Yep, so Bulbine bulbosa does look rather similar. The fool proof method is to check the stamens in the centre of the flower, Clustered in bulbosa and spreading in glauca. The flowers tend to be clustered close to the stem in bulbosa, whereas in glauca they will often extend further from the stem (as is the case here). I would say anything growing in grassland or damp depressions will be B.bulbosa, B.glauca usually grows in drier habitat and as the common name suggests amongst granite boulders. This looks like pretty typical glauca, just can't see the stamens hence my other comment.