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Yellowing china doll

Posted by elkay 6a (My Page) on
Sun, May 6, 12 at 11:44

I've only had this plant since last year and just recently it seems to be turning yellowish compared to the dark green it was when I bought it.

It's in a fast draining mix and I am careful not to over water it or let it stand in water in the saucer. I have not fed it over the winter and there are no bugs on it. I had it in a northern facing window, which I thought it liked, but I'm thinking it is not receiving enough light. I just moved it to an eastern facing window. Do you think that's what the problem is? Should I give it some epsom salts next time I water to "green it up"? Or, any other suggestions?

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RE: Yellowing china doll

Mine is outside, in full sun except a couple hours mid-day. When it was cold (and inside,) it was in a south window


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RE: Yellowing china doll

  • Posted by tapla z5b-6a mid-MI (My Page) on
    Sun, May 6, 12 at 16:28

Let's set aside the idea that when a plant has chlorotic foliage, the first thing we need to do is reach for the Epsom salts or Fe (iron) chelate. In a very large % of the cases, the practice is more apt to be limiting than a benefit. If you are using a commercially prepared soil or made your own and used lime when you made it, a Mg deficiency would be extremely unlikely until the plant had been in the same soil for, at a minimum, at least 1 full growth cycle and half of the next. Fe deficiencies due to an actual absence of the element in soils are also rare in containerized plants - more likely would be a pH issue that can easily be resolved and the Fe already IN the soil made available.

Additionally, everyone has the idea that a green plant is automatically healthy. You can make a plant green by adding Fe and sometimes Mg, but you may be masking other symptoms that will go untreated because all is thought well. Also, applying Mg w/o applying Ca can create an antagonistic deficiency of Ca, and excess Mg makes P and K more difficult for the plant to take up. You should have good reason to suspect a deficiency of any single element, and have excluded other possibilities before applying an element or compound aimed at supplying only 1 or 2 nutrients. In most cases, you'll do more harm than good.

If you haven't fertilized all winter and have been flushing the soil when you water, the plant is probably starved for N, and the symptom of chlorosis in older foliage is a tell. It's likely the plant is robbing N from older leaves to satisfy the N needs of new growth, and will eventually shed the old leaves. Also, tight roots cause shedding of older and interior foliage, so your plant might be telling you it wants a repot.

I would eliminate over/under-watering, general nutritional deficiency, and being root bound, before I would make any decision about adding Epsom salts or an iron supplement.

What are you using for fertilizer? last repotted?

Al


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RE: Yellowing china doll

Ok, I DID "pot up" last summer because the plant was top heavy and would dry out very quickly. I only went one size larger. I was using MG, but now have Dyna-Gro to use this growing season.

So you think it needs more N?


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RE: Yellowing china doll

  • Posted by tapla z5b-6a mid-MI (My Page) on
    Sun, May 6, 12 at 20:31

Yes - especially if you were flushing soil regularly when you watered.

Al


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RE: Yellowing china doll

Thanks, Al! And Happy Belated Birthday! Hope it was a good one. :)


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