Graphic Designer needs ADVICE Please.

From: Jill Bell godjillab at home.com> on 2001.12.16 at 00:43:15(7918) Hi all, I know that some of you will be able to help me with this problem, I would like to fix it before it gets worse. I will describe the best I can: Some of my larger leafed plants, like some species of Anthurium in particular, are getting chlorosis. (I don't know the correct spelling for this, I hope it is not too far off). It is occurring in the new growth, not stealing from the old growth which makes me think that it is not nitrogen chlorosis. Perhaps iron chlorosis? Whatever it is, I use soiless mix and I think that my plants WANT something that I am not providing. Please tell me what product to use and where can I get it, etc. I currently fertilize with Peters 20-20-20 at half strength appx. once a month and use Super Thrive in the fertilizer solution. I am not scientific unfortunately, or I would understand what was going on better than I do, but I try to be a good plant Mom. Please help me be a better parent. Thanks all, -- Jill Bell +More Illustration, Graphic Design, Web Design

From: "Derek Burch" derek at horticulturist.com> on 2001.12.16 at 04:24:50(7921) Jill, stealing from the old leaves means one of the mobile elements. The very most likely is magnesium, with potassium a close second. Magnesium tends to show as yellowing around the edge of the leaf, often leaving a normal green center in an inverted V shape. Potassium is less uniform in its effects - it may be a yellowing, may be an orange cast, or may be speckling of the older leaves as the element is moved to meet the needs of new foliage. The easiest source of magnesium to obtain and to apply is epsom salts, magnesium sulphate. You can water with a solution or sprinkle it on the soil. It is hard to overdose, but to be sure not to cause an imbalance with potassium, try to find a source of potassium to give at the same time. Potassium nitrate is a great material which gives a little bit of nitrogen to the leaves and also lots of potassium to meet the need for that. Unfortunately, potassium nitrate is a prime bomb-making materail, so take some good i.d. with you when you shop for it. Don't cut off the yellowing leaves until you can't stand them any more. The plant will be taking some materials from them, as well as using the supplements that you are supplying. Good luck with stopping this yellowing. Don't look for the old leaves to green up necessarily, but expect the new ones to stay green. Derek

From: Jill Bell godjillab at home.com> on 2001.12.16 at 22:11:37(7926) Hi Derek, The interesting thing is they are NOT stealing from the old leaves. It is the new growth which is effected, I put the images on my website so you can look if you would like. I am sure that I need magnesium because I have never known that aroids had such a need for it before, so I will get some. But I wish you would look, and you can click on them for a much LARGER look. (Scott said that you and he would be looking with magnifying glasses) But this is the best I can do for now. I really appreciate the support and your knowledge and I have no doubt that you will be able to help me solve this. I have spent the morning repotting the damaged ones, washing off roots to hopefully get rid of any built up anything that might be on them. So, I will get the mag this week and I do fertilize with 20-20-20 regularly, so shouldn't that take care of the potassium? Or do I still need more? the above is the link for the images. Thank you very much again, -- Jill Bell +More Illustration, Graphic Design, Web Design on 12/15/01 11:23 PM, Derek Burch at derek@horticulturist.com wrote: > Jill, stealing from the old leaves means one of the mobile elements. The > very most likely is magnesium, with potassium a close second. Magnesium > tends to show as yellowing around the edge of the leaf, often leaving a > normal green center in an inverted V shape. > Potassium is less uniform in its effects - it may be a yellowing, may be an > orange cast, or may be speckling of the older leaves as the element is moved > to meet the needs of new foliage. > The easiest source of magnesium to obtain and to apply is epsom salts, > magnesium sulphate. You can water with a solution or sprinkle it on the > soil. It is hard to overdose, but to be sure not to cause an imbalance with > potassium, try to find a source of potassium to give at the same time. > Potassium nitrate is a great material which gives a little bit of nitrogen > to the leaves and also lots of potassium to meet the need for that. > Unfortunately, potassium nitrate is a prime bomb-making materail, so take > some good i.d. with you when you shop for it. > Don't cut off the yellowing leaves until you can't stand them any more. The > plant will be taking some materials from them, as well as using the > supplements that you are supplying. > Good luck with stopping this yellowing. Don't look for the old leaves to > green up necessarily, but expect the new ones to stay green. Derek > >

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