Perennial
Narrowleaf Blue-eyed Grass
Sisyrinchium angustifolium
Varieties We Carry
SuwaneeSisyrinchium angustifoliumBlueSisyrinchium angustifoliumStandardSisyrinchium angustifolium
Sizes & Pricing
4 inFrom$9.95
1 galFrom$6.95
Fresh this week. Last restocked Jun 25.
LightFull Sun, Part Shade
WaterModerate
Mature size0.5-2 feet × 0.5-2 feet
About Narrowleaf Blue-eyed Grass
Blue-Eyed Grass (Sisyrinchium angustifolium) is a native perennial of eastern North America and Florida in the iris family, forming neat tufts of narrow, flat, grass-like leaves and bearing small, star-shaped blue-violet flowers with yellow centers in spring and early summer. Despite its delicate appearance, it is a tough, adaptable native for moist to average garden soils. Starting at $6.95.
Plant details
- Bloom Season
- Spring, Summer
- Flower Color
- Blue
- Growth Rate
- Moderate
- Foliage
- Semi-evergreen
- Soil
- Sandy, Loam, Acidic, Moist
Best planting months
Recommended forZone 9b · St. Augustine, FL
J
F
M
A
M
JNow
J
A
S
O
N
D
This monthGood windowOther months
Seasonal care
Bloom season. Good planting window.
Active growing season.
Ideal planting window.
May lose some foliage in cold snaps.
Care essentials
Light
Blue-eyed grass performs best in full sun to part shade; adequate light is needed for consistent flowering through spring and into summer.
Water
Prefers consistently moist to average soils; naturally found along moist meadow edges and swale margins in Florida — do not let it dry out completely during the growing season.
Soil & Fertilizer
Grows in sandy to loamy moist acidic soils; little fertilizer required. Divide clumps every 2-3 years after bloom to maintain vigor, and allow self-seeding for naturalistic plantings.
Similar needs
African Iris
Shares 5 of the same needs: full sun, moderate water, sandy, zone 9a hardiness, and pollinator-friendly.
From $6.95Same conditions
Agapanthus
Shares 5 of the same needs: full sun, moderate water, sandy, zone 9a hardiness, and pollinator-friendly.
From $12.95Same conditions
Mexican Petunia
Shares 5 of the same needs: full sun, moderate water, sandy, zone 9a hardiness, and pollinator-friendly.
From $6.95Same conditions
Spiderwort
Shares 5 of the same needs: full sun, moderate water, sandy, zone 9a hardiness, and pollinator-friendly.
From $6.95Same conditions
Giant Apostle's Iris
Shares 4 of the same needs: full sun, moderate water, sandy, and pollinator-friendly.
From $16.95Same conditions
Peacock Ginger
Shares 4 of the same needs: shade, moderate water, loam, and pollinator-friendly.
From $6.95Same conditions
You may also like
Common questions
Is Narrowleaf Blue-eyed Grass a good plant for St. Augustine?
Narrowleaf Blue-eyed Grass is a perennial for Zone 9b coastal Florida gardens, reaching 0.5-2 feet × 0.5-2 feet.
Care information verified from
Last reviewed March 2026. Our care guidance comes from trusted horticulture sources and decades of helping St. Augustine gardeners. Conditions here can vary dramatically from one area to the next, so come ask us and we'll tailor it to your yard.