Diagnosing Stunted Purple Pitcher (Sarracenia purpurea) in Mixed Bog

A grower's S. purpurea in deep peat/perlite/sand bog (8-9 hrs sun, 50-55 ppm water) produced normal pitchers early season, now stunted/deformed. Other bog plants (Sarracenia, cobra, flytraps, pings, sundews) thrive. Asks if overwatering, pests, or other issue.

Root Inspection Needed

Unpot and check roots/rhizome for pests. No obvious aphids visible. Treat findings accordingly.

Alternative: Herbicide Drift

Trace herbicide (e.g., Roundup) exposure can cause deformity. If so, time will dissipate it.

Isolated Issue

Since only this plant affected in healthy bog, cause is likely localized (pests or chemical).