so i was flipping thru the new orchid digest last night and there was
a culture note in there about watering all the plants once a month
with a solution of one teaspoon physan per gallon of water, as a
preventive measure.

wisdom from the group? possible downsides? my plants are all in
bark, and sphag, or bark and sphag, with 2 in S/H.....
TIA

--j_a

wrote:

so i was flipping thru the new orchid digest last night and there was
a culture note in there about watering all the plants once a month
with a solution of one teaspoon physan per gallon of water, as a
preventive measure.

wisdom from the group? possible downsides? my plants are all in
bark, and sphag, or bark and sphag, with 2 in S/H.....
TIA

--j_a


Hey, before I even read any replies, I'll ask a related question that I
keep wondering about but always forget to ask:
I get tired of my semi-hydro pots turning green then nearly black on the
inside surface. In fact, other plants in normal, but clear plastic, pots
turn green to some degree too. Can a physan solution either clear this
up or at least prevent it?
I've been half tempted to fill up the pot with a bleach solution then
see if I can flush it out in time to not kill the roots. Trouble is, I
don't have a plant in semi-hydro that I am willing to kill.

Steve

Since nobody is answering here, I'll just throw in what I've heard about
some south FL commercial growers. Many do spray monthly to ward off
problems. Not sure if they vary the product.

Diana

"Steve" wrote in message
...
wrote:

so i was flipping thru the new orchid digest last night and there was
a culture note in there about watering all the plants once a month
with a solution of one teaspoon physan per gallon of water, as a
preventive measure.

wisdom from the group? possible downsides? my plants are all in
bark, and sphag, or bark and sphag, with 2 in S/H.....
TIA

--j_a


Hey, before I even read any replies, I'll ask a related question that I
keep wondering about but always forget to ask:
I get tired of my semi-hydro pots turning green then nearly black on the
inside surface. In fact, other plants in normal, but clear plastic, pots
turn green to some degree too. Can a physan solution either clear this up
or at least prevent it?
I've been half tempted to fill up the pot with a bleach solution then see
if I can flush it out in time to not kill the roots. Trouble is, I don't
have a plant in semi-hydro that I am willing to kill.

Steve

On Thu, 26 Jul 2007 07:03:55 -0700, wrote:

so i was flipping thru the new orchid digest last night and there was
a culture note in there about watering all the plants once a month
with a solution of one teaspoon physan per gallon of water, as a
preventive measure.

wisdom from the group? possible downsides? my plants are all in
bark, and sphag, or bark and sphag, with 2 in S/H.....
TIA

--j_a

Dang it!
I wrote this long drawn out explanation and my frickin poster was
disabled on this PC so it just chunked it into space.
So let me just say this.
I use Physon or the pool supply store equivalent every single month in
my propagation room cause it can grow super mold really fast (because
of the RO water and extremely high humidity)
I mist the older seedlings with 1 tsp per gallon as well as there pot
or mount and the walls and surfaces get 1 or more Tbl per gallon. For
the young seedlings I cut the 1 tsp solution down even more.
When I soak my moss before using I soak it in Physon as well.
Don't know about s/h but I don't think I have ever lost a seedling or
plant to Physon overdose (that's not to say you can't)

NOOK

, 26 Jul 2007 07:03:55 -0700, wrote:

so i was flipping thru the new orchid digest last night and there was
a culture note in there about watering all the plants once a month
with a solution of one teaspoon physan per gallon of water, as a
preventive measure.

wisdom from the group? possible downsides? my plants are all in
bark, and sphag, or bark and sphag, with 2 in S/H.....
TIA

--j_a

In addition to it's "-icidal" properties, Physan is a good surfactant.
Because that means that a medium will be wetted and absorb water better, it
would seem to me that frequent use might ultimately result in shorter-lived
media. With inorganic media, of course, that's no concern.

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies. Books, Artwork, and lots of Free Info!


wrote in message
...
Dang it!
I wrote this long drawn out explanation and my frickin poster was
disabled on this PC so it just chunked it into space.
So let me just say this.
I use Physon or the pool supply store equivalent every single month in
my propagation room cause it can grow super mold really fast (because
of the RO water and extremely high humidity)
I mist the older seedlings with 1 tsp per gallon as well as there pot
or mount and the walls and surfaces get 1 or more Tbl per gallon. For
the young seedlings I cut the 1 tsp solution down even more.
When I soak my moss before using I soak it in Physon as well.
Don't know about s/h but I don't think I have ever lost a seedling or
plant to Physon overdose (that's not to say you can't)

NOOK

, 26 Jul 2007 07:03:55 -0700, wrote:

so i was flipping thru the new orchid digest last night and there was
a culture note in there about watering all the plants once a month
with a solution of one teaspoon physan per gallon of water, as a
preventive measure.

wisdom from the group? possible downsides? my plants are all in
bark, and sphag, or bark and sphag, with 2 in S/H.....
TIA

--j_a

interesting, interesting.... thx.


--j_a

wrote in message
oups.com...
so i was flipping thru the new orchid digest last night and there was
a culture note in there about watering all the plants once a month
with a solution of one teaspoon physan per gallon of water, as a
preventive measure.

Isn't that how antibiotics and insecticides lost their effectiveness?

Isn't that how antibiotics and insecticides lost their effectiveness?

1 teaspoon/gallon is about half the strength of a normal dose of Physan, and
I'd think that once a month wouldn't be too much, but maybe the resident
chemists will chime in here. Also, one could vary the product. Maybe Physan
one month, Phyton the next, and so on. Just my 2 cents.

Diana

it's starting to sound like this might be something i'd want to do
2-3x/yr maybe. i've had the odd plant get rot occasionally.

--j_a

"Diana Kulaga" wrote in message
.. .
Isn't that how antibiotics and insecticides lost their effectiveness?

1 teaspoon/gallon is about half the strength of a normal dose of Physan,
and I'd think that once a month wouldn't be too much, but maybe the
resident chemists will chime in here. Also, one could vary the product.
Maybe Physan one month, Phyton the next, and so on. Just my 2 cents.

Diana


Half strength is even worse since the target pest can better survive to
produce resistance.

Very interesting NOOK, it's always good to know info like this, tried &
true, so to speak.
What is the pool product equivalent's brand name & do you dilute it more for
plant useage?
Thanks & Cheers,
Wendy
wrote in message
...
Dang it!
I wrote this long drawn out explanation and my frickin poster was
disabled on this PC so it just chunked it into space.
So let me just say this.
I use Physon or the pool supply store equivalent every single month in
my propagation room cause it can grow super mold really fast (because
of the RO water and extremely high humidity)
I mist the older seedlings with 1 tsp per gallon as well as there pot
or mount and the walls and surfaces get 1 or more Tbl per gallon. For
the young seedlings I cut the 1 tsp solution down even more.
When I soak my moss before using I soak it in Physon as well.
Don't know about s/h but I don't think I have ever lost a seedling or
plant to Physon overdose (that's not to say you can't)

NOOK

, 26 Jul 2007 07:03:55 -0700, wrote:

so i was flipping thru the new orchid digest last night and there was
a culture note in there about watering all the plants once a month
with a solution of one teaspoon physan per gallon of water, as a
preventive measure.

wisdom from the group? possible downsides? my plants are all in
bark, and sphag, or bark and sphag, with 2 in S/H.....
TIA

--j_a