Adding blue allium plants to your spring garden attracts pollinators, and makes your flower beds bright with color. While the size, form and bloom period of blue allium flowers vary from one species to the next, each is a dependable perennial. Their longevity and ease of growth make them some of the ultimate flowering alliums, as well as contributing to memorable floral displays, both in borders and containers. So what types of blue onions are best? Below, we take a closer look at some of the most popular varieties of blue allium for the home landscape, their unique characteristics, and specific needs regarding their care.
Dazzling Blue Allium Plants That Look Unreal
Fall-planted bulbs like alliums are an easy and cost-effective way to add vibrancy to your spring and summer garden. When growing alliums, many cultivars are marketed toward growers looking for true-blue flowers, but colors may vary. Most plants of this type open to reveal a range of blue-purple tones. Larger flowers, specifically, giant blue allium types, remain among the most popular. However, dwarf and low-growing species can also lend themselves well for use in your landscape, whether you’re designing a blue garden, a prairie meadow planting or a minimal modern plot. For unbelievable ornamental onions, try these blue allium flowers.
1. Blue of the Heavens
Growers are certain to delight in the precise color and form of this attractive blue globe onion. Small flower clusters are held atop tall stems, each reaching 12-24in (30-60cm) in height. Densely arranged florets further add to the head’s full appearance. The plants serve as a magnet to passing pollinators, luring beneficial insects to a pollinator garden with an abundance of nectar. You can expect the bulbs to easily perennialize, with hardiness through USDA zones 4-10.