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Peak81 started grow question 4 years ago
The plant on the second picture has some yellow edged leaves. Anybody an idea what that can be?
Week 13
Leaves. Edges burnt
mad_scientist answered grow question 4 years ago
Hello @Peak81 ! From the fourth photo at week 14 i can spot several deficiencies. I can see potassium, nitrogen and zinc. Because of luck of information i will assume that you use a basic soil and you give no nutrients. So that's the number 1 reason that makes me think that you have deficiencies because the nutrients are not inside your soil. The number 2 reason is that if you don't give any liquid nutrients especially synthetic you can't mess with ph, salt build up and stuff like that. The number 3 reason is that if it was a ph problem you shouldn't have signs of nitrogen, potassium and zinc deficiency together. Nitrogen and potassium locks at low PH but zinc becomes more available. So if your PH was high you should have zinc deficiency and not nitrogen and potassium and if it was low you should have nitrogen and potassium deficiency and not zinc. Also zinc is number one micro nutrient deficiency for home made soils and i just saw at the comments below that you made your own soil. You should has put some amendments in it. Soil with just compost can't raise properly a cannabis plant. It will grow but it will not give its best. So my recommendation is to start using nutrients in order to fix it fast. If you don't want to use bottle nutrients ( i think you should use them until the problem is fixed ) you can make compost teas with guano,kelp meal, potassium sulfate (all organic) and other immediate absorption stuff. For the long term top dress your soil with amendments and cover them with some quality compost in order to be broken down by microbes and be available for your plant. Next time put some amendments from the beginning... Happy growing :facepunch:
OutForReal answered grow question 4 years ago
Hi bro ! First check you PH ! If your Ph is not in the good range your plants could have some assimilation problems : between 5.5 and 6.5 in soil but mostly 6.0/6.5 in flowering. The wrong Ph can lead to a deficience or an excess of N P OR K or even others micro nuts. So my advice is to check the ph , correct it betwen 6.0 and 6.5 and add a bit of Cal Mag to helps her !! Hope it will help you bro :grinning::facepunch:
Silky_smooth answered grow question 4 years ago
I think it A magnesium deficiancy the older leafs start to yellow up around the veins
If the ph at the roots is to low youre roots cannot subtract magnesium and other nutrients from youre soil or hydro Some ph up might do the trick :wink:
Mrs_Larimar answered grow question 4 years ago
Hi, Composana universalerde, got Guano!!! and this is a very hard stuff for weedplants. your girl have an excellent nutrient burn, i would recommnd to buy another soil without ,or only light fertiliser. oder ums in deutsch zu sagen deine erde hat guanoals dünger drin, das ist ziemlich harter stoff für dein mädchen. ich würde sie austopfen und ihr andere erde geben z.b anzuchterde die ist nur leicht vorgedüngt und hat einen guten PH wert. Die erde ist immer der schlüssel zu einem erfolgreichen grow. happy growing und alles gute
Experimentgreen answered grow question 4 years ago
Maybe I'm crazy, but being an outdoor grow, sometimes the typical issues with indoor and potted plants is different, ph etc. But at first glance this looks incredible like leaf septoria. The bright white/ yellow spotting. What's your temps and humidity? Because it will usually appear in a warm and moist environment. If so, youd want to remove the affected areas, and then treat the plant with either some neem oil spray or a broad spectrum spray. Best of luck, search the septoria and see if it fits. :green_heart::v:
Removed answered grow question 4 years ago
It is most likely pH related, either the water you are using is too alkaline (high pH), quite common with tap water or your soil pH is off, which is common too with home made soil. Next watering, pH your water to 6.5 or close to it.
Stick answered grow question 4 years ago
Hi @Peak81! My guess is that you're having a salts buildup in your soil. This might be due to : 1) wrong pH range, if you did not check the pH of your waterings or applied a wrong pH range. 2) Too much nutrients in your soil mix / compost. In this situation I would remove the most affected leaves, flush the soil for at least 10 days with only pH'd water (6.0~6.2) and see how the plant reacts. If you think your waterings pH and EC levels were correct for the last weeks, then you should investigate on roots related problems, such as root rot, your custom soil mix might rotten around the roots. Keep us up-to-date, I'm curious to see how this goes. Happy growing :facepunch:
MUDBUG answered grow question 4 years ago
Your ph is off on that plant this starts at your roots this is a mag problem from your ph jumping u must calibrate at least one are twice a month i would get b vitiams and get the ph fixed fast cut those leaves in half where the yellow stops this will tell u if u fixed the problem within 72 hrs:+1::+1::+1::+1:
DudeGrowsWeed answered grow question 4 years ago
Burnt leaf tips typically indicate nutrient burn. I'd recommend backing off on your nutrients with that girl. Maybe go down to 1/2 or 3/4 of the recommended strength. The damaged leaves will not get any better, but should not get any worse and you should stop seeing any new leaves affected. Good luck! :+1: