Cleome hassleriana. Big clusters of light pink flowers with reddish highlights and very long stamens appear above erect stems with spirally arranged leaves. You might not even notice the plant until the first flowers open – like roman candles in the garden! The flowers are very exotic looking, with quite a unique structure. Plants from Spider Flower Cleome seeds grow as tall as 150cm (60″), but usually a bit shorter on the coast. Spider Flowers are attractive to hummingbirds and beneficial insects. This native of southern South America is too tall for most containers, but it sure looks good planted in small groups in the garden.