The phase ordering process has been investigated in the liquid cristalline blue phase II. The domain growth has been measured for the phase transitions BPII<--BPIII and BPII<--isotropic by two different experimental methods : direct microscopic observations and visible light Bragg scattering measurements. The results for the BPII<--isotropic transition with a non-conserving order parameter field are consistent with theoretical predictions. For BPII<--BPIII transition with a conserving order parameter field deviations from theoretical predictions are found.