Marijuana Leaves Curling Up?

Marijuana Leaves Curling UpMarijuana Leaves Curling Up? Here’s What To Do.

Question: What do I do if the edges of my leaves are all curling up? I’m a first time marijuana grower and just noticed this happening to only two of my plants.

Jay Kitchen and Uncle Tweezy: First I’m going to give you a qualifier—we don’t really have enough information to give a you a specific answer. That’s because we don’t know some of the basics about your grow operation such as how far along your plants are, how many you got, what size containers they’re in and so on. But there are a number of reasons that your leaves could be curing up. So we’ll shoot from the hip and try to help you out, know what I’m saying.

It could be that those two plants might be root-bound, or maybe they could have inferior genetics or the seed could have been kinda icky. We’ve seen a lot of Sour strains that have leaves that just taco-up with really sharp edges. I don’t know if that’s your problem, but then again we don’t know what strains these are.

Marijuana leaves curling up, but no discoloration? You could be over-watering the plants or applying too much nutes. There could also be a mineral imbalance, or calcium imbalance. How close the plants are to the light source could be causing the problem.

Grow guru Ed Rosenthal talks about a lot of the reasons why marijuana leaves curl up and so does Jorge Cervantes—you should check out their stuff if you need more in-depth information. But if the leaves aren’t discolored or dropping off just flush and see what happens after a week or ten days. Since you’re a first time grower you may be over watering those plants a little bit, or adding too much nutes, or they may be root bound. When in doubt, though, flush it out. Flush your plants with plain water and then you can begin again.

And definitely make sure your plants don’t stay in the same container too long because after a while you’re going to start seeing leaf curling and other leaf anomalies. Also be careful if you’re going organic—make sure your products are really organic, not organic-based. A lot of companies claim that their products are organic, but they’re not really organic in the sense that they don’t have chemicals, salts or edta’s.

Keep those questions coming! All of our love from The Kitchen!
Stay lifted,
Jay Kitchen and Uncle Tweezy

To answer all your cultivation questions we’ve teamed-up with experts Jay Kitchen and Uncle Tweezy, authors of The Kitchen presented by Uptowngrowlab—an oversized, hard-covered, coffee table book that’s 50% grow guide, 50% adventure story and 100% awesome.

6 Responses to “Marijuana Leaves Curling Up?”

  1. Amy

    Ok well I have the same question my babys are in the 2 week they still on the 6/18 they are in a 1g and some of they leaves are curling up but they green and look health the no that clouds to the light they like 70″ to 90″

  2. Kat

    Speaking of not keeping them in pots too long… I’m using 5 gallon fabric pots which air prunes roots. Problem is, if I don’t rotate those pots they will dry from one side … I thought it would be so much easier to handle and not being root bound sounded great. At 3 weeks if turning pots 4 times a day I feel the need for a new strain name. OG Dizzy Granny.

    What r your this on air prune?

    Hugs & whirled peas.

  3. Matt

    ,hey dizzy granny
    Fabric pots are amazing! I wouldn’t worry about turning then so much, the outside might dry out but the majority of the moisture stays on the inside of the pot, I have 3gal pots and water every other day, media is peat and perlite supersoil. Air pruning works so nice. These fabric pots must have like double the root mass of a comprable plastic pot!!

  4. Gold country nuggets

    The photo here looks to me like the plant is suffering from either broad mites or root pathogens/rot. If the plant is young I would aim to adress both, although if your plant is drinking regularly and you can see healthy roots when you remove its pot I would focus on treating it for broadmites. Dr zymes or nuke em, green cleaner, pyganic (only if still in early veg. The combusted version of pyrethrin is toxic) venerate and grandevo from marrone bio innovations are all great alternatives to the other highly toxic solutions that yes, work but are intended for ornamental plants and in my opinion are shameful to subject unknowing patients to. Plants sprayed with avid forbid or floramite or judo amingst others are the opposite of medicinal. Please please dont use these products at any stage of your plants’ life, they are translaminar and remain within the plant tissue far longer than the life of the average cannabis plant. When plant scraps ate turnedinto extracts these becomehighly concentrated and toxic

  5. Keep en green

    What is a safe spider mite treatment to give outdoor plants before budding ?

  6. TG.nor cal

    The leaves on my plants are curling up only on the top of plants how do I cure?

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