Species Crocus Zwanenburg

Exquisite, iridescent flowers.

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One of the first to flower, each fabulous bloom is 3-4cm across. The outer petals have a silver sheen and deep, purple venation. The pattern is most prominent when in bud. At the heart of the flowers are golden orange stamen. You can expect 1-2 flowers from each Crocus ‘Zwanenburg’ bulb.

This cultivar is noted for its ease of growth, it holds the prestigious RHS Award of Garden Merit.

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 inside the blooms, emerging refreshed in the morning after a good night’s rest and with a nice measure 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 with well drained soil. Crocus will tolerate light shade, such as under deciduous trees, especially in warmer zones, but they need the sun to open their petals. They 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 as required when they become crowded 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 or spring depending on your soil.



Botantical name

Crocus etruscus






Winter to Spring


Cool to Mediterranean


Australia wide

Frost hardiness


Full Sun to Semi Shade

Supplied as


Water needs