Naples Onion, White Garlic
Allium neapolitanum

Family: Alliaceae
Genus: Allium (AL-ee-um) (Info)
Species: neapolitanum (nee-uh-pol-ih-TAY-num) (Info)
Synonym:Allium cowanii

Category:

Bulbs

Height:

12-18 in. (30-45 cm)

Spacing:

6-9 in. (15-22 cm)

Hardiness:

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Danger:

N/A

Bloom Color:

White/Near White

Bloom Time:

Late Winter/Early Spring

Mid Spring

Foliage:

Deciduous

Other details:

Drought-tolerant; suitable for xeriscaping

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Regional

This plant has been said to grow in the following regions:

Garberville, California

North Auburn, California

Santa Barbara, California

Cordele, Georgia

Washington, Illinois

Olathe, Kansas

Southold, New York

Barto, Pennsylvania

Florence, South Carolina

San Marcos, Texas

Magna, Utah

show all

Gardeners' Notes:

2
positives
0
neutrals
1
negative
RatingContent
Positive

On Jul 9, 2013, ryguy319 from Owosso, MI (Zone 5b) wrote:

According to some suppliers this plant is hardy from as low as zone 3.

Positive

On May 17, 2010, weedsfree from Magna, UT (Zone 7a) wrote:

I have not had any problems with this one. Full sun or shade, which I have tried this year, they still bloom. They multiply the fastest of my Alliums. Hardy to at least zone 4.

Negative

On Jun 24, 2007, dicentra63 from West Valley City, UT (Zone 6b) wrote:

I've planted these in both sun and shade and got some foliage and dozens of little bulbs but no blooms.

This bulb is the white component of the "Mountain Bells Mix" from Breck's.