Yes, it is! Watercress comes loaded with a whole lot of nutrients and vitamins that are great for mothers-to-be and their developing baby. Folate in watercress helps keep away neural tube birth defects such as spina bifida in the baby and acts as an anti-depressant for expecting mothers. Additionally, watercress is also a good source of calcium and Vitamin C, known for boosting immunity and bone health respectively. However, you must wash your watercress thoroughly before consumption, to get rid of any bacteria.