Erigeron Glaucus Plant Care: How To Grow Seaside Daisy

Erigeron Glaucus [Er-IJ-er-on GLAW-kus] is a wildflower to the United States These California native plants and Oregon lives along the coastlines where it grows around dunes, coastal bluffs, and beaches. 

It is also known by the scientific name of Erigeron Glaucus Ker Gawl.

This beautiful plant belongs to the daisy family, Asteraceae, and originates from North America. 

Aster-like violet flowers of the Seaside Daisy (Erigeron Glaucus)

Its aster-like violet flowers make it a stunning addition to coastal gardens, rock gardens, and seaside gardens. 

The common names for Erigeron Glaucus plants include:

  • Beach Aster
  • Seaside Fleabane
  • Sea Breeze Pink
  • Seaside Daisy
  • Sea Breeze Mauve

Erigeron Glaucus Plants Care

Size & Growth

This perennial flowering plant type grows from a robust rhizome and produces spoon-shaped, thick leaves. 

Some leaves might have a small number of teeth along their edges. 

The plant grows 2” – 12” inches long, with 0.3” – 5” inches long leaves.  

Flowering and Fragrance

The Seaside Fleabane produces inflorescences of one to nine flower heads in varying sizes. 

These daisy-like flowers are usually 0.4” – 1.2” inches wide. 

The flower color may range from deep blue-purple shades to creamy-white with yellow centers.

When growing in mild climates, these flowers can continue blooming till the early winter season.

Light & Temperature

The Seaside Daisy prefers the full sun, but will also tolerate part shade, particularly during warmer climate. 

Place this plant in a location where it can enjoy full sunlight or under light shade if growing in hot regions.

The plant will need protection from the afternoon sun in hotter areas as the scorching heat will burn the plant. 

It is hardy to a minimum of 10° degrees Fahrenheit (-12° C).  

The USDA hardiness zones of this plant are 8 – 10.

Watering and Feeding

The Seaside Fleabane is pretty drought tolerant, but occasional irrigation results in a robust appearance. 

New plants must be regularly watered for the initial weeks. 

Afterward, the watering schedule should be adjusted as per the soil type and temperature. 

This plant usually needs watering after two to three days.

Feed the plant using slow-release fertilizers during the spring season.

Soil & Transplanting

This native plant grows optimally in a clay mixture but also thrives in a well-draining fertile sandy mixture. 

Spread a mulch layer to keep the soil moist and cool during intense heat or dry conditions.

Grooming and Maintenance

Wilted and dead flowers must be cut off regularly to promote more blooms and to maintain the neat appearance of the plant. 

During the late fall season, trim back the plant to about 2” inches of the stem if it gets lanky.

Regular trimming of wilted leaves and flowers will result in a rejuvenated plant and an increased number of blooms. 

For a stunning ground cover or border, be sure to plant it 2’ feet apart.

Other Fleabanes of Interest:

How To Propagate Seaside Daisy

The propagation of this plant is done through division or stem cuttings. 

Plant during the early spring season or late summer.

When propagating using stem cuttings, make sure to cut the stems at the plant’s base and remove the leaves. 

The base must be dipped in a rooting powder and inserted in a mixture of potting compost and sand. 

Keep the soil moist until roots are formed. 

Transfer the rooted plant in the garden or a big container.

The division of the plant should be done during the early spring season. 

Carefully lift the entire clump using a spade and separate the clump in various pieces. 

Make sure to remove the majority of the stems from this process. 

Replant these divisions in big containers or individual spots in the garden. 

Cover with fertile compost and water regularly.

Seaside Daisy Pest or Diseases

Seaside Daisy is a reliable and easy plant to grow. 

It is deer resistant and rarely has any disease or pest problems. 

It is recommended to be on a lookout for powdery mildew and treat immediately.

Erigeron Glaucus Uses

The Seaside Fleabane is popularly used in the butterfly garden, coastal garden, rock garden, borders, beds, along the slopes, and pots and containers. 

It also works well for xeriscaping but flourishes best in locations with good drainage and along the seaside.

These plants are also suitable to grow on top of walls, for embankments, in rockeries, and with other varieties. 

The flowers attract butterflies, making the garden more lively and colorful.