Iron-Cross Begonia (Begonia masoniana) Iron-cross begonia gets its name from the cross shape that appears on each of its broad leaves. Because they're lovely as well as durable, this begonia and its relatives make superb foliage plants. Iron-cross begonia produces delicate pink and green blossoms in spring, but the flowers are insignificant compared to the foliage. Light Place in medium to high light during the winter and medium light the rest of the year. Tolerates low light. Grows well if under artificial light 14 hours per day. Water Allow soil to dry out slightly between thorough waterings. Mist daily. Raise humidity. Temperature Maintain temperatures to low 60s at night for best growth. Plant tolerates average temperatures. Comments Feed weekly with mild solution during active growth. Pinch growing tips to control growth and to produce bushier plants. Propagate by rhizome division or seed.