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Hard Neck Garlic

Allium sativum (AL-ee-um sa-TEE-vum oh-fee-oh-SKOR-oh-don)

Family: Amaryllidaceae Non-native Herbaceous (1-3 ft)

Hardeck Garlic is a perennial bulb in the amaryllis family (Amaryllidaceae) producing a popular edible vegetable garden plant. It is closely related to onions, shallots and leeks. Within the Hardneck varieties, there are the ‘rocamboles’, whose cloves alternate large and small, and the ‘continental’ types, whose cloves are mostly uniform in size. Rocamboles are typically easier to peel and have the most pungent garlic flavor but do not store as long as continental types. Separate individual cloves from the bulb and plant 2-3 inches deep and 6-8 inches apart. In NC plant from late Oct. to Nov. and possibly through Dec in the more southern areas for a May to June harvest time. It needs at least 4-6 weeks to get established before the ground freezes. Plant in loose fertile well-drained soil in full sun and mulch to help prevent weed competition. Cut back on watering before harvest time to prevent bulb rot. The flower stem (scape) should be removed before blooming and is edible raw or cooked. Harvest garlic when about half of the leaves have started turning brown. Garlic needs to cure after digging in a warm dry place out of the sun. Once the leaves have completely dried you can remove the leaves, roots and outer wraps and store in a dry cool area but do not refrigerate. Garlic is grown both commercially and in the home edible garden. Insects, Diseases, and Other Plant Problems: No significant problems. Bulb rot can occur in too wet soil. Bulb mites can occur. VIDEO Created by Elisabeth Meyer for "Edibles, Bulbs, and Houseplants," a plant identification course developed in partnership with Longwood Gardens. More information on Allium sativum .

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 58 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (1-3 ft) Optimal soil pH Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Often confused with Allium sativum var. sativum
Fills a similar niche Allium ampeloprasum Allium sativum Allium sativum var. sativum

Full plant profile

Growing Conditions
Plant type
Bulb; Cool Season Vegetable; Edible; Perennial; Vegetable
Life cycle
Bulb; Perennial
USDA zones
4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Light
Full sun (6 or more hours of direct sunlight a day)
Soil texture
Clay; High Organic Matter; Loam (Silt); Sand
Soil pH
Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist | Occasionally Dry
Available space
Less than 12 inches; 12 inches-3 feet
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 1 ft. 6 in. - 2 ft. 0 in. | Width: 0 ft. 6 in. - 0 ft. 9 in.
Growth rate
Medium
Maintenance
Medium
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Habit / form
Erect
Texture
Medium
Leaf color
Gray/Silver; Green
Leaf type
Simple
Leaf arrangement
Rosulate
Leaf shape
Linear
Leaf margin
Entire
Leaf value
Fragrant
Leaf size
> 6 inches long, < 1 inch wide
Hairs present
No
Leaf detail
Flat linear basal gray-green upright leaves.
Flower color
Pink; White
Flower form
Umbel
Flower shape
Star
Flower detail
White to pinkish 6-parted star-shaped flowers in clusters. Some plants produce bulblets which then produce flowers.
Bloom time
Spring
Fruit type
Capsule
Stem color
Green
Stem detail
Round green scape curved or twisted at the top.
Wildlife & Ecology
Native status
Non-native
Origin
Middle East Asia
Food & Medicine
Fruit type
Capsule

Edibility

Bulbs and scapes are edible and can be eaten 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.

Landscape Use
Landscape theme
Edible Garden
Design feature
Mass Planting; Small groups
Garden tags
#vegetable garden #edible bulbs #black walnut toxicity tolerant #deer resistant #cool season vegetable #vegetable #mass planting #edible fruits #problem for dogs #problem for horses #problem for cats #full sun tolerant
Problems & Resistance
Insect problems
Bulb Mites; Insect and Related Pests of Vegetables
Problems
Problem for Cats; Problem for Dogs; Problem for Horses
Resistant to
Black Walnut; Deer
Propagation
Division
Poison severity
Low
Poison parts
Flowers; Fruits; Leaves; Roots
Poison symptoms
Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting
Toxic principle
N-propyl disulfide
Contact dermatitis
No
Toxicity summary
Low severity poison; parts: Flowers; Fruits; Leaves; Roots

Planted at Hunnicutt

Nobody’s planted this one yet.