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Rust spots on fan leaves

e4rtht0nestarted grow question 6y ago

I have some rust spots appearing on some of the older fan leaves shown in my latest week 9 photo. Any advice on what it might be?

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WILLIAMSII_Fr_Farmanswered grow question 6y ago

Salut l'ami. Je pense à une déficience de calcium. J'ai eu le problème sur ma Quick dinamed CBD, c'est apparu au même stade et avec des taches extrêmement similaires (va voir ma Quick Dinamed, tu seras vite fixé). J'ai fait l'erreur de penser que c'était dû a une déficience de phosphore ce qui à donné le temps a la carence de calcium de se généraliser. Tu devrais faire un ajout de Calmag à son prochain arrosage, sous peine de voir toutes ses feuilles se nécroser de tâches rouille clair puis grisâtre, et ce à grande vitesse. J'espère que ça t'aidera.

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DoDrugs420answered grow question 6y ago

Phosphorous deficiency wich is also causing some Magnesium deficiency. There ya go mate good luck. If phosphorous and some calmag doesnt do the trick then its a fungus called rust, there a lot of organic options to combat this too, if its not the first option just google treatments for rust in cannabis. Its easy. Good luck nice looking plant. Stay lit growmie.

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