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Lemon seedling ill

 
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Lemandarangequatelo
Citruholic
Citruholic


Joined: 01 Mar 2010
Posts: 485
Location: UK

Posted: Wed 02 Nov, 2011 9:13 am

Hi all. I have a 6" tall lemon seedling about 5 months old that looks very ill. All of its leaves turned brown and fell off over the course of about 2 months. Now the top tip of the stem is turning brown and about an inch down the actual stem is turning brown and has shriveled - I can now easily bend the stem at that point because it is so soft.

I thought maybe I was watering it too much or the medium (compost + sand) was retaining too much water so I changed the medium about 2 weeks ago to a lighter one (compost + sand + well draining garden soil). This didn't prevent the final 3 leaves falling off or it's current condition. When I changed the medium I checked the roots and they looked healthy enough, they were a dirty whitish, definitely not brown or rotting.

I'm being careful not to over or under water it. I definitely haven't over fertilized it. It hasn't experienced any cold temperatures. I did move it indoors from the small greenhouse a month ago so it could be warmer but this didn't prevent the current condition. I have no idea what the cause could be.

Sorry no pics at the moment but does anyone know what could be causing this? What can I do to save this seedling?

Thanks for any help.
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Karoly
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Joined: 27 Dec 2010
Posts: 231
Location: Hungary, Europe, Zone 6

Posted: Wed 02 Nov, 2011 3:12 pm

If there are no pests for me it looks that your lemon has root problem (lack of oxigen). Lemons are very susceptible to root diseases. Growing plants in container the 95% of problems are coming from pot.

I never add sand to potting soil because the sand particle are to small and obstruct air ways, your soil become compact.

Good luck!
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sunrisecowboy
Citruholic
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Joined: 16 Aug 2007
Posts: 85
Location: Denver, Colorado

Posted: Wed 02 Nov, 2011 5:23 pm

It may take a while for the tree to adjust to the new environment (new dirt/location)
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Millet
Citruholic
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Joined: 13 Nov 2005
Posts: 6657
Location: Colorado

Posted: Wed 02 Nov, 2011 5:50 pm

I believe Karoly is correct. Many people believe adding sand to a medium helps the drainage and aeration. This is true only if the particle size of the sand is larger than 3-4 ml., otherwise it fills the available air pore space, driving out oxygen. The roots, although they do not die, can stop growing within 1 hour after the root zone's oxygen is eliminated. The lower the height of a container, the higher the level of oxygen is required. Lastly, adding actual soil (dirt) to a container is not a good idea. - Millet (439-)
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GT
Citruholic
Citruholic


Joined: 11 Jul 2010
Posts: 395
Location: Beaumont, TX (zone 9a)

Posted: Wed 02 Nov, 2011 11:56 pm

Lemandarangequatelo,

I agree with Karoly and Millet. I think you need another medium with no sand and no garden soil. Try pine bark chips instead.

Perhaps it is not correct but I was able to rescue one seedling with similar problem by abundant watering it with dish soap solution after re-potting and giving no water after that for two weeks. I think this should stop any root rot.

Good luck!
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Lemandarangequatelo
Citruholic
Citruholic


Joined: 01 Mar 2010
Posts: 485
Location: UK

Posted: Thu 03 Nov, 2011 7:18 am

A big thank you to all who have replied. The consensus seems to be that it is a problem with the growing medium. I will try repotting the seedling again. I am using horticultural sand which is course, hopefully it isn't blocking the air gaps in the medium. My garden soil seems to be good draining but I will omit it this time as recommended. Hopefully I can save this seedling and find the right medium for future seedlings. Thanks to you all again.
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nicky
Citruholic
Citruholic


Joined: 15 Apr 2011
Posts: 48
Location: Long Island, NY

Posted: Fri 20 Jan, 2012 4:34 pm

Hi,

I have some Limequat seeds that are sprouting. Does anyone know if these will be "true" to the parent plant?
Thanks

_________________
Enjoy growing dwarf citrus indoors&outdoors. Currently learning to graft.
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Lemandarangequatelo
Citruholic
Citruholic


Joined: 01 Mar 2010
Posts: 485
Location: UK

Posted: Fri 20 Jan, 2012 10:46 pm

Hi Nicky, yes limequat seeds should be true to type and give you limequat trees.
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