Happy to help. Made me feel better about what happened to me being able to share what I learned with you. Not a common problem what we had going on.
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Self quote for context, please don’t shoot me 
[quote=“Mithridate, post:8, topic:89320”]
I have seen these purple blotches before. It appeared on freshy transplanted 2 weeks old seedlings
[/quote]
Skunk f2 has done it again, this is what I meant
3 weeks old from seed…
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Bump!
Plants from one guerilla patch ALL show purple blotches.
Easily solved 
Thank you again @Upstate and friends.
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I logged on after a month because my plants as well are purpling and I forgot the cure lol !
Funny how this topic showed up third on the list !
Deff putting the plant into action .
Last week I applied the hydrated lime…last year I also used cavern cultures from fox farm … going to maybe try a calcium foliar spray derived from duck and chicken egg shells
Purple blotches
"Phosphorus Lockout due to calcium deficiency "
Page 20 the knowledge begins …
Deff shout out to @Upstate
Hope all is well brother!!
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You having an issues with septoria ?
@Rabeats2093
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Negative as thread states purple blotches lol
Spetoria is more of yellow brown spots spread through the plant !
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I was just curious if your area was getting hit with it. Purple splotches last year septoria this year
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Question have you been watering the whole plant or just the soil …in the green houses its occurring?or outside …we have gotten alot of rain for July but the sun has made its presence well known still some unhappy plants
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The greenhouse is empty. We’ve gotten so much rain that I haven’t had to water the field. The sun has been pretty much hidden for us. Sunday and the next 4 days is the best sun I have seen 
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This is awesome. Thanks!
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How do you overcome phosphorus lockout due to cold temperatures? I’m on the east coeat near DC.
I fought with the cold weather least year. Greatly impacted my grow.
I have seen plants get defiencies due to cold weather because the plant cannot uptake the nutrients in the soil. But this is usually temporary and clears up once it warms back up.
Usually phosphorus deficiency is due to other things such as improper PH or a lack of proper nutrient in their blooming phase.
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Good to know! Thanks a lot for the information! I threw some bone meal around the base of each plant today. I really hope I can avoid the same problem this year.
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Your best bet in cold regions is to do some research and find strains that can tolerate colder climates. There are several strains to choose from including autoflowering varieties.
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Thick mulch. 3 or 4 inches., seedling heat mat, hot (black or dark )rocks from daytime sun. Water bladder, hoop house.
Are you in pots or in ground?
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These are in the ground. I tilled the soil about 6 times year over year. I’ve treatedd it with hydrogen peroxide. I mixed soil conditioner, blood and bone meal in the soil. I’ve been adding good fungus and microbs. I added trichoderms, root riot, EM-1. Feed with Fox Farm. Have a few inches of mulch, hopefully within splash dsitance from the ground.
Obligatory tag on each plant. Makes it fully legal.
These strains:
2 x Bubblegum from Serious Seeds
1 x Blue Dream from Nirvana
1 x Super Skunk from Nirvana
For perspective, first image is from the door you see level with the ground.
Trying to learn to have a fully seccessful grow year.
Thanks for letting me jump in here.
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I haven’t heard of that one. Why did you add it?
Looks like a good set up. It comes down to genetics in the end. Looks like you’ll have a nice harvest if everything pans out.
Tip about mulch. If it’s cold but sunny I remove the mulch during the day sometimes to heat up the soil, then put it back for nighttime. An electric blanket could work in a pinch. Good luck!"
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Hydrogen peroxide kills all fungus, molds, and Microbs, basically anyhthing bad for a plant like septoria.
The propblem is that it also kills good spores as well. Which is the main thing that brought to trerst the area with macros and such.
I really appreciate all the advice. I’ll be happy to provided an update at harvest time. I also picked up the book the book you recommended!. It looks like a great book! I can’t wait to dive into it!
I happen to take the Subway train to work. I’ll be reading that book on my commute. I couldn’t put it down since I got it! Much appreciate!
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I’m thinking jumping spiders they are famous for bud rot
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Love it! I did a little research on strains for New England (im not there buyt I am in a cloder region).
I chose Nirvana seeds for my strains. The funnny thing is the strains were all similar in their ability to handle cold weather.
I went with Blue Dream and Super SKunk, both Nirvana seeds.
I went with Bubblegum because it is hands down the best weed I’ve ever smoked or grown. It’s just an incredible strain.
Highly recommended.
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