Leucanthemum x superbum (Shasta Daisy)

Shasta Daisy is a highly popular herbaceous perennial valued for its prominent and spectacular floral display in summer

What is Shasta Daisy?

Leucanthemum x superbum, commonly known as Shasta Daisy, is a flowering perennial plant is a hybrid produced in 1890 by the American horticulturist Luther Burbank from several daisies. It is named after California’s snowy Mount Shasta because of its large, white, snow-like flowers. Noted for its bright, cheerful flowers and resilient nature, it’s popular among gardeners worldwide.

Habit and Size: The Shasta Daisy is an upright, clump-forming perennial with sturdy stems that can withstand wind and rain, making it an excellent choice for various garden settings. Mature plants reach a height of 2-4 feet (60-120 cm) and a spread of 1-3 feet (30-90 cm), depending on the growing conditions and variety. Dwarf varieties may be smaller.

Foliage: The plant’s dark green leaves are oblong to lanceolate and coarsely toothed. They are generally clumped at the base of the plant but can also line the stems. The foliage is semi-evergreen in mild winter areas.

Flowers: The flowers are perhaps the most recognizable feature of Shasta Daisies. They typically measure 2-3 inches (5-7 cm) across, with a bright yellow center disk surrounded by white ray petals. The blooms can be single or double and have a pleasing, subtle fragrance.

Blooming Season: Shasta Daisies bloom in the summer, typically from early to late summer, depending on the variety and climate.

Hardiness: The plants are hardy in USDA zones 4-9. They can tolerate winter temperatures down to -30°F (-34.4°C).

Uses: Shasta Daisies are versatile plants often used in borders, containers, cottage gardens, and cutting gardens. They also make excellent cut flowers.

Pollinators: The bright flowers are attractive to bees, butterflies, and other beneficial insects, making them a great choice for pollinator gardens.

Toxicity: Shasta Daisies contain mild toxins that can cause vomiting, diarrhea, hypersalivation, incoordination, and dermatitis in humans and animals. According to the ASPCA, daisies are toxic to dogs and cats. It is advised to avoid consumption and handle with care.

Deer and Rabbit Resistance: Shasta Daisies are often left alone by deer and rabbits, but they may be nibbled on if food is scarce.

Drought Tolerance: Shasta Daisies have moderate drought tolerance once established, but they prefer regular watering for optimal growth and blooming.

Invasiveness: Shasta Daisies are not considered invasive.

Leucanthemum x superbum ‘Manhattan’ with Crocosmia ‘Lucifer; and Geranium ‘Rozanne’ – Courtesy of Blooms of Bressingham

Why Should I Grow Shasta Daisies?

Shasta Daisies are an excellent addition to many gardens due to their numerous benefits:

• Aesthetic Appeal: The bright, cheerful flowers add an eye-catching splash of white to any garden. Their classic daisy form—white petals surrounding a yellow eye—is universally recognized and loved.
• Easy to Grow: Shasta Daisies are a hardy perennial, not particularly fussy about soil conditions, although they prefer well-drained soil. They can tolerate partial shade, although they do best in full sun.
• Long Blooming Period: Shasta Daisies have a long blooming season, often from early to late summer, providing color in the garden when many other plants have finished blooming.
• Pollinator-friendly: The flowers are a food source for bees, butterflies, and other beneficial insects. By planting them, you help support local biodiversity.
• Excellent Cut Flowers: Shasta Daisies make great cut flowers due to their long, sturdy stems and long-lasting blooms. They can be used in a wide variety of floral arrangements.
• Deer and Rabbit Resistance: While not entirely immune, Shasta Daisies are often overlooked by deer and rabbits, making them a useful choice in areas where these animals are common.
• Low Maintenance: Once established, they require minimal care. Deadheading spent flowers can encourage additional blooming, but little else is needed aside from regular watering in dry periods.
• Versatility: Shasta Daisies fit in a range of garden styles, including cottage gardens, wildlife gardens, cut flower gardens, and borders. Their classic look pairs well with many other garden plants.

In conclusion, Shasta Daisies are an attractive, easy-to-care-for, versatile perennial that can bring a lot to your garden or landscaping.