Pale yellow-eyed grass
Sisyrinchium striatum · Iridaceae
📷 Hectonichus · CC BY-SA 3.0
The gardener's calendar
Ideal time to plant pale yellow-eyed grass: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Evergreen, linear and narrow
- Flowering
- June to August, yellow flowers striped with purple
- Mature size
- 60 cm tall, 20-30 cm wide
- Growth
- Moderate
- Hardiness
- Down to approximately -10°C
- Origin
- Chile
- Soil type
- Well-drained, light to medium
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Sisyrinchium striatum likes balanced moisture and sun: no water excess, no prolonged drought. After 3-4 years, the clump naturally divides; divide it in autumn to rejuvenate.
The common mistake
You regularly dry it out in overly sandy soil or drown it in wet, compact soil: it disappears either way.
The pro's trick
Sow fresh seeds in autumn directly in pots: natural stratification improves germination and you get free plants.
Seasonal watch
Late summer-autumn: if the year is dry, water more; if it rains heavily, improve drainage to prevent root rot.
Care
Exposure
Sisyrinchium striatum needs a sunny location to flower generously. At least 6 hours of direct sunlight daily are necessary. In very hot regions, partial shade in the afternoon is welcome.
Watering
Water regularly in spring and summer to keep the soil moist but not waterlogged. Reduce watering in autumn and winter. Once established, the plant tolerates drought better.
Soil and drainage
Prepare a well-drained substrate rich in light organic matter. Sisyrinchium hates standing water which causes rhizome rot. Improve poor soil with mature compost.
Pruning and maintenance
Remove spent flowers to prolong flowering. In late winter, eliminate dead or damaged foliage. Light pruning keeps the plant compact and vigorous.
Fertilizer
Apply diluted balanced fertilizer in spring to support growth. During flowering, a weak monthly application encourages flower production. Limit applications in winter.
Diseases and pests
Watch for rhizome rot in case of excessive moisture. Aphids can occasionally colonize young leaves. Generally, the plant remains very hardy and rarely troubled by problems if drainage is good.
Did you know?
Sisyrinchium striatum is nicknamed bermudiana even though it originates from Chile, not Bermuda: this common name comes from a historical confusion between several species of the genus. The scientific name Sisyrinchium comes from ancient Greek and means 'small aromatic tuber', a reference to its tiny underground corms.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Early crocusCrocus tommasinianus
- Narrow-leaved blue-eyed grassSisyrinchium angustifolium
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- Fringed irisIris japonica
- Japanese irisIris ensata
- Snow CrocusCrocus chrysanthus
Tips generated and checked by Viridia — adapt them to your local climate.