I got these spota on the leaves, I think it’s calmag deficiency. But feom the start im foliar spraying them with calmag algae 5g/1.5l spray.
Soil is only NPK 7-3-7 from the start when I was making the mixture with perlite 20% per 80x80x80 hole. I water them 2 times weekly with only rain water. PH is 5,7-5,8.
I think im on the right track, but this leaves are making me nervouse and Im pulling them off so this wont spread on healthy ones, but im worried about photosinthesis in this case.
Overall dark green color of leaves, girls seem really healthy to me, but with this pace I will be out of leaves shortly..
Any good tips on this or just leave it as it goes?
Looks like a touch of mold, but I wouldn’t worry to much about the lower leaves. The plants otherwise look very healthy. It is normal for them to develop problems as a plant ages.
Foliar spraying encourages mold development. The only time a cannabis plant should ever be sprayed with anything is if absolutely necessary to treat bugs or mold.
Thanks, but place is very winds and weather conditions are from 25°c sunny over the day and around 16-18°c over night.. no conditions at all to develope mold, or im not familiar with this kind of it.
I should pull the leaves or just leave them? I usually spray calmag foliar and it worked will now, dose is really small, beneath recommendations.
As @MidwestGuy stated above from the looks of the white dots in pic 2 on the inner leaves ( blocked by the upper leaves ) you have white powdery mildew. Probably from foliar spraying. I mist seedlings to water because they don’t have the root system to pick up enough to water to feed themselves. But after they can pick up water by themselves that stops for fear of mold. I only use foliar as an emergency if I have to kind of thing. Plants look very healthy, I would just mix a lil calmag in my waterings as it is very easily absorbed. No need to foliar spray honestly. Just my 2 cents. Plants look good hope you can get them back on track. Dr.Zymes I think is an anti fungal. Hydrogen peroxide works too!!
Thanks, I know the mildrew is from foliar spraying. Will try to put as well to soil like I used at the beginning, but I still dont know how to solve that down leaves deficiency.
Thats my main concirm I will have to cut down each week some large amount of leaves…
To treat [Septoria leaf spot] on cannabis, focus on removing infected leaves, improving air circulation, and reducing moisture. Fungicides, including copper-based options or neem oil, can be used to control the spread, but are most effective as a preventative measure. Compost tea is also an organic treatment option.
Detailed Treatment Steps:
1.Remove Infected Leaves:
Immediately remove and destroy any leaves showing signs of Septoria leaf spot. This helps to reduce the number of spores that can spread the disease.
2.Improve Air Circulation:
Increase airflow around your plants to reduce humidity and prevent the spread of spores. Prune bushy parts of the plant, space plants further apart, and consider using fans to improve air circulation.
3.Reduce Moisture:
Avoid watering from above and ensure proper drainage to minimize moisture. Septoria thrives in humid conditions, so reducing moisture is crucial.
4.Apply Fungicides:
Copper-based fungicides or Biofungicides: These can be effective in preventing the spread of the fungus, and are best used as a preventative measure.
Neem oil: Can be used as a treatment, but avoid using it on flowering plants as it can affect the taste and smell of the buds.
Compost tea: An organic foliar spray that can help control the disease.
5.Monitor and Maintain:
Regularly inspect plants for signs of infection and take action promptly. Ensure proper hygiene in the grow area by removing any dead leaves or debris.
Important Considerations:
Early Detection: Early detection and action are key to successful treatment.
Prevention: Maintaining a healthy growing environment, including proper air circulation and moisture control, is crucial for preventing Septoria leaf spot.
Flowering Plants: If plants are in the flowering stage, be cautious when using foliar sprays, as they can affect the quality of the buds.
Uh oh…. Be wary of AI. It can be beneficial for some things but also can be wildly off others. Trust the growmies here. Some of the best advice all around.
Thanks guys! Septoria should be the right answer here!!
Not to put some chemicals on the girls with fungicides, can it be something natural like sodium bicarbonate + soap to stick to the leaves or fungicide is more efficient?
Well you don’t have any buds yet so you could use neem oil which is beneficial in more ways than one to cannabis. I would remove any leaf that has damage. Thin out those ladies a lil bit so more air can penetrate the canopy. Do a couple or so treatments as described on the back of the neem oil and see what happens. Also rake under you plants at the base of the stalk clean and maybe add a mulch layer because septoria travels along the ground.
Do not use neem when in flowering because if it gets on your buds it will leave a funky taste. Just saying.
@lojze
nice grow ur sugar leaf has done it’s job,
After ur branch has formed above the sugar leaf, the sugar leaf is just basically robbing much needed energy to the branch ~bud sites plus much sun light to ur plant, they are very tough plants, u can do a trim job on her , but not too much at a time, the spots, looks like maybe weather related issues, heat, cool, rain,
It certainly looks to me like u are doing business CONGRATS ᕙ( ͡◉ ͜ ʖ ͡◉)ᕗ
ur sugar leaf has done it’s job,