Acts as a phosphosugar phosphatase on a broad range of sugar phosphate substrates with preferential activity on D-ribose-5-phosphate, 2-deoxy-D-ribose-5-phosphate, 2-deoxy-D-glucose-6-phosphate, and D-mannose-6-phosphate and with a lower activity on D-fructose-1-phosphate, D-glucose-6-phosphate, DL-glycerol-3-phosphate, and D-fructose-6-phosphate. Optimum pH is 7.0. Ubiquitous with highest expression in flowers. Induced by NaCl and sorbitol. Belongs to the HAD-like hydrolase superfamily. DOG/GPP family.