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#1
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Camelia - Yellow Leaves and Feeding
During the Winter my Camelia had all green leaves but looking at it today
the top area leaves are turning yellow. There are buds on the Camelia and I am wondering if I should now feed the plant. The liquid feed that I use says to start in March. Also should I remove the yellowing leaves ? I have a link to pictures http://tinyurl.com/frtzv Apologies for the quality but best I could manage from the camera. M |
#3
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Camelia - Yellow Leaves and Feeding
"M" [email protected] wrote in message ... During the Winter my Camelia had all green leaves but looking at it today the top area leaves are turning yellow. There are buds on the Camelia and I am wondering if I should now feed the plant. The liquid feed that I use says to start in March. Also should I remove the yellowing leaves ? I have a link to pictures http://tinyurl.com/frtzv Apologies for the quality but best I could manage from the camera. M In addition to the comments made by Sacha I think you should try and remove any limestone rocks or concrete that are adjacent to the plant. |
#4
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Camelia - Yellow Leaves and Feeding
On Tue, 14 Mar 2006 17:33:55 -0000, "M" [email protected] wrote:
During the Winter my Camelia had all green leaves but looking at it today the top area leaves are turning yellow. There are buds on the Camelia and I am wondering if I should now feed the plant. The liquid feed that I use says to start in March. Also should I remove the yellowing leaves ? I have a link to pictures http://tinyurl.com/frtzv Apologies for the quality but best I could manage from the camera. M Assuming they're not just old leaves dying off, the usual cause of yellowing of the leaves (chlorosis) is if the plant is growing in alkaline soil, possibly due to the presence of chalk or limestone, or being watered with hard water (although this last mostly affects plants grown in tubs). How long have you had it? Was it newly planted last autumn? Did you plant it too deep? If so, the roots may be suffocating and not drawing enough in nutrients, especially if the soil is poorly drained. Lack of nitrogen fertiliser can also cause chlorosis in much the same way as the poor root function just described, and another possibility is a virus giving a result rather similar to variegation. Do you know that your soil is acid? Have you got other camellias or rhododendrons or heathers growing healthily nearby, or in your neighbours' gardens? Have you been watering it with hard tap water? Use rain water from now on if you have. If none of these, then a virus is a possibility, in which case there's not a lot you can do about it short of destroying the plant and getting another. But I don't think such a virus actually causes much harm. I would say it's a little early for feeding yet; I don't usually feed until after flowering. Use an ericaceous feed, widely available in garden centres etc. as it will help combat alkalinity in the soil if you have it (but isn't really a long term solution). -- Chris E-mail: christopher[dot]hogg[at]virgin[dot]net |
#5
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Camelia - Yellow Leaves and Feeding
"M" [email protected] wrote in message ... During the Winter my Camelia had all green leaves but looking at it today the top area leaves are turning yellow. There are buds on the Camelia and I am wondering if I should now feed the plant. The liquid feed that I use says to start in March. Also should I remove the yellowing leaves ? I have a link to pictures http://tinyurl.com/frtzv Apologies for the quality but best I could manage from the camera. M I'll only repeat what Sacha suggested about trying sequestrene. With acid loving plants, too much lime locks out the iron in the soil (or something like that ) and the sequesetred iron is recognised as a good tonic for all such plants in less than ideal conditions. Although it does cost a bit. Your pictures are fine IMO. If you use a site called Tinypic http://tinypic.com/ you can host your photos from there. You just browse on your computer to where the individual picture files are, and upload them from there. The display times are usually much faster as a result. michael adams .... |
#6
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Camelia - Yellow Leaves and Feeding
"M" [email protected] wrote in message
... During the Winter my Camelia had all green leaves but looking at it today the top area leaves are turning yellow. There are buds on the Camelia and I am wondering if I should now feed the plant. The liquid feed that I use says to start in March. Also should I remove the yellowing leaves ? I have a link to pictures http://tinyurl.com/frtzv Apologies for the quality but best I could manage from the camera. M I'll only repeat what Sacha suggested about trying sequestrene. With acid loving plants, too much lime locks out the iron in the soil (or something like that ) and the sequesetred iron is recognised as a good tonic for all such plants in less than ideal conditions. quote Here's some more information from a(n Australian) website quote Iron Deficiency Iron deficiency (Fe), or lime-induced chlorosis, is often caused by an alkaline soil (high pH). As the pH of the soil increases above 6.0, the availability of iron to the plant gradually decreases. A wide range of ornamentals including both Australian native plant species and introduced species is affected by iron chlorosis (see Table). Importance of iron Iron is needed by all plants. It is an essential precursor for the formation of chlorophyll, which gives plant foliage its green colour. Chlorophyll is an active element in photosynthesis, a process which allows the plant to grow, mature and produce flowers. Iron is also important for normal activity of enzymes involved in plant respiration. Symptoms of iron deficiency Plant growth and vigour are reduced when the iron supply is limited. Since iron is not easily translocated within the plant, the symptoms of reduced green colour, due to less chlorophyll production, appear on the new leaves.* ^^^^^^^^^^^^^^^^^^^^^^^ The visual symptom on these new leaves is interveinal chlorosis, or ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ yellowing of the plant between the leaf veins. In severe cases the entire ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ leaf may be white. This symptom is similar to that caused by magnesium deficiency but iron deficiency is exhibited on the younger leaves, while magnesium deficiency is exhibited on the older leaves. Symptoms of iron deficiency tend to be more pronounced during winter. Causes of iron deficiency Iron deficiency does not only occur in alkaline soils but very often develops in acid soils, frequently limiting the growth of such acid-loving species as azaleas and rhododendrons. This condition may result from an accumulation of the heavy metals, copper, manganese and zinc, relative to the amount of iron present. http://tinyurl.com/mrdsu for - http://www.dpi.vic.gov.au/dpi/nrenin...ddocs/-71E8091 F577D52D24A2568B30004F3B2-F35B1CAC4054922BCA256BC8000291D4-7 CBD1D972BE5DD0D4A256DEA0027411F-1A0F1867E007236CCA256BCF000B BF35?open /quote * this should possibly aid identification. And sequestrene which contains sequestered or chelated iron (no more Googling tonight) is recognised as a good remedy. Many purveyors of seaweed feedd claim it contains chelated iron as well, but that maybe needs further confirmation. Although it does cost a bit. Your pictures are fine IMO. If you use a site called Tinypic http://tinypic.com/ you can host your photos from there. You just browse on your computer to where the individual picture files are, and upload them from there. The display times are usually much faster as a result. michael adams .... |
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