Summer Peek-a-Boo™ Ornamental Onion

allium summer peek a boo ornamental onion ftimg

Summer Peek-a-Boo™ Ornamental Onion

Allium ‘Summer Peek-a-Boo’

Description & Overview

A sport of Allium ‘Summer Beauty’ with medium purple flower heads set consistently above compact foliage. Attracts butterflies and pollinators. An excellent choice for containers with an above average growth rate.

Core Characteristics

Mature Height: 8-12 inches
Mature Spread: 18-24 inches
Growth Rate: Perennial
Growth Form: Clumping perennial
Light Requirements: Full Sun
Site Requirements: Moist-dry soil. Drought tolerant once established.
Flower: Pink-purple globe
Bloom Period: Summer, July through August
Foliage: Bright Green
Fall Color: N/A
Urban Approved: Site Specific
Fruit Notes: N/A

Suggested Uses:

Low border, massing, butterfly garden, hummingbird garden, small gardens.

allium summer peek a boo ornamental onion pollinator

Wildlife Value:

Attractive to wildlife like bees, butterflies, and hummingbirds.

Maintenance Tips:

Seed heads can be left up overwinter for interest, or pruned back. Clean up dead foliage in spring.


Rabbits can sometimes browse this plant. Use Bobbex-R if significant damage is observed.

allium summer peek a boo ornamental onion perennial

Leaf Lore:

If plants had cheeks, you’d want to pinch Summer Peek-a-Boo’s because it is so adorable. Perfect for the front of a border or a small garden, the grass-like foliage provides a light texture, topped with cheerful clusters of pinkish-purple flowers in summer. This plant is also about as low-maintenance as you can get: stays short, doesn’t reseed, it handles dry, compacted soil, salt and snow in winter, and deer and rabbits won’t touch it for the most part. Since it is an Allium, it does have a slight oniony fragrance, but that is a small price to pay for all the pollinators that will visit the plant when it blooms.

Ornamental Alliums are closely related to onions, garlic, and leeks. If you dig up a Summer Peek-A-Boo Allium and spread the leaves apart, you’ll see them attached to little bulbs, like an onion. This makes Allium one of the easier plants to divide and transplant.

For more information, read the book Garlic, Onion, and other Alliums by Ellen Spector Platt.

Companion Plants:

Salvia, Shasta Daisy, Coneflower, Little Bluestem, Butterflyweed

allium summer peek a boo benchcard