Life Cycle
Perennial
Plant Characteristics
Fine grass-like foliage
Growth Habit
Clump-forming, upright
Bloom Season
Late spring to early summer
Flavour Profile
Not applicable
Suitable for
Outdoor
Seed Type
Non-GMO
Plant Type
Flowering Ornamental Perennial
Planting Season
Spring
Fruit Size
Not applicable
Plant Height
25–40 cm
Light Requirement
Full sun to partial shade
Water Needs
Moderate
Hardiness Zones
5–9
Container Garden
Yes
Plant Spacing
20–30 cm
Planting Depth
Surface sow
Growing Conditions
Sunny to lightly shaded location
Frequently Asked Questions
Why is Sisyrinchium macrocarpum called blue-eyed grass?
Why is Sisyrinchium macrocarpum called blue-eyed grass?
The common name comes from the grass-like foliage and iris-like flowers associated with Sisyrinchium species, giving the plant a grass-and-flower appearance.
Can Sisyrinchium macrocarpum grow between rocks?
Can Sisyrinchium macrocarpum grow between rocks?
Yes. It is suitable for rock gardens, making it useful for compact spaces with good drainage.
Does Sisyrinchium macrocarpum form clumps?
Does Sisyrinchium macrocarpum form clumps?
Yes. It has a clump-forming, upright growth habit, allowing multiple stems to develop together as the perennial matures.
Can this perennial be used along a garden path?
Can this perennial be used along a garden path?
Yes. Its compact 25–40 cm height makes it suitable for borders, path edges, rock gardens, and other areas where a lower-growing plant is preferred.
Does Sisyrinchium macrocarpum tolerate some shade?
Does Sisyrinchium macrocarpum tolerate some shade?
Yes. The listed light requirement is full sun to partial shade, so it can handle some light shade while retaining suitable growing conditions.
What makes its foliage different from broad-leaved flowers?
What makes its foliage different from broad-leaved flowers?
Its fine, grass-like foliage creates a narrow-textured appearance that contrasts nicely with broader leaves in mixed garden plantings.