Alphabetical Plant Listing

Crocus sieberi (Sieber's Crocus)

Botanical Crocus, Sieber's Crocus, Snow crocus (Crocus Sieberi)


Vigorous, Crocus sieberi is a late winter-flowering crocus producing its charming flowers as the snow melts. Regarded by some as one of the most attractive crocuses, it is very hardy and ridiculously easy to grow, making long-lived clumps. Easily established, this crocus increases nicely over time, providing attractive splashes of color, like scattered gemstones sparkling on the ground!

  • Blooming occurs from late winter to early spring. The calyx-shaped flowers open only when the sun shines or when there is a lot of light; they close up in rainy weather and at night. Did you know that crocus bulbs remaining in the ground will always bloom a bit earlier than the ones planted the previous year?
  • Growing up to 3-4 inches tall (7-10 cm), this beauty naturalizes easily and will come back year after year!
  • Easily grown in average, medium moisture, well-drained soils in full sun or light shade.
  • Stunning in beds, lawns, under trees, rock gardens, in front of shrubs, along walkways. Spectacular in large sweeping drifts. For optimal effect, 100 to 150 corms should be planted. If used in lawns, however, the grass may not be mowed until six weeks after the crocuses have bloomed. If mowed earlier than this, the newly forming cormlets (developing on top of the mother corm) will not become large enough to flower next year.
  • To be planted in fall.

Guide Information

Hardiness 3 - 8
Heat Zones 1 - 8
Plant Type Bulbs
Plant Family Crocus
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early)
Winter
Height 3" - 4" (7cm - 10cm)
Spread 2" (5cm)
Spacing 2" (5cm)
Depth 3" (7cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Fragrant, Showy
Tolerance Deer
Landscaping Ideas Beds and Borders, Patio and Containers
Garden Styles City and Courtyard, Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.

Guide Information

Hardiness 3 - 8
Heat Zones 1 - 8
Plant Type Bulbs
Plant Family Crocus
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early)
Winter
Height 3" - 4" (7cm - 10cm)
Spread 2" (5cm)
Spacing 2" (5cm)
Depth 3" (7cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Fragrant, Showy
Tolerance Deer
Landscaping Ideas Beds and Borders, Patio and Containers
Garden Styles City and Courtyard, Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow
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