Gladiator Allium

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Tall round balls of stars, the Gladiator Allium (Allium 'Gladiator') adds its rosy purple uniform round spheres that draw butterflies and bees galore! These big purple pompoms stand up and stand out upright to add a whimsical formality to your landscape!

Also known as the Star of Persia, Alliums appear in mid-late spring from among dense clumps of green grassy foliage that carry the family onion scent. Fast-growing into modest-sized clumps with tall, nearly 4-foot stems that seemingly vanish in the summer heat, only to return dramatically next spring!

Very low-maintenance, these slowly expanding clumps thrive throughout USDA growing zones 4-9. These fall-planted bulbs are very easy to grow and the round spikey balls look fantastic in floral arrangements and bouquets!

Planting and Application:

Unique and textural garden specimens, Ornamental Onion are incredible blossoms for focal points in mixed containers, as solitary grouped specimens. Especially when used in long, uniform rows, as winding ribbons, or evenly spaced groupings to dramatically highlight their intriguing blossoms!

You'll want to include these perennials in your bulb gardens and cutting gardens! That way you will have armloads all spring to bring in and decorate your home while leaving many outdoors for pollinators and to add interest to garden beds and borders! Gladiator Allium looks great potted up in containers as thrillers around your seating and entertaining areas, or add accents to porch pots and balcony planters!

  • Rounded Tall Purple-Red Blooms
  • Grassy Mounds of Green Onion-Like Foliage
  • Easy to Grow Perennial Bulbs
  • Pollinator-Friendly & Unique Floral Design
  • Accents, Vertical Pops of Color, Garden Beds, Borders & Containers

#ProPlantTips for Care:

Allium loves the full sun and can also tolerate a touch of partial shade, especially in the hottest of its preferred growing zones. Plant in very enriched, well-drained soil and provide just enough water to get established. Fall-planted bulbs bring spring beauty, but they shy away from the summer sun. Prune back the flower heads back when they fade (or spray paint them funky colors for summer interest and dried décor) and leave the foliage in place to make food for the bulb. Once the leaves turn yellow you can trim them down cleanly at the ground level.

  • Most Color in Full Sun & Partial Shade Too
  • Rich Well-Drained Soil
  • Slower Growing Dwarf = Maintenance Free
  • Prune After Flowering For Possible Rebloom Later
  • Easy Care, Needs Little to No Pruning

Gladiator Allium adds unexpected form and color and saturated purple color to your garden beds and borders! Order a pack of bulbs from Nature Hills today! We'll ship your fall-planted bulbs at the proper planting time for your growing zone!

Buying Options for Plants

Nature Hills sells a large variety of plants with several options available. Plants are offered in both potted containers and as dormant bare root without soil. Here is a helpful resource to understand your options as you create a beautiful landscape with help from Nature Hills.

Ever wonder what a larger plant will mean for your landscape? Container Sizes are really all about the age of the plant!

Seasonally, Nature Hills offers hand selected, high quality bare root trees, shrubs and perennials. Bare root plants are sold by height from the top of the root system to the top of the plant. Plants may be taller than the height minimums.

  • Popular sizes of select trees are 1 foot, 2 feet, 3 feet, etc.
  • Popular sizes of select bare root plants is 1 foot, 18 inches, etc.

Nature Hills Container Size by Volume

Keep in mind, specific varieties and different growing conditions can affect the rate at which plants grow. Variations in size may occur.

Young Plants to 18 Months
Size Volume
2"x2"x3" Ranges from .18 to .21 dry quarts / .198 to .23 dry liters in volume
4.5" Container Equal to .65 dry quart / .72 dry liter in volume
Sprinter Pot Equal to .63 dry quart / .69 dry liter in volume
4" Container Ranges from .31 to .87 / .35 to .96 dry liter in volume
6" Container Equal to 1.4 dry quarts / 1.59 dry liters in volume
1 Quart Equal to 1 dry quart / 1.1 dry liter in volume
5.5" Container Equal to 1.89 of a dry quart / 2.08 dry liters in volume
4"x4"x5" Ranges from .8 to 1.1 dry quarts / .88 to 1.2 dry liters in volume
4"x4"x6" Ranges from 1.0 to 1.3 dry quarts / 1.1 to 1.41 dry liters in volume
4"x4"x9" Ranges from 1.1 to 2.1 dry quarts / 1.2 to 2.3 dry liters in volume
4"x4"x10" Ranges from 1.7 to 2.3 dry quart / 1.87 to 2.53 dry liters in volume
Plants 18 Months - 2.5 Years Old
Size Volume
2 Quart Equal to 2 dry quarts / 2.2 dry liters in volume
#1 Container Ranges from 2.26 to 3.73 dry quarts / 2.49 to 4.11 dry liters in volume
5"x5"x12" Equal to 3.5 to 4.3 dry quarts / 3.85 to 4.74 dry liters in volume
Plants 2 - 4 Years Old
Size Volume
#2 Container Ranges from 1.19 to 1.76 dry gallons / 5.24 to 7.75 dry liters in volume
#3 Container Ranges from 2.32 to 2.76 dry gallons / 10.22 to 12.16 dry liters in volume
Plants 3 - 5 Years Old
Size Volume
#5 Container Ranges from 2.92 to 4.62 dry gallons / 12.86 to 20.35 dry liters in volume
#6 Container Ranges from 5.25 to 6.01 dry gallons / 23.12 to 26.42 dry liters in volume
#7 Container Ranges from 5.98 to 6.08 dry gallons / 26.34 to 26.78 dry liters in volume

About Plant Sentry™

Plant Sentry is designed to protect both consumers and the nursery trade from invasive plant pests and diseases. Sites that display the Plant Sentry protection badge are protected from consumers buying and nurseries shipping material carrying invasive pests and diseases.

This proprietary eCommerce software prevents the shipment of a restricted plant to each state. The Plant Sentry system includes a shipment certification program. The Plant Sentry Compliance Officer works closely with and each nursery or fulfillment center to ensure only compliant plants are sold to customers.

Click Here to learn more

Plant Sentry


To obtain a more accurate shipment time-frame, simply enter your zip code in the “Find Your Growing Zone” box to the right. Our plants are grown all over the country and lead time on items may be different because of this. Once your order is placed, you will also receive the specific shipment time-frame information as part of your order confirmation. Once an item ships, you will receive shipment notification and tracking numbers, so you can follow along while your plant travels to your doorstep. We use FedEx, UPS, or USPS at our discretion.

Due to winter weather we have put a hold on shipping to the areas shown below in grey. You can still order now and we will ship the plant to you during an appropriate time for your zone.

*If you have found your zone already, it will be highlighted in the table below.
Color Zone Times
3 Spring 2019
4 Now
5 Now
6 Now
7 Now
8 Now
9 Now
10 Now
11 Now

Shipping Rates

At Nature Hills we handle, package and ship the products you order with the utmost care to ensure healthy delivery. Shipping and handling charges are calculated based on the tables below. Please note that some items include an additional handling surcharge, these will be noted on the item's product page.

From To S&H
0 - 19.99 24.99
20 - 49.99 29.99
50 - 69.99 34.99
70 - 99.99 39.99
100 - 129.99 44.99
130 - 149.99 48.99
150 - 150+ Approx 28%

Click here to see our full rates


Gladiator Allium Is Suited to Grow in Zones 4-9
Growing Zones 4-9
More Information
Brand Nature Hills' Choice
Botanical Name Allium 'Gladiator'
Type Annual
Mature Height 44 inches
Sun Exposure Full Sun
Soil Well Drained Soil
Moisture Medium
Growth Rate Fast
Foliage Color Green
Pollinator Friendly Yes
Pruning Time After Foliage Yellows
Spacing 12 - 16 inches