[orchidhelp] Re: dead orchids

  • From: Jessica Katz <bklyn.nighthawk@xxxxxxxxx>
  • To: orchidhelp@xxxxxxxxxxxxx
  • Date: Fri, 25 Jun 2010 16:21:27 -0400

Oh, this is painful, Gary.  I wish I knew enough about plant pathology to be
of help.  All I can do is send lots of sympathy your way.  Are things stable
now, or are you still having losses?

I hope someone can figure this out.

Are there any botanic gardens near you that do assessments of plant diseases
or other organizations where you could send sample of the plants for ID?  I
know that the NY Botanical Garden in NYC has a large research facility.
Maybe there are some experts closer to you.



On Fri, Jun 25, 2010 at 7:43 AM, Gareth Wills <gwills13@xxxxxxxxxxxxx>wrote:

>  I’ve had a strange angel of death pass over my greenhouse this past
> winter. First, most of my Angraecums were killed over a period of about a
> month. This included bosseri, distichum, eburneum superbum, elephantinum,
> leonis, Longiscott 'H&R', magdalense 'Pauwela', scottianum, sesquipedale,
> and superbum. All were good-sized plants last autumn some specimen-sized.
> Calceolus, compactum, didieri, and eichlerianum survived in good health.
> Sesquipedale and eburneum were massive plants in 12”clay pots for the last
> 5 years potted with clay shards, charcoal chunks and 3-4” pieces of cork.
> The lower leaves shriveled and dropped followed quickly by the next set
> and nothing I did stopped the progression. The shriveled leaves were black
> but not at all moist. The stem did the same. The compost was not degradedand 
> the pots hadn
> ’t been moved from their positions in several years. The survivors were
> potted in wooden baskets while those that succumbed were in clay pots. No
> insects were found.
> The others that were smote were the Broughtonias all various clones of
> sanguine and were mounted on cork or fern. All except 3 were killed. The
> roots dried up (not too unusual) but then so did the p-bulbs. Some were
> clumps 8 inches across. Now they didn’t seem to be at their best at the
> end of last summer, they hadn’t grown much. The youngest mounts did the
> best. I’ve managed to revive a couple starting over with a couple of
> bulbs. But most of the bulbs were completely dehydrated. I always grow
> them with the vandas and have done very well in the past.
> Anyone with some ideas as to what’s happening here? No other plants seemed
> to suffer in the gh this winter.
> Gary
> In South Carolina

Jessica Katz
Brooklyn, NY
"We must be the change we wish to see in the world."
"To forget to dig the earth and to tend the soil is to forget ourselves."
   - Mahatma Gandhi

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