The TripAdvisor listing tags the venue as having 'Gluten free options', which is a thin positive signal. No menu is published, no gluten-free kitchen practices are described, and the restaurant operates by pre-order with same-day ingredient shopping, which may allow some flexibility but offers no structural safety for coeliac dining. Call ahead to confirm whether they can accommodate a gluten-free or coeliac order and whether any dedicated precautions are possible.
Honest caveat, FindMeGlutenFree reviews for a different venue with the same brand name (Roots Natural Kitchen in Newark, DE) report multiple glutening incidents and visible cross-contact; those reviews do not apply to this Roots 2 in St.