WLP565 is White Labs' entry in the same demanding saison category Wyeast 3724 occupies — associated with Dupont-lineage character, prized for authentic farmhouse flavour, and carrying a similar real-world reputation for stalling or slowing dramatically if fermentation temperature isn't kept warm enough through to completion.
At 65-75% attenuation, WLP565's published range mirrors 3724's fairly closely, and in practice it can finish considerably drier than that range suggests once given enough sustained warmth to fully work through a wort's fermentable sugar — the same pattern experienced 3724 users already know to expect. A fermentation that starts cool and stays there risks sticking well above target, while a deliberate temperature push into the upper 70s partway through often gets a stalled batch moving again.
Classic Belgian saison and farmhouse ale are WLP565's defining styles, chosen by brewers specifically wanting authentic Dupont-adjacent character and genuinely willing to manage the same real patience-and-temperature demands 3724 requires of anyone using it. Belle Saison or Wyeast 3711 remain the more forgiving, more predictable alternatives for brewers wanting genuine saison character without that particular demanding fermentation temperament to navigate and manage on top of everything else a normal, already-busy brew day already involves keeping careful track of at once.