Some serious browning 7 weeks into flowering, suggestions?

C

cangrowww

Member
Hi everyone, 7 weeks into flowering and I'm getting some serious browning within the last few days. The leaves are drying and browning... is this due to light burn? Light has been the same distance for the past month and this is the first sign of it.... why would it change now?

I'm wondering if it is too wide spread now to cure... Half of my plants are nearly ready for harvest... the other plant was stunted and will take a few more weeks. Any suggestions on what to do? This is a hydro grow...

Here are the pictures.













Thanks all!
 
melungeonman

melungeonman

Active Member
micro and secondary macro-nute deficiecies are common, and cause this appearance in mj close to finishing. If your nearly done I wouldn't add anything. Trichomes past or in the milky white stages yet? harvest beween that stage and the first sighns of amber.
 
mikmike

mikmike

Well-Known Member
do a flush but i think nut burn, because those leafs are so green and in late stage flowering they should slowly change to a yellow meaning the plant is grabbing as much nuts as possible even taking them out the leafs but that is burning, i would flush for 2 weeks and by then your plant should be done, might even be done next week so start flushing
 
TriPurple

TriPurple

Well-Known Member
The buds look starved due to over fertilization ..... flush a couple days go to half strength:peace:
 
goodvibes420

goodvibes420

Active Member
I flush with twice as much water as i feed them with and add Fox Farms Sledge Hammer flush and a Little Grow Big to it. Works beautifully for me
 
CannaChameleon

CannaChameleon

Active Member
Ive had this browning before big time, Im under the impression it helps if you cut the tips off the affected leaves - you can cut quite a substantial amount off and the remaining part of the leaf perks right up without the dead weight. Give it a go, a bit of pruning certainly wont do any harm - id get rid of some of the worse fan laves entirely but obvs theres not all whole lot of difference that can be made this late in the grow. good luck.
 
melungeonman

melungeonman

Active Member
Naa.. Probably P deficiency caused by micro/ secondary macro nutrient deficiency. You are feeding it a P but if it doesn't have the building blocks to utilize what your giving it. This is common with a hydro grows using nutrients that don't contain or contain not enough secondary macros, as well as micro's for your particular strains demands. If using a part a and part b nutrient most companys won't pre- mix this in there solutions. Instead they offer a supplement bottle that some growers don"t order because they asume it's in part a and part b. Even if you purchased the supp pack, a plant that produces large buds like that uses more secondarys than you might think. Most feeding mistakes are caused by lack of mg a secondary macro. The symptoms of mg deficient plants, look like a multitude of burns / deficiencies, over watering, light poisoning bud death etc. And is also the most common deficiency.
And subsequent reason a grower accidently overdoses their plants.
 
C

cangrowww

Member
Wow.. thanks for all of the responses!!! Can't believe it went over a page already, haha... Some good advice here.

I have three plants here... two on the left have some good trichomes and the one started turning cloudy... the plant, my big one on the right has very little trichomes and just hasn't filled out bud-wise at all. I'm a little concerned about harvesting only two of the plants because all the roots are intertwined.

Lastly, should it be just RO'ed water (pH adjusted obviously) for the flush? Would hygrazyme (to help with clearing up bacteria in the water) and Sugar Daddy (carb mix) hurt in the flush? Or should I just go straight up H2O? Wasn't sure about that. Heard it was good for a some extra carbs at the end flush.

Thanks!
 
melungeonman

melungeonman

Active Member
Wish my camera took pictures like that, those are killer sharp man. Nice job with the lens sure makes it easy to look close.
 
