HELP!! I have rusted leefs which look dead all over my tops!

Personally I would leave the leaves.


If the plant doesn't want them it will shed them on its own.


Yes go back to feeding them but alternate feeding with plain water.


So feed when they need it and then the next time after just use plain water.



J

Ok cheers j, how often do you flush them because I water the with nutrients 3 times then flush once? Also cos I only have around 3 weeks to go would you say feed for a week then flush all way till end with just ph water? Thanks ben

Well since you don't have a lot of plants you should cut off all the dead stuff from the plant because it will begin to develop mold spores and spread to you buds. Don't cut off the entire leaves, just the parts that are brown and dead, the rest of the leaf is good and the plant will get more light and more air circulation as well as not have mold spores growing inches from your buds.

NietzscheKeen said:

Which pH monitor do you recommend? Looking for something that is easy to calibrate, etc.

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I use an Oakton 30, a gift from a beloved friend. I love it and highly recommend it.

Murphyb said:

Ok cheers j, how often do you flush them because I water the with nutrients 3 times then flush once? Also cos I only have around 3 weeks to go would you say feed for a week then flush all way till end with just ph water? Thanks ben

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I would still remain with my advice.

Feed once then use plain water for the next time then feed again then plain water.


Personally I don't ever flush!


But that's me.




J

Here is a picture of a Ca/Mg deficiency off one of my grows awhile back. This is pretty far along. Usually the rust spots are smaller and more punctate. That is how it started out but by the time I got around to supplementing.... it looked more like this.


Leaves bending up with brown are more nute burn.... Here again from my own grow (again awhile back).

Anyway this ^^^^^^^ is why I think you have nute burn. Mine were further along in senescence than yours but still nute burn.....



Here's what I just finished harvesting and are about 8 weeks into cure now mmmmmmmmm

That is defenatly what I had, and then the heat has maybe made them develop even more brownness from drying them out? So when I put the cal mag in, that was correct thing to do? Do you think they will be alright now? Should I stop flushing with cal mag in and put nitriants back in?
Thanks b
Oh and maybe trim back till they green?

my leaves looked alot like yours. mine was caused by bonemeal. organic. even the outside plants suffered from it. i think its ok, it did not progress much, but i tossed the bonemeal in the garbage.

Sorry what is bonemeal? How did your plants turn out?

Murphyb said:

That is defenatly what I had, and then the heat has maybe made them develop even more brownness from drying them out? So when I put the cal mag in, that was correct thing to do? Do you think they will be alright now? Should I stop flushing with cal mag in and put nitriants back in?
Thanks b
Oh and maybe trim back till they green?

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I don't know how you put the cal/mag in as you say? Did you water it in and what did you use and what strength? I use Botanicare's Ca/Mg because it has Fe and I'm on city water. I use 2cc/gallon. I also mix my nutrients at 1/4 the recommended strength.

I use Dyna Gro Foliage Pro(veg nutrient), ProTekt (silicone additive), Ca/Mg and Advanced Nutrients pH Down. In Bloom I merely swap out Bloom for Foliage Pro in the third week of flower so I don't get out of control stretch.

Oh and when I see burn like that or N toxicity (yeah I have a pic of that out of my room too), I go to clear water with only cal/mag until I see green top growth. Oh and I NEVER flush.
hth,
Annie

I agree with cal mag issues. However before I start pouring nutes to adjust. I look for pest gnats tricked me into thinking I had some type of nute problem before.

You starved your plants of the most vital nutrient during the time it needs it most. Nitrogen. You raised you P-K for no scientific reason, just stoner advice Im sure. When you starve your plants of N you will see a lot of problems. Heat stress will be harder for your plant to manage along with nutrient lock outs. Your plants are under stress and eating themselves alive. http://www.adonline.id.au/flowers/the-potassium-myth/

Anyone suggesting mag lock, potash def, or especially PH knows nothing about growing weed. You are listening to Parrots chirping the Jorges guide to not growing anything but power bills. Read up on plant science not marijuana science. And if you listen to half these posts it will be a wonder if there is any buds or leafs left

I'm new to this game, first time. What do you feel is the best thing to do next? Where do you feel I'm going wrong from the earlier posts? Cheers