Plant DetailShow Menu

Ornamental Onion Allium neapolitanum

Phonetic Spelling
AL-ee-um nee-ah-pol-ih-TAY-num
This plant has low severity poison characteristics.
See below
Description

Allium neapolitanum flowers in spring (May-June) and lasts 2-3 weeks. The plant is 15 inches tall with a loose umbel of white flowers. It reproduces by annual daughter bulb replacement and requires a warm (68 to 73 degrees F) to cool (35 to 50 degrees F) to warm (55 to 65 degrees F) annual thermoperiodic cycle. Allium neapolitanum tolerates summer drought, but keep it moist during growing season. Allium neapolitanum is normally not susceptible to animals. It is a bulbous herb with characteristic onion or garlic odor.

Season: Plant in fall, flowers in middle to late spring

Found in: Forest and natural areas, as native herbaceous plants; landscape as cultivated perennial; weedy in disturbed areas

Space: 4 in. apart, 9 bulbs per sq. ft.

Depth: 5 in. to base of the bulb

Organ: Tunicated bulb

Hardiness: Tender III - Injured at temperatures below 35 degrees F (2 degrees C) when planted

More information on Allium.

Cultivars:
Tags:
#white#sun#bulb#poisonous#full sun#drought tolerant#white flowers#spring bulb#woodland garden#border#full sunlight#plant in fall#Tunicated bulb#rock garden#ground cover
Cultivars:
Tags:
#white#sun#bulb#poisonous#full sun#drought tolerant#white flowers#spring bulb#woodland garden#border#full sunlight#plant in fall#Tunicated bulb#rock garden#ground cover
  • Attributes:
    Genus:
    Allium
    Species:
    neapolitanum
    Family:
    Alliaceae
    Country Or Region Of Origin:
    Southern Europe and northern Africa
    Particularly Resistant To (Insects/Diseases/Other Problems):
    normally not susceptible to animals, drought
    Edibility:
    EDIBLE PARTS: Leaves, bulbs, and bulblets. Field garlic (A. vineale) is too strong for most tastes. HARVEST TIME: Only collect plants from areas you know have NOT been treated with pesticides. Gather leaves during spring and fall. Gather bulbs in the second year when they are large enough to use like cultivated onions. Flower stem bulblets are collected during the summer. SAFE HANDLING PROCEDURES: Wash leaves, bulbs and bulblets in warm water to remove dirt and debris. Do not use dish detergent or any type of sanitizer. These products can leave a residue. Use as domestic onions, for seasoning, or raw in salads. Bulbs can be used raw, boiled, pickled, or for seasoning. Their strong taste can be reduced by parboiling and discarding the water. To freeze onions or garlic, one should coarsely chop, blanch two minutes, drain, pat dry, and place them into plastic bags. The bulbs can also be dried for use as seasoning. Use flower bulbs to flavor soup or for pickling.
  • Whole Plant Traits:
    Plant Type:
    Bulb
    Poisonous
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Available Space To Plant:
    Less than 12 inches
  • Flowers:
    Flower Color:
    White
    Flower Inflorescence:
    Umbel
    Flower Value To Gardener:
    Fragrant
    Flower Bloom Time:
    Spring
    Summer
    Flower Description:
    Flower blooms in the middle to late spring (May to June). Flowers are small, 6-parted, and in a cluster at the top of a naked stem. The plant smells of garlic or onion. It is 15 inches tall with a loose umbel of white flowers.
  • Leaves:
    Leaf Value To Gardener:
    Fragrant
    Hairs Present:
    No
    Leaf Description:
    Leaves are long, slender, flat or cylindrical and hollow. The plant smells of garlic or onion.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Woodland
    Landscape Theme:
    Drought Tolerant Garden
    Rock Garden
    Design Feature:
    Border
    Resistance To Challenges:
    Drought
    Problems:
    Poisonous
    Weedy
  • Poison:
    Poison Severity:
    Low
    Poison Symptoms:
    CAUSES ONLY LOW TOXICITY IF EATEN. Poisonous through ingestion. Symptoms may include nausea, vomiting, and diarrhea. (Poison parts: All parts; bulbs, bulblets, flowers, and stems)
    Poison Toxic Principle:
    Sulfides
    Causes Contact Dermatitis:
    No
    Poison Part:
    Bark
    Flowers
    Fruits
    Leaves
    Roots
    Seeds
    Stems