C

cangrowww

Member
melungeonman said:
Wish my camera took pictures like that, those are killer sharp man. Nice job with the lens sure makes it easy to look close.
Click to expand...
Haha... thanks man... spent enough on the camera... Cannon 50D with a 28-135mm lens... I'm wanting to buy a macro lens here soon so I can get some better pictures. The lens I have now isn't that great for the close ups but it works!
 
melungeonman

melungeonman

Active Member
If there isn't enough mg stored in the blooming plants roots it can't access the (p). P deciency often manifests itself by showing that yellowing, to browning, burned-up effect . In the subsequent days leading up to flush and harvest you may try this. Give it fresh water through its system, nothing more. Mix 3 or 4( mg ) crystals with 2 quarts of water. Top feed them this as your pump runs fresh water through your roots This will wash the exess mg away, giving the plant the ability to access the p stored in it's roots. Don't give it more you will just overdose it at this point. The plant probably looked good untill just recently. You can tell by the bud production. It did well untill these final stages. It should have plenty of nutes stored in it's roots to finish it. And just can't access them due to lack of secondary macros. When a plant is aleady suffering flushing it, does it little good, your making it suffer more by adding more problems. Flush as a last ditch effort to save a plant. Or to remove chemicals improving flavor at the end of bloom. Not As a cure to solve your mistakes.
Also do this once a day, changing the water daily you don't want to keep adding mg to your res. change it out daily with this top feed technech, you will be running this into your res in very small amounts, allowing the plant to acess it through the day, starting over the next day. Do this for 2 or 3 days. then study the colors in trichomes for harvest indicators. Bummer, about the two in one pot deal live and learn I guess, yes?
 
melungeonman

melungeonman

Active Member
Is there a supplement pack available for your nute selection?
If so, get some and give it a try. You probably will get better results. Remember breeders will grow their plants to meet an IMAGE, Those pretty and multi colored buds you see in the seed sites, are grown as an advertisment. To catch your eye and encorage you to buy those seeds. That image, Is created by pushing the stains limits with some nutes, and starving it for others. This creates all those colors and crazy buds. The nutes to achieve this "image" usually, are listed on the back of the seed pack or on the sight. Growing an "Image" doesn't mean you are getting everything out of the genetics the plant has to offer. Many times you can grow the same plant, with a BALANCED feed program and achieve a completely diffrent result,and often it is more potent weed. In short the nutes used in the picture are used to achieve that advertising image. To get everything out of the plants genetics potency- wise, you must keep all aspects of that plants needs balanced. Get it?
I'm gonna go get me one of those cameras was it decently priced?
 
C

cangrowww

Member
melungeonman said:
Is there a supplement pack available for your nute selection?
If so, get some and give it a try. You probably will get better results. Remember breeders will grow their plants to meet an IMAGE, Those pretty and multi colored buds you see in the seed sites, are grown as an advertisment. To catch your eye and encorage you to buy those seeds. That image, Is created by pushing the stains limits with some nutes, and starving it for others. This creates all those colors and crazy buds. The nutes to achieve this "image" usually, are listed on the back of the seed pack or on the sight. Growing an "Image" doesn't mean you are getting everything out of the genetics the plant has to offer. Many times you can grow the same plant, with a BALANCED feed program and achieve a completely diffrent result,and often it is more potent weed. In short the nutes used in the picture are used to achieve that advertising image. To get everything out of the plants genetics potency- wise, you must keep all aspects of that plants needs balanced. Get it?
I'm gonna go get me one of those cameras was it decently priced?
Click to expand...
The technaflora line has supplements, I've been using them. The camera, I got it on clearance at Bestbuy... was about 1k. It is more than I technically need at this level, but I'm trying to get more into photography (I need more lenses though and those can cost quite a bit) so I paid a little more upfront. The one I got was a floor model and it came with an upgraded lens. I'd recommend a DSLR camera that you can get different lenses for. I know canon has some that are priced around 5-600 that do a great job.
 
C

cangrowww

Member
So when I flush these, I'll be harvesting the two that are close to done very soon... What will that flush do to the final plant that still needs to grow a little bit more... After flushing should I go back to nutes for that one or is the flush going to basically cause me to harvest that one prematurely? Little confused with that. This is my first grow, so I'm learning from my dumb mistakes now and will definitely adjust my game plan for next time, Haha.

Thanks all!
 
You must log in or register to reply here.
Top