Leaves turning black outdoors

you can get all 3 of those guanos online or local. nearly all grow shops carry them, its sunleaves brand.

ive never seen the GSC cut that goes black and i've seen the real GSC from the cookie crew. the only strain i know of that has so called black tendencies is 'the black' or black domina (spelling?)..

those plants look good, but i dont think eveveryone achieves those colors naturally with those strains. not sure what causes those particular ones to be of that shade. i thought the black in strains was a blueberry hybrid that just goes really really dark blue. i think plants that purple naturally are genetically predisposed to have trouble taking up nitrogen later in flower which causes the purple of buds. maybe so called black strains are the opposite? in my opinion the pictures you posted look like they are nitrogen toxic because they fit the description.. but granted the buds do look fantastic. great bag appeal. if its not broke dont fix it.

Uncle Ben said:

Don't mean to be rude, but do you have ANY gardening experience? It's like "where do I start?"

Also, you can't expect much helpful advice unless I know EXACTLY your day to day activities. How much food, how often, what's up with the bloom foods? Why are you adjusting the water's pH and using RO water? Cause some dork recommended it at RIU? Pot size is too big. See my Plant Moisture Stress ditty in the Plant Problems forum and buy Mel Frank's Guide.

Poisons? So what insect pests have you identified? Or you just throwing stuff at them hoping something sticks?

argggggggghhhhhhhh........

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They're coming to take me away, Ha-ha
They're coming to take me away, Ho-ho
Hee-hee-haa-haa
To the funny farm
Where life is beautiful all the time

Still don't have a clue about whether normal plants or auto plants would be better off in an area where the sun is alway hot and always means 365 days a year. That wasn't the question though was it. What is better off in an area where the sun is alway hot 365 days a year - normal plant or auto plant? SPF-50 hot.

RIPE said:

I have what I think are three strains growing, five females and two males. They have been in 12/12 in very sunny and hot conditions so they are stunted in height (blue card state). They never really had a proper veg period. All plants have the same condition with some black starting on the edges and tip. The top leaves are green except one female and something has turned part of the top bud black. There is a cat that does its number in the pots but I really can't control that. I am using five gallon pots and I think three of the plants are pure sativa. I started them in ProGrow (peatmoss) and then added some Foxfarm soil when I did the transplant. I feed them Dyna-Gro liquid 7-9-5 and have been adding a little Beasty Bloomz 0-50-30 in RO water. I ph the water before I add it. How am I going to win the blue ribbon at the State Fair (If I don't end up in the State Pen first!). I'll post pictures if you want. Its too late to spray with poison. Thanks in advance for any ideas.

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(PROCEED TO MY LAST POST AND SAVE YOUR EYES)

Next time you grow outdoors, plant directly in the soil. The plant will give you way less problems. Make sure you amend the soil first. Mix some compost and blood meal into the top soil. Water when the plant starts to wilt. Refrain from using liquid fertilizers until you get a few grows under your belt. Liquid fertilizers are tricky, because every plant has its preferred dosage.

To prevent your plants from sun burning, build a simple hoophouse frame with some cheap pvc pipes. Buy a shade cloth, throw it over the pvc frame, and tie it down.

Follow these suggestions, and I bet you get 1-3 pounds of a single plant.... if your working with decent genetics.

Farmer's Hat said:

Next time you grow outdoors, plant directly in the soil. The plant will give you way less problems. Make sure you amend the soil first. Mix some compost and blood meal into the top soil. Water when the plant starts to wilt. Refrain from using liquid fertilizers until you get a few grows under your belt. Liquid fertilizers are tricky, because every plant has its preferred dosage.

To prevent your plants from sun burning, build a simple hoophouse frame with some cheap pvc pipes. Buy a shade cloth, throw it over the pvc frame, and tie it down.

Follow these suggestions, and I bet you get 1-3 pounds of a single plant.... if your working with decent genetics.

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Thanks for the idea. The sun can help or hurt your plants. I'll take your advice.

sidewing said:

you can get all 3 of those guanos online or local. nearly all grow shops carry them, its sunleaves brand.

ive never seen the GSC cut that goes black and i've seen the real GSC from the cookie crew. the only strain i know of that has so called black tendencies is 'the black' or black domina (spelling?)..

those plants look good, but i dont think eveveryone achieves those colors naturally with those strains. not sure what causes those particular ones to be of that shade. i thought the black in strains was a blueberry hybrid that just goes really really dark blue. i think plants that purple naturally are genetically predisposed to have trouble taking up nitrogen later in flower which causes the purple of buds. maybe so called black strains are the opposite? in my opinion the pictures you posted look like they are nitrogen toxic because they fit the description.. but granted the buds do look fantastic. great bag appeal. if its not broke dont fix it.

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This is what I found online about why it changes colour. Kinda interesting
http://sensiseeds.com/en/blog/what-makes-cannabis-purple/?utm_source=rss&utm_medium=rss&utm_campaign=what-makes-cannabis-purple

And RIPE this is a good gunao kit to buy I just got it and im making guano teas.

http://www.ebay.com/itm/Sunleaves-Bat-Guano-Small-Kit-Mexican-All-Purpose-Jamaican-Indonesian-/261456089741?pt=US_Hydroponics&hash=item3cdfff528d

RIPE said:

Uncle Ben, I take out a gallon or two. They are dry now but the humidity here is high and the soil always seems damp. These are tall pots and maybe the bottom is dry. I NEVER see water run out the bottom.

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That's what I thought or suspected shall we say. When you water, water until there is good runoff. Again, you need to get a book on container plant culture. Get off RIU and spend your time digesting this - http://forums2.gardenweb.com/forums/load/contain/msg0316064615891.html?14

Catch 22 - there is not enough of a root mass to wick off excess soil moisture. If they were mine, I'd start over with new plants AFTER you read up on basic plant culture. If that's not an option, then pop out the plants, make an assessment of the root system (which is probably the pits) and go from there. Repot them into a 2 gallon pot and sink them all the way to the first leafset. Reveg by using a high N food and increase the photoperiod even it that means flipping on an outdoor light for another 5 hours or so each day. When they look like they recovered, become established reflected by good growth and vigor, flower.

its touch and go with the landlord and roomate. They are very dry today. Would this be a good day to soak them in plain water?

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Sounds like it's not meant to be. If you're going to grow pot, or a tomato, or a cuke, then do it right or don't do it at all.

If the soil is allowed to over dry then it becomes hygroscopic - it will shed water as opposed to holding it especially with peat mixes. I'd water from the bottom up by setting them in a tub and adding water to the outside of the pot until it's just below the top of the pot and let it set there for 10 minutes to restore the soil's water holding capacity. When you see water rising within the soil mixture just below the pot's lip, stop adding water and let them sit there for a while.

If the plants are acclimated to full sun, DO NOT give them any shade now.

Good luck

BTW, when I said "you're throwing everything at them hoping something sticks" I did not mean that literally except in the case of the insecticide. I meant by giving them this and that you are doing more harm than good. When you give them blood meal, guano, plant food, do you know the actual NPK needs of the plants, the plants' requirements? No you don't. You're throwing stuff at them. Those plants have very little biomass and no vigor. That means when you give them something they don't need it only sets them back more.

Less is more,
UB