Date: Thu, 01 Apr 1999 23:08:20 -0500 From: "Richard Brown" <firstname.lastname@example.org> To: email@example.com Message-Id: <aabcdefg1186$foo@default> Subject: Re: Red Marks on Nepenthes leaves
> I have recently obtained a few Nepenthes with red blotches on alot of
> the leaves. I was told this was due to cold damage. Until this time I have
> thought these red spots to be the result of a fungus (rust) which other than
> being unslightly wasn't a threat to the plant. I had never heard of the
> markings due to cold temps. I sometimes get these dark red spots on plant
> leaves that have not been exposed to cool conditions.
> While at a bromeliad nursery the orchid grower had some N. x Coccinea,
> some had the red spots which he tried to tell me was a varigated leaf! But
> these plants did have damage due to cold.
> Could anyone offer comments on these spots?
Cold damage will show as red discoloration, but not as blotches. Water drops
on leaves will cause burns if conditions are very bright and hot. However,
red blotches are a trait of N. rafflesiana when they are grown in bright
"hard" conditions, and this trait is passed on in hybrids. N. coccinea has N
rafflesiana in its background, and thus shows the same red leaf blotching.
The Pring hybrids from 1950 show this same characteristic; my N. Lt. R. B.
Pring always has red blotches. It is not a varigated leaf, just a
characteristic of certain Nepenthes. My advice- Don't worry about it.
Pompano Beach, Florida
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