Allium 'Summer Beauty' is a cultivar of an ornamental onion that features lavender-pink, globe-shaped flowers and is known for its long-lasting blooms and attractiveness to pollinators. 
Here's a more detailed look at the plant:
Key Characteristics:
Native Range: While the plant is popular in gardens, it's not native to North America, specifically Pennsylvania. 
Appearance: It boasts attractive, 2-inch lilac-pink globe flowers that emerge from narrow, strappy, dark-green foliage. 
Bloom Time: The flowers bloom in mid-to-late summer, providing a long-lasting display. 
Growth Habit: It grows to about 10 inches tall at maturity, extending to 20 inches with the flowers, with a spread of 10 inches. 
Soil and Light: It prefers full sun (more than 4 hours) and average to evenly moist conditions, but will not tolerate standing water. 
Deer Resistance: It is deer-resistant, making it a good choice for gardens where deer are a problem. 
Pollinator Attraction: It attracts butterflies and other pollinators, making it a valuable addition to a pollinator garden. 
Gold Medal Award: The Pennsylvania Horticultural Society awarded it a Gold Medal. 
Uses: It's a great choice for borders, containers, pollinator gardens, or cut gardens. 
Care: It's a relatively low-maintenance plant, thriving with minimal care. 
Propagation: It can be propagated by seed or division. 
Other Names: It is sometimes called the Summer Beauty Lavender Globe Lily.