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Stikeebun · 23-05-2006, 01:07 PM

Quote:

Originally Posted by Susan Erickson

On Mon, 22 May 2006 13:24:14 +0000, Stikeebun
wrote:
[color=blue]
It sounds like crown rot. The closest we have to a source/cause is a
habit of allowing water to stand in the crown late in the day. If the
plant goes into the evening with a wet center it is apt to get crown
rot. This will progress and kill the plant as in moves down the
crown. Cut out the rot and sprinkle with cinnamon. Water with
hydrogen peroxide (at human use strength) and make very sure this is
early am watering. Allow the plant to dry during the day so that the
crown is dry at night. Never allow any water to sit in the crown -
use paper towel if necessary to wick up droplets of water left in the
crown after watering your Phals.

Be agressive in killing this as it is an agressive rot. If this has
happened to more than one set of center leaves. YOU DO NOT have crown
rot. Crown rot will kill the growth point in the center of the plant
with the first set of leaves it kills.

If this is not the first set of leaves on this plant to get rot. Look
for other causes. Is there a chance that the plant was dropped and
the leaf tip broke? Is there a sun spot that burns this particular
area?

Good Luck

SuE
http://orchids.legolas.org/gallery/main.php

Hi Sue

Thanks for your advice, but this particular phal has never been allowed to sit with water on the leaves, it is treated the same as my others. It was also on the same table next to the others which are growing/flowering successfully. (ive moved it away in quarantine) This is now the 3rd leaf to be affected this way, so it looks pretty strange at the moment, like it's had a mohican! the older leaves underneath, about 4 of them, haven't dropped off and look ok. The newer ones towards the crown are curled round towards the ground and look like they have been folded up into a V shape. Still, it has 2 flower spikes growing! The new leaves only get to about 3 inches long and then the blackness starts from the tip. Any more thoughts would be appreciated...