Each fabulous bloom is 3-4cm across. The outer petals have a silver sheen and deep, purple venation. The venation is most prominent when in bud. At the heart of the flowers are golden orange stigma. You can expect 1-2 flowers from each Crocus ‘Zwanenburg’ bulb.
Crocus 'Zwanenburg' is a cultivar noted for its ease of growth and it holds the prestigious RHS Award of Garden Merit. It flowers earlier than Dutch Crocus, breaking winter’s spell with their beauty.
Crocus can act as bee hotels! In the early days of winter, bees have been known to shelter in the safe harbour of the crocus blooms over night. As the petals open and close with the sun, the bees are assured of a relaxing night amid the blooms, emerging, refreshed in the morning after a good night’s rest and with a nice dose of pollen.
Crocus 'Zwanenburg' grows best in Cool to Mediterranean climates where they impress in rockeries, beds, lawn plantings and pots. Plant in a sunny spot into well drained soil. Crocus will tolerate light shade, such as under deciduous trees, especially in warmer zones. They adore winter sun, and need it to flower, but should be kept cool (by shade or mulch) in summer.
Crocus 'Zwanenburg' bulbs don't need to be lifted every year, so you can allow them to naturalise and only dig and divide after four or five years. It is a good idea to protect new growth from slugs and snails. Fertilise your Crocus annually in winter and spring.
Winter to Spring
Cool to Mediterranean
Full Sun to Semi Shade