• Photo of Allium cepa (Allium cepas)

Plant Profile: Allium cepa

Taxonomy: Allium cepa

Names

Onion, Onions, Shallot, Shallots

  • Photo of Allium cepa (Allium cepas)

Phonetic Spelling:AL-ee-um see-puh

Genus:Allium

Species:cepa

Family:Amaryllidaceae

Shallots belong to the onion family and are originally from Asia. Their flavor is often described as a blend of onion and garlic. These resilient plants are not typically affected by deer or rabbits and can thrive in proximity to black walnut trees. Throughout the growing season, the bulbs produce multiple offsets. While the green tops can be harvested similarly to chives, doing so may hinder the development of the bulbs. The bulbs themselves are creamy, measuring 2 to 3 inches in length and 3 to 4 inches in width, with a flattened oval shape. Their outer skin can exhibit shades of red, purple, or brown.

To plant shallot bulbs, choose moist yet well-drained, fertile soil in a sunny location. They should be planted in spring, once the ground is workable, at a depth of ½ to 1 inch and spaced 6 inches apart. Harvesting should occur when at least two-thirds of the tops have withered. Use a garden fork to carefully dig up the shallots to avoid damage, and allow them to dry or "cure" for 2 to 3 weeks before use. For optimal air circulation, store the shallots in mesh bags or crates.

Allium cepa Feature Summary

Allium cepa Image Gallery

Tags

#rabbit resistant
#deer resistant
#vegetable garden
#vegetable
#edible
#cool season vegetable
#problem for cats
#problem for dogs
#problem for horses
#black walnut toxicity tolerant

Similar Plants

Allium cepa Feature Summary

Attributes
The bulb and tops are edible raw or cooked. However, the plant also has poisonous characteristics as noted in the "Poisonous to Humans" section of this record. Toxicity can depend on the age of the person or animal, the age of the plant, the part of the plant ingested, how much is ingested, whether the person or animal has sensitivities or allergies, whether it's eaten raw or cooked, and so forth. Consult with a medical professional for further details.
Fruit
Flowers wither and convert to bulblets
Flowers
Small clusters of white or pink star or bell-shaped flowers with exerted stamens.
6 petals/rays
Leaves
Long and green with a glaucous surface. Sheaths about 1/4 of the stem
Simple
Sheath
> 6 inches
< 1 inch
Stem
Hollow round stems
Green
Cream/Tan
Poisonous to Humans
Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting
N-propyl disulfide
Whole Plant Traits
Edible
Bulb
Vegetable
Arching
Erect
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Alkaline (>8.0)
Neutral (6.0-8.0)
Good Drainage
Moist
12 inches-3 feet
Less than 12 inches
Coastal
Mountains
Piedmont
5b
5a
6a
6b
7a
7b
8b
8a
9a
9b
10a
10b
High Organic Matter
Loam (Silt)
Sand
Landscape
Edible Garden
Mass Planting
Small groups
Deer
Rabbits
Black Walnut
Poisonous to Humans
Problem for Cats
Problem for Dogs
Problem for Horses

Allium cepa Attributes

Allium cepa: Country Or Region Of Origin

Central Asia

Allium cepa: Edibility

The bulb and tops are edible raw or cooked. However, the plant also has poisonous characteristics as noted in the "Poisonous to Humans" section of this record. Toxicity can depend on the age of the person or animal, the age of the plant, the part of the plant ingested, how much is ingested, whether the person or animal has sensitivities or allergies, whether it's eaten raw or cooked, and so forth. Consult with a medical professional for further details.

Allium cepa: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Allium cepa Fruit

Allium cepa: Fruit Description

Flowers wither and convert to bulblets

Allium cepa: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Allium cepa: Display/Harvest Time

Fall
Spring
Summer
Winter

Allium cepa Flowers

Allium cepa: Flower Description

Small clusters of white or pink star or bell-shaped flowers with exerted stamens.

Allium cepa: Flower Color

filter_vintage
White

Allium cepa: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Allium cepa: Flower Bloom Time

Winter
Spring
Summer
Fall

Allium cepa: Flower Petals

2-3 rays/petals
4-5 petals/rays
6 petals/rays
7 - 20 petals/rays
asymmetrical petals
Bracts
Colored Sepals
fused petals
more than 20 petals/rays
Tepals

Allium cepa: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Allium cepa Leaves

Allium cepa: Leaf Description

Long and green with a glaucous surface. Sheaths about 1/4 of the stem

Allium cepa: Leaf Color

spa
Green

Allium cepa: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Allium cepa: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Allium cepa: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Allium cepa: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Allium cepa: Hairs Present

No
Yes

Allium cepa: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Allium cepa: Leaf Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long-lasting
Showy

Allium cepa: Leaf Width

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Allium cepa Stem

Allium cepa: Stem Description

Hollow round stems

Allium cepa: Stem Color

grass
Cream/Tan
grass
Green

Allium cepa: Stem Is Aromatic

No
Yes

Allium cepa Poisonous to Humans

Allium cepa: Poison Symptoms

Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting

Allium cepa: Poison Toxic Principle

N-propyl disulfide

Allium cepa: Poison Severity

High
Low
Medium

Allium cepa: Causes Contact Dermatitis

No
Yes

Allium cepa Whole Plant Traits

Allium cepa: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Allium cepa: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Allium cepa: Maintenance

Low
Medium
High

Allium cepa Cultural Conditions

Allium cepa: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Allium cepa: Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Allium cepa: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Allium cepa: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Allium cepa: NC Region

Coastal
Mountains
Piedmont

Allium cepa: USDA Plant Hardiness Zone

thermostat
10a
thermostat
10b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b
thermostat
9a
thermostat
9b

Allium cepa: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Allium cepa Landscape

Allium cepa: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Allium cepa: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Allium cepa: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Allium cepa: Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy