• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide

Allium senescens ssp. glaucum, Late Summer Fall Blooming Ornamental Onion

Add a twist of beauty to the edge of your garden, rock wall or herb garden with Allium senescens glaucum.

This mid to late summer blooming allium goes by the common names Ornamental onion as well as German or Mountain garlic.  The 1-inch diameter flowers are lavender or mauve and stand above the foliage. The gray green leaves stand about 6” tall and have a slight twist, adding to its beauty. It is evergreen in milder regions.

Hardy in zones 4 to 8 it grows best in full sun or partially shaded locations.  It’s very adaptable and drought tolerant once established. Deer tend to leave it be and it tolerates growing near black walnut trees.

Like other alliums, it is grown from bulbs but the plant can be divided in early spring or fall. Or separate the individual bulbs to start new plants.

A bit more information: Use a variety of alliums (flowering onions) throughout your garden for spring, summer and fall blossoms. Check out Longfield Gardens Bloom Chart for Allium Bulbs for help designing season-long color into your landscape.

Upcoming Live Events
& Webinars


March 19, 2025
FREE WEBINAR:
Be a Waterwise Gardener
Register here


March 22, 23, 29, 30, 2025
REALTORS Home & Garden Show
West Allis, WI

March 26, 2025
FREE WEBINAR:
Succession Planting & Crop Rotation

Register here

March 27, 2025
FREE WEBINAR:
Rain Garden Q & A

Register here

April 2, 2025
FREE WEBINAR:
Container Gardens for Sun & Shade
Register here


April 10, 2025
FREE WEBINAR:
Reinvigorate Your Rain Garden
Register here


April 12, 2025
Plant a Colorful & Edible Spring Garden
Pasquesi Home & Gardens
Lake Bluff, IL

April 26, 2025
Organic Gardening Basics
Ebert's Greenhouse Village
Ixonia, WI

May 7, 2025
FREE WEBINAR:
Vertical Gardening
Register here


May 10, 2025
Ask the Plant Doctor Q&A
Ebert's Greenhouse Village
Ixonia, WI

May 11, 2025
Ask the Plant Doctor Q&A
Ebert's Greenhouse Village
Ixonia, WI

May 15, 2025
FREE WEBINAR:
7 Steps to Managing Water on Your Property

Register here

May 17, 2025
Ask the Plant Doctor Q&A
Ebert's Greenhouse Village
Ixonia, WI

May 18, 2025
Ask the Plant Doctor Q&A
Ebert's Greenhouse Village
Ixonia, WI

June 4, 2025
FREE WEBINAR:
Attracting Hummingbirds

Register here

June 8, 2025
Selecting the Right Hydrangea
for Your Landscape

Ebert's Greenhouse Village
Ixonia, WI​​​​​​​

WATCH ON-DEMAND WEBINARS

Learn More

Book an Appearance

Learn More

Enter to Win

Wild Valley Farms' Wool Pellets 
& Gardener's Bundle 

ENTER NOW