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Thread: Brown rusty spots on leaves, HELP!

  1. #1

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    Default Brown rusty spots on leaves, HELP!

    Hi all, the past couple of days I've noticed brown rusty spots appearing on my leaves! What is this, is it anything serious? I'm absolutely shitting myself.

    I'm in soil, just started flowering, 12/12

    no nutrients used as of yet, nutrients from the soil only, been potting up.

    What could this be I'm really scared !

    At the moment it's only on 3 leaves on 2 plants, but I don't know what it is or what to do. Anyone recon they have an idea?

    Thanks in advance guys <3 xxxxx

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    If it's on your rooted cuttings are you sure it's not the old leaves dying?

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    How old are your plants ANONYMOUS, my superskunk got rusty patches 3 weeks into veg , 2 weeks later and they are now back to normal.. I put it down to not leaving my water out over night but really i havnt a clue lol... Used the same soil ect n everything so its a mystery to me...

    Is it isolated to a few places or is it spreading ???
    Last edited by 91181; 27-11-10 at 07:23 PM.

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    Magnesium (Mg) Deficiency

    Magnesium deficiency is common indoors. Lower and later middle leaves develop yellow patches between darker green veins and rusty brown spots on leaf margins, tips and between veins. Leaf tips usually curl upward before dying. The entire plant could discolor in a few weeks and if severe, turn a yellow / whitish tinge before browning and dying. Minor deficiencies can escalate and cause a diminished harvest.

    It is often in soil but unavailable because soil is too wet / cold or acidic / cold. And excess of K, ammonia (nitrogen) and calcium (carbonate) bind Mg in soil. Small root systems are unable to take in enough Mg to supply heavy demand. A high EC slows water evaporation and diminishes Mg availability.

    •Inter-veinal yellowing, irregular rust-brown spots on older leaves
    •Leaf tips turn brown and curl upwards
    •Rust-brown spots multiply and inter-veinal yellowing increases
    •Spots and yellowing envelop entire plant
    •Leaves dry and die in extreme cases

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    Quote Originally Posted by Naxx View Post
    a picture paints a thousand words
    Yes mate we want to help but it could be a number of things we really need a pic to be sure.
    “The farther back you can look, the farther forward you are likely to see.”

    Winston Churchill

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    [QUOTE=ANONYMOUS;1068598366]Hi all, the past couple of days I've noticed brown rusty spots appearing on my leaves! What is this, is it anything serious? I'm absolutely shitting myself.

    I'm in soil, just started flowering, 12/12

    no nutrients used as of yet, nutrients from the soil only, been potting up.

    What could this be I'm really scared !

    At the moment it's only on 3 leaves on 2 plants, but I don't know what it is or what to do. Anyone recon they have an idea?

    Thanks in advance guys

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    Hi guys, it seems pretty isolated at the moment.

    These aren't my cutting plants, these are my mothers they're about 3-4 days into flowering and they have appeared gradually, they seem to be spreading too not sure :s

    I hope it aint some sort of pest or bug or something,

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    Could this be a nutrient difficency or something? I am only 4 days into flowering and haven't used any nutrients yet, my only nutrients I used was the soil through potting up. Anyone got any advice on what nutes I should get for my plants and for this flowering stage? Thanks in advance guys.

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    have you tried asking in the Cannabis Infirmary? its kinda what its there for

  11. The Following User Says Thank You to Rafiki For This Useful Post:

    TIKTOK (27-11-10)

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