I grow Bowiea volubilis here and the flowers are greenish-yellow and not at all conspicuous. But there are lots of them. This plant seeds itself around, too. It's a pot plant here, not a garden plant. Jim McKenney Montgomery County, Maryland, USA, USDA zone 7, where when I was a youngster, I had Bowiea volubilis and Dichelostemma volubile confused.