Your S. oreophila and S. flava still have last year's green phyllodia (non-carnivorous winter leaves). With plenty of new pitchers emerging, should you trim the old phyllodia?
Yes, trim them now. Phyllodia serve their purpose in winter; by summer, the plant has ample photosynthetic surface from its pitchers. Removing old phyllodia:
Cut at the base with clean scissors. The plants will produce fresh phyllodia in late summer/fall as they prepare for dormancy. No harm done—this is standard seasonal maintenance for healthy Sarracenia.
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