Quote:
Originally Posted by sweta
|
I highly doubt those lights are too hot since a Brassavola is an intermediate to hot grower, unless they're literally touching the leaves, but you can place them pretty close.
As Estación said, this plant can show purple/dark dots on the tips if it's getting enough light, not really in the creases but if it's not spreading, it could really be anything. A virus can't be ruled out, for example. But I do think that plant looks okay, it just might be a bit sluggish due to conditions not being optimal.
Think of day temperatures of 75-80ºF and 65ºF-70ºF at night. It'll be happier towards the warmer end of the spectrum.
It doesn't need super high humidity but it does need something closer to 40-50%. 30% is too low.
Keeping soppy Sphagnum plus cold temperatures will equal the sluggish growth you're seeing. Is the pot too big? The bigger it is, the wetter it will stay.
Regarding fungicides, I personally use them as preventative, especially with new plants. In this forum people are not very keen to that idea, however, you will see literature that recommends fungicides as preventative as opposed to treatments. Many growers use them monthly or at least twice a year (Seasonally). Norman Fang talks about drenching many of his plants in Physan 20 monthly.
I only do it with newer plants both to protect my collection and to give the newer plant a shot at being protected while it adapts to the new environment. Then as they get established in my environment I start a routine of watering with Quantum Total, over time the beneficial bacteria in Quantum will outcompete pathogens so fungicides really become unnecessary. Besides, they would kill the beneficial bacteria as well.
In your case I would look into finding a way to keep this plant airy (net pots, bark medium, air circulation), well lit (grow lights, windowsill), more humid and warm (perhaps a heat mat or a mini greenhouse).
So TL;DR: the plant is too cold.
Hybrid Mode
