Iris hollandica 'Professor Blaauw' (Dutch Iris)
Dutch Iris 'Professor Blaauw', Fleur de Lis 'Professor Blaauw'
Award-winner Dutch Iris 'Professor Blaauw' features elegant and showy deep violet-blue flowers, about 3-4 inch wide (8-10 cm), with bright yellow central markings on their falls. The flower stalks are sturdy and surrounded by sword-like leaves.
- This iris was granted the prestigious Award of Garden Merit by the Royal Horticultural Society in 1994.
- Flowering occurs in late spring to early summer for 2-3 weeks.
- Generally growing up to 22-26 inches tall (55-65 cm), it makes excellent cut flowers!
- Easily grown in average, medium moisture, well-drained soils in full sun. Tolerates some afternoon shade.
- Lovely in beds and borders. Spectacular when planted in groups (at least 20 bulbs)!
- Deer and rabbit resistant
- To plant in fall or spring
- All parts may cause discomfort if ingested. Wear gloves and other protective equipment when handling.
- Toxic to dogs, toxic to cats, toxic to horses.
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Requirements
| Hardiness | 6
– 9 |
|---|---|
| Heat Zones | 1
– 9 |
| Climate Zones | 2B, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 |
| Plant Type | Bulbs |
| Plant Family | Iris Hollandica - Dutch Irises |
| Exposure | Full Sun |
| Season of Interest |
Spring (Late) Summer (Early) |
| Height | 1' – 2' (30cm – 60cm) |
| Spread | 2" – 3" (5cm – 7cm) |
| Spacing | 3" (7cm) |
| Depth | 5" (12cm) |
| Water Needs | Average |
| Maintenance | Low |
| Soil Type | Clay, Loam |
| Soil pH | Acid |
| Soil Drainage | Moist but Well-Drained, Well-Drained |
| Characteristics | Cut Flowers, Plant of Merit, Showy |
| Tolerance | Deer, Rabbit |
| Garden Uses | Beds and Borders, Wall-Side Borders |
| Garden Styles | City and Courtyard, Coastal Garden, Informal and Cottage, Traditional Garden |
Great Plant Combination Ideas with Iris Hollandica - Dutch Irises
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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.
Requirements
| Hardiness | 6
– 9 |
|---|---|
| Heat Zones | 1
– 9 |
| Climate Zones | 2B, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 |
| Plant Type | Bulbs |
| Plant Family | Iris Hollandica - Dutch Irises |
| Exposure | Full Sun |
| Season of Interest |
Spring (Late) Summer (Early) |
| Height | 1' – 2' (30cm – 60cm) |
| Spread | 2" – 3" (5cm – 7cm) |
| Spacing | 3" (7cm) |
| Depth | 5" (12cm) |
| Water Needs | Average |
| Maintenance | Low |
| Soil Type | Clay, Loam |
| Soil pH | Acid |
| Soil Drainage | Moist but Well-Drained, Well-Drained |
| Characteristics | Cut Flowers, Plant of Merit, Showy |
| Tolerance | Deer, Rabbit |
| Garden Uses | Beds and Borders, Wall-Side Borders |
| Garden Styles | City and Courtyard, Coastal Garden, Informal and Cottage, Traditional Garden |
Great Plant Combination Ideas with Iris Hollandica - Dutch Irises
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