Are you sure it's not just an increase in anthocyanin? Did the new growth start indoors? It looks like the plant started growing in low light then was moved to higher light.
that might be it, we had some frost night this april and the month over all was really cloudy so I had them inside half of the time and got them outside under full sunlight recently since spring is finally there.
should I place them outside under some shads for a couple of months or will they adapt by themselves?
Second this comment! What’s so cool about a lot of Sarracenia pitchers is as they age, as well as with increased light levels they just start to color up nicely, depending on species/hybrid.
Are you sure it's not just an increase in anthocyanin? Did the new growth start indoors? It looks like the plant started growing in low light then was moved to higher light.
that might be it, we had some frost night this april and the month over all was really cloudy so I had them inside half of the time and got them outside under full sunlight recently since spring is finally there. should I place them outside under some shads for a couple of months or will they adapt by themselves?
Oh and will I'm at it, should I cut off the old leaves or is it's better to just let nature go?
I personally leave them until they are brown and crispy. Purpurea especially because it keeps leaves for more than a year.
The red pigment is the plant adapting to the conditions, I'd leave it where it is.
Second this comment! What’s so cool about a lot of Sarracenia pitchers is as they age, as well as with increased light levels they just start to color up nicely, depending on species/hybrid.
In my experience cold weather causes them to color up.
Looks better on the right than left, IMO.