Thank you for the tips this is my first time posting I grow in soil the temperature is never really the same because I grow outside usually between 26 to 28 but there was a heat wave a few days ago when when it got to about 32 as I said before I grow outside I don’t really have a watering schedule I water about every 2 to 3 days depending on how dry the soil is but there are also water crystals in the soil mix I have been watering it more since it has been sick I have heard it’s bad but I did most of my research after making the soil I use controlled release tomato fertiliser balls and that’s about it and this is the only pic I have atm this was before it got worse about 2 days after the heat waveThey are going to want to know;
Type of grow medium.
RH & Temperature.
Indoor or outdoor.
Type & size of light.
Watering schedule.
List of nutrients.
Air flow/HVAC.
Show a pic of the grow room/tent area. A pic of the entire plant top down. I think you have enough from the side.
Looks like you grow in the bathroom or just took pics in the tub area.
Not the best at diagnosis myself but looks hungry & over watered maybe.
Experienced members will be along shortly.
17-2-7 it’s meant to be a tomato fertiliser where I live it’s very hard to get weed designed fertiliserI’m guessing heat/light stress from the heatwave followed by to much watering.
What’s the NPK of the fertilizer balls?
If you lift the pot does it feel heavy with water? Is the soil damp or most? How far down does your finger go in the soil before getting damp?
One of the staff or more experienced members will be better able to diagnose.
Don’t worry, I’m sure it will be fine.
Yes I’ve been letting it dry out since then but it still looks very badYour plant looks overwatered. Stick your finger in the soil between the soil and the plastic container and feel if it's wet. If its wet that's the problem, don't water it until the top inch or two dries well. Also, don't try to fertilize until it recovers a little more. Be patient for now and let's see what happens in the next few days. ,
There have been heaps of bugs on the underside because it’s grown out side but every time I find them I get them all off and I thought it could be a ph issue so I’ve ordered a ph tester I’m now just waitinglooks like things are getting too hot, the leaves are going to go dry and brittle. check underneath on the main veins there could be some insect damage, think of the veins as the water supply, some bugs will get in and tap those veins for the water and it cuts the supply to the rest of the leaf from that point, you will notice little marks right as the leaf dies. But yeah id say its either bugs causing things to dry too fast or too hot/ much light for the plant to keep up with the internal water pressure, the bottom picture is showing signs of the PH maybe being a bit out, but that could be burn from heat all the same
I would flush through some water next time you feed so you have some trickle out the bottom, test that for a big PH swing from what it went in at, if you aren't having heat problems or bugs then its likely you maybe went too acidic or basic in your root zone, hold your hand where the plant is, if you can feel the heat of your light at all you are too close (in my experience) could be your light being too close to the top of the plant, but i doubt its that simple
some resources
Cannabis pH Management - How to adjust pH in Water and Soil
Brown spots appearing on your lower leaves? See what cannabis leaves look like as a result of pH fluctuations and learn the solution!www.growweedeasy.com How to Prevent & Treat Heat Stressed Cannabis Plants
Too hot for your cannabis in the grow room? Learn how to save your plants from heat stress with a variety of techniques as well as certain supplements!www.growweedeasy.com
17 seems high. Most I’ve used are 8, 6, or 4. Like 6-4-4, 4-4-4.17-2-7 it’s meant to be a tomato fertiliser where I live it’s very hard to get weed designed fertiliser
Obiwancanabi has some good advice.Yes I thought that myself but I just heard tomato fertiliser was the closest I could get
Thank you for the tips I’ll try to get better nutrition only problem here is the limit on phosphorus in nutrients17-2-7 is way out of balance for weed (I aim for a 1:3:2 ratio throughout my grow adding some nitrogen to the ones in veg) so my NPK values using that stuff would want to be 17-51-34, especially during flower, and then id use it very sparingly. The number is how much in weight per x it contains, so that stuff has very little in the way of phosphor or potassium. You could supplement it, see if you can get some PK 13/14 and maybe a mix for trace elements. I would import some salts if you have to, Potassium sulphate and ammonium dihydrogen Phosphpate, I got some food grade stuff kicking about, was easy enough to order online
Be careful with it the nitrates do most of the damage when things are in high enough levels to be toxic, when you have too much phosphor or potassium it generally blocks absorption of itself, so you will get a deficiency, but nitrogen burns where the water evaporates, think of it like an engine, if your fuel mix is too rich your exhaust backfires as excess fuel is burnt elsewhere, the plants leaf tips are where the plants water vapors collect, nitrates will kill the cells and you will see brown on the tip of the top leaves. Generally when I see brown tips i know im pushing too much light for the condition in the roots (too much nitrogen), the harder you push the more it will sweat and more of the leaf will go brown and die, so take the burn as a warning if you see it. If your leaf tips lighten slightly its a sign they are drinking back their own moisture, if there is no burn that is a general sign you are pushing them nice and hard with things nicely balanced on nitrates at least
When its hot like that 32c you want to be careful, you can't really control the overall VPD of the plant but you can do things to aid it. VPD charts will want it humid, like 60%+, they will help you keep out of trouble if you take the time to understand its relationship to the plant
VPD is an indicator on how easily the plant wants to dump its moisture at the leaves, while its working in a well lit environment. The dumping of the water lets more water come up the plant, the warmer it is the less viscous water acts in the veins, the lower the humidity the easier the water exits the plant, Your plant makes and spends sugars to drink via the light hitting the leaves, all of this works as a balance
If you can't control the temperature or humidity you can move the plant to a more shaded spot, as long as there is light enough for it to work it will be happy to just chill out on those stressful days, There is a point where you can have too much water and nutrients flowing inside the plant. It is a pumpless system so the bigger your deltas the more free work you get (higher temperatures and lower humidity = free energy for your plant), in theory you dont need the plant to be in such a well lit area as the water wants to come in and out of the plant easier, if it can save 50% energy in drinking it could live and do good things with say 30% less light, it doesn't need to make the sugars to drink to get all those nutrients it needs, it gets given them almost for free. If you can spray the area around the plant you can raise the humidity in that area, as the water evaporates it will cool the area down and add moisture to the air, helping the plant cope, Try not to push it to do hard work when its up like that, too much work and the leaf can't get enough water to keep up and it will just die. You would be sweating your ass off if you was to do your daily work in the sun, imagine if your eyes were burning with nitrogen, it seems like a good idea until you try it for yourself, plants are no different except they can't move, you wanna be kind give them a break when its a beast of a day ;)
Not really on short notice I’ll have to order some soon the ph tester is coming today so I’ll try thatObiwancanabi has some good advice.
Can you get anything else to use as fertilizer to balance things out?
How long was it outside. Was it put out recently or started outside?Yes well now that I think about it it started getting bad on the heat wave i putt it out in the direct sunlight when it was cool and came out about an hour or 2 later it was still in the direct sunlight and all of the leaves were dropping but to top ones kind of pointed straight up and folded in on them self and some of the leaves had also turned upside down it just happened really sudden and here’s a pic of it before the heat wave it’s actually to separate plants in the same bucket btwView attachment 1331508
It has been grown outside since it was a seedlingHow long was it outside. Was it put out recently or started outside?
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