I also don't have the UV you do, Kenni.
--
Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies. Books, Artwork, and lots of Free Info!
"Kenni Judd" <kenni@[EMAIL PROTECTED]
> wrote in message
news:odGdndDDvvkVz33anZ2dnUVZ_t-nnZ2d@[EMAIL PROTECTED]
>I can't claim 35 years of growing, only 26. But I have noticed one
>difference: white pots don't last nearly as long as any of the other
>colors. They get brittle and start breaking much faster. Ray must keep
up
>with his repotting better than I do :<) Other than that, I agree with
him.
>Kenni
>
> "Ray B" <raybark@[EMAIL PROTECTED]
> wrote in message
> news:oo8Dj.596$Nr1.165@[EMAIL PROTECTED]
>>I have been growing orchids for about 35 years. In that time period, I
>>have heard lots of comments about pot color - stuff like "black pots get
>>too warm in the sun, so use green, or better yet, white", "clear pots
act
>>like a greenhouse and cook the roots", "clear pots should only be used
for
>>plants with chlorophyll in their roots".
>>
>> I have used them all, and I have seen no difference that can be
>> attributed to the pot color.
>>
>> I don't buy the "black pot" thing, as eva****ative cooling does occur
from
>> the medium, the incident light angle is probably too great to make an
>> appreciable impact most of the time (not to mention shading by the
>> plants' leaves), and maybe some plants LIKE to be warmer!
>>
>> For the one about how "clear pots act like a greenhouse", I would
simply
>> remind one of the first two items I stated above, and add that any
>> incident light isn't going any deeper than the pot/medium interface, so
>> how much heating effect could there be, anyway?
>>
>> As to the "chlorophyll-containing roots", I would think that almost all
>> epiphytic orchids have that feature, so that really opens up the range
of
>> acceptability pretty broadly. Is it a positive aspect of culture?
>> Likely, but if you do a quickie calculation of the surface area of the
>> roots growing against the pot wall compared to that of the rest of the
>> plants, I think you will find it to be miniscule. I will also add that
>> those for whom root-borne photosynthesis is not a big thing - paphs,
for
>> example - growing in clear pots is not a detriment.
>>
>> The bottom line, in my opinion, is personal preference. I like clear-
>> or translucent pots, as it makes it easier to judge watering needs and
>> see what's going on with the roots and medium. Some don't like the
look,
>> and as any time you have moisture, nutrition, and light, you WILL have
>> algae growth, you may not like the look of that, either (that's
>> preventable with periodic application of dilute bleach or disinfectant
>> [e.g., Physan] solutions).
>>
>> --
>>
>> Ray Barkalow - First Rays Orchids - www.firstrays.com
>> Plants, Supplies. Books, Artwork, and lots of Free Info!
>>
>>
>> "someone" <someone@[EMAIL PROTECTED]
> wrote in message
>> news:47dc587a$0$32047$da0feed9@[EMAIL PROTECTED]
>>> Recently I read somewhere that certain orchids should be grown in
clear
>>> pots, not opaque (brick-colored) pots. Is this true? If so, which
>>> varieties?
>>>
>>> I have a Laeleocattleya which is 18 years old (bought as a 1 mm clone)
>>> and only just started flowering last year, in an opaque pot. I also
>>> have a vanilla orchid about 6 years old, should it be in a clear pot,
>>> since it's one of those that climbs up trees, so needs more light? It
>>> hasn't flowered yet.
>>>
>>> s.
>>>
>>
>>
>
>
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