Why are my leaf tips yellowing?

Can anyone tell me what is going on with my leaf tips, and why they are yellowing?




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That’s called painted nails (nutrient excess) It’s a sign that your nutrients are at the maximum threshold on feeding

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Nothing can be done to make them green again. You’re feeding may need to back down a bit.

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I don’t need to flush or anything? I’m using all organic dry amendments. I just watered today, and this happened.

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Ok so this happened with a top dress then the soluble N was high and burned it. No worries there. There’s not really any flushing with organics. In extreme cases an enzyme flush can be preformed, but you’re not dealing with salts that need to be flushed due to buildup.

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Alright. So it’s really nothing to be worried about? I do have liquid enzymes. I have been top dressing with water soluble dry nutrients that are pretty high in nitrogen for veg. I always have issues with my leaves yellowing super early in flower, and i thought it was due to letting my soil dry out too much, and the nutrients not being broken down, so I figured i’d try top dressing with water soluble dry nutrients to try and combat that.

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You’re probably cutting back on the N to soon. I top off pre transition and again wk1 to fuel the stretch. I don’t back down N till the 5th wk.

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What are you using for dry and soluble amends?

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I’m using Green Rush nutrients.

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Just looked up. So that’s not meant for a top dress. That’s water in and used more like salts since chelated available. Do they have a feeding chart?

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Yeah on their website. I contacted them about how to top dress with them. This is from the site.
Top Dress

As the nutrients are powder based you can also add them as a top dress if you find mixing them in water not 100% to your liking. If you would like to try them as a top dress, simply do the following:

In veg: add 1 teaspoon per gallon of soil once every two weeks. For example, if the plant is in a 3 gallon pot, add 3 teaspoons of nutrient every two weeks.

In Bloom: add 1 teaspoon per gallon of soil once every two weeks. For example, if the plant is in a 3 gallon pot, add 3 teaspoons of nutrient every two weeks.

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That seems high for availability. Most those products run 1 tsp/gal/wk watered in so seems extreme usage for an amend.

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Although I goofed up. I think I reamended my soil with build a soil craft blend, but I wasn’t sure how much I used, so before I planted into my soil, I re amended with 1 tbs of green rush, waited until this past monday and top dressed again with 1 tbs, which was day 24 of veg. Guess I over did it

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Well the craft blend takes a couple weeks to begin availability and then the fast acting nutes kinda hits hard. Theyll pull trough.

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Thanks for the help. I hope it doesn’t get much worse than it is now. I was under the impression using organic dry amendments, the plant takes what it need, when it needs it, that’s why it’s supposed to be so hard to burn them with organics, I guess I was wrong in thinking that.

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Maybe try adding 1/2 tsp veg to 1 tsp flower per gal to drench weekly till stretch over. Then 1/4 tsp veg to 1.5 tsp through wk 4-5 before going to flower only at 2 tsp a wk.

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Yes with instant availability that happens. I used above when running that type. With dry amendments like craft blend, They are a combo of short and intermediate breakdown so nothing to burn the plants. They need microbial intervention to make available.

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I was gonna cut the veg nutrients out completely about a week before I flip, because the bloom still has 6 parts nitrogen to get through stretch?

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That’s why you’ll see the yellowing. They don’t max out N usage till wk 5 before demands start to back off.

Edit: N is tied to Mg P K Ca usage

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That’s what I don’t understand. What’s the difference between using water soluble dry amendments, or using something like craft blend, and letting soil “cook” for a month? By that time, the craft blend is already broken down, and basically water soluble

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