perennial

Puerto Yellow Blue-eyed Grass

Sisyrinchium tinctorium 'Puerto Yellow'

The Story

Plant Bio

A member of the Blue-eyed Grass genus, this perennial features slender, iris-like foliage and star-shaped yellow flowers that bloom from late spring.

The 'Puerto Yellow' cultivar is distinguished by its bright, cheerful yellow flowers and its compact growth habit, making it an attractive and low-maintenance addition to borders and rock gardens.

Uses & Benefits:

Vivid yellow flowers add cheerful color to sunny borders and wild gardens.

Requires minimal watering once established, suitable for xeriscaping.

Provides nectar for pollinators like bees and butterflies.

Essentials

At a Glance

Plant Type

Perennial

Height

12 inches

Width

8 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

North America

Toxicity

Non-toxic

Planting

How to Grow

Tuck seeds into well-drained soil in early spring
Water regularly to keep soil moist but not soggy
Place in full sun for best flowering
Mulch lightly to retain moisture and suppress weeds
Divide every 3-4 years in early spring or fall
Deadhead spent flowers for prolonged bloom

Pro Tip

Ensure well-drained soil and full sun for vibrant blooms

Keep It Thriving

Care Guide

Do

Water during dry spells 🌱
Divide every few years to prevent overcrowding
Remove dead flowers to promote new blooms

Don't

Overwater to prevent root rot ❌
Plant in heavy clay soil without amendment ❌
Neglect mulching in hot weather ❌

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Fertilize
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Bright border with grassy textureWildflower meadow accentSunny rock garden

Companion Plants

Coreopsis Echinacea GaillardiaLavender Sedum

Multiply

Propagation Methods

Good to Know

Common Questions

Puerto Yellow Blue-eyed Grass questions

What zones can Puerto Yellow Blue-eyed Grass grow in?

Puerto Yellow Blue-eyed Grass is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Puerto Yellow Blue-eyed Grass deer resistant?

Not reliably. Deer may browse Puerto Yellow Blue-eyed Grass, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Puerto Yellow Blue-eyed Grass bloom?

Puerto Yellow Blue-eyed Grass typically blooms in late spring to early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Puerto Yellow Blue-eyed Grass need full sun?

Puerto Yellow Blue-eyed Grass does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Puerto Yellow Blue-eyed Grass drought tolerant?

Yes — once established (usually after the first full season), Puerto Yellow Blue-eyed Grass handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.