  We predict that photonic moir\'e patterns created by two mutually twisted
periodic sublattices in quadratic nonlinear media allow the formation of
parametric solitons under conditions that are strongly impacted by the geometry
of the pattern. The question addressed here is how the geometry affects the
joint trapping of multiple parametrically-coupled waves into a single soliton
state. We show that above the localization-delocalization transition the
threshold power for soliton excitation is drastically reduced relative to
uniform media. Also, the geometry of the moir\'e pattern shifts the condition
for phase-matching between the waves to the value that matches the edges of the
eigenmode bands, thereby shifting the properties of all soliton families.
Moreover, the phase-mismatch bandwidth for soliton generation is dramatically
broadened in the moir\'e patterns relative to latticeless structures.
