Some of the leaves on my plant are getting these dry tips with sort of yellowish spots. What causes this?

  • BeNotAfraid@lemmy.world
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    29 days ago

    No worries buddy, I usually just lurk but I saw someone suggesting AI and I went ‘nope’. Correct, it all comes down to roots. You have 3 types of meristemic tissue, which are you bread and butter for growth. if you like. It’s where undefined cells are sent to gather and form new structures/tissues. The ground mersitem at the roots, the apical meristem at the nodes and the Procambium which is what creates your phloem and xylem, your transport tissue. Undefined cells are produced at the root meristem and then sent to areas of the plant for growth by chemical messengers called auxins. So, if your pH is out, the plant can’t bind essential nutrients and it looks deficient. If you’re oversaturated with salts/fertiliser it damages the root and diminishes the capacity to produce new undefined cells to send to these areas and again, it looks like it’s deficient. It also changes the priority of where they’re distributed, because now they’re also trying to limit damage that’s occurring at the root bed. You’ll notice that it’s the tips that get consumed first, that’s because leaves are energy stores. So, because it isn’t getting the nutrition from the transport tissue, because of root issues, it depletes those stored in the leaves to try and make up for it. That reduces the ability of the plant to photosynthesise, reduces the binding of carbon from Co2 using RuBisCo, which lowers the rate of cellular respiration, damages the ability of the plant to utilise nutrients from the feed and further slows growth. So, it’s like a knock-on effect.

      • BeNotAfraid@lemmy.world
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        29 days ago

        There’s a University text book you can get really cheap second hand called “Plant Propagation and Practices.” If you read through the sections on the structure of flowering plants, herbaceous plants and olericulture, You will know more about cannabis cultivation than any youtuber, influencer, or cannabis themed company around. The internet is not a good resource, because most of the information is put out by seed companies, nutrient companies and purveyors of cheap grow lights. It’s not all awful, but the fact is they don’t exist to ensure that your plants are great and you produce lots of cannabis with very little effort. They exist to sell you their below commercial quality equipment, at an insane markup, when you can get identical, or better equipment from Alibaba. Advanced Nutrients has made an absolute killing splitting up N-P-K over and over again and selling it back to you at 300% mark up. The mermaid with the big tits on the bottle, isn’t for the plant, it’s for you!

        • Kühlschrank@lemmy.worldOP
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          29 days ago

          You know I just might order that. I’m so tired of the pitch and all the SEO garbage and that’s before the AI slop started to take over. Makes learning about something such a hassle.

          Is this the one?

          • BeNotAfraid@lemmy.world
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            29 days ago

            https://archive.org/details/PlantPropagationPrinciplesAndPacticesByHartmannAndKesters8thEdition

            Probably close enough. This is the guy I used in college though. Anything from 5th edition up and you should be golden. Biology doesn’t really change that much, Universities just like to recharge you for the same information. I completely agree with you on the AI slop. I use a flip phone and a library card. Any dumb-dumb can get ChatGPT to create an article online to sell you something. University text books are dense and boring and the only place I would look if I wanted to learn a completely new skill. Good luck with the babies bro!