery spot on one of the sugar leaves.

Details: Fox farms ocean forest Soil, Fox farms Nitrients, PH 6.1- 6.5, Temp 73-75 degrees day time, 64-69 degrees night time. Humidity ranges from 38-45 degrees. Indoor Grow Tent.

Strain: Magic Melon (7-8 week flowering time)

Any help is greatly appreciated.
 
Optimus1 said:
Hi All,

I am in week 7 of flowering my first grow and noticed a white Powdery spot on one of the sugar leaves.

Details: Fox farms ocean forest Soil, Fox farms Nitrients, PH 6.1- 6.5, Temp 73-75 degrees day time, 64-69 degrees night time. Humidity ranges from 38-45 degrees. Indoor Grow Tent.

Strain: Magic Melon (7-8 week flowering time)

Any help is greatly appreciated.
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It's possible you have White Powdery Mildew. All of your environmental variables sound good. Please post a picture so we can see.
 
Sorry, here are the pics. The initial picture didn’t upload. These are from two locations of the plant
 

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themda said:
that’s the start of PM, be careful on disturbing it while trimming it out, prepare for an early harvest. Too far along to use any types of sprays on the bud, might make the issue worse
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Spinosad can keep pm at bay and in some instances get rid of it.

It also happens to be safe for up until 2 weeks before harvest.
 
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Optimus1 said:
it’s in the night cycle right now will check in the morning
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I think it's PM. Start working on a strategy to cure. PM came to my tent but I didn't know what it was. I lost 5 plants directly. The cures I've used destroyed 6 more plants. I think it's almost under control.
 
themda said:
that’s the start of PM, be careful on disturbing it while trimming it out, prepare for an early harvest. Too far along to use any types of sprays on the bud, might make the issue worse
Click to expand...
Thanks Rmax and everyone. I am suppose to harvest in about 10-14 days. Should I harvest now, and how will that help with the pm. I presume I will have to take additional steps to manage after harvest?
 
Optimus1 said:
Thanks Rmax and everyone. I am suppose to harvest in about 10-14 days. Should I harvest now, and how will that help with the pm. I presume I will have to take additional steps to manage after harvest?
Click to expand...
I mean no don't harvest as of yet. I would remove that leaf and others that have..
 
Increase your airflow/exhaust if you plan on keeping it longer. I’d just clean up the leaves and harvest in the next week before spores start developing deeper. Make sure when you harvest you have good air flow and low humidity to stop growth. Also look into washing your buds with baking soda/lemon juice or hydrogen peroxide, there are multiple tutorials online. If you plan on washing you want to bat down as much of the water with a heavy fan flow direct on the hanging wet buds for the first 10hrs then can continue hang dry like normal
 
Dilute some vinegar and peroxide in a spray bottle and douse your plants where you see the powdery mildew. Trim the affected leaves. Increase air flow. Less watering for a little while. I've read milk diluted in water and sprayed onto the leaves works well, too. I'm having a bit of an issue with the same thing. It's affecting the plants in the back corners, where air flow isn't as good. Gonna have to put in an extra fan, I think. Maybe two of them. Right now I just have one fan in the room.
 
Don’t forget that you will need to deep clean all your equipment after this to make sure it doesn’t come back on your next grow. Had this happen to me once and i sold my equipment cheap on Craigslist and re-ordered new shit.
 
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