Garlic

(Allium sativum)

Basic Identification

Common Names
Garlic
Common garlic
Cultivated garlic

Botanical Name
Allium sativum

Plant Family
Amaryllidaceae (Onion family)

Parts Used
• Bulb (primary medicinal part, composed of cloves)
• Fresh cloves (most potent form)
• Aged preparations (used in some clinical contexts)

Habitat and Native Range

Garlic is believed to have originated in Central Asia and has been cultivated for thousands of years. It is now grown worldwide in a wide range of climates.

It grows best in:
• well-drained, fertile soil
• full sun
• cultivated garden beds
• temperate climates with seasonal variation

Garlic is not typically found growing wild in its true cultivated form. It is widely grown commercially for both culinary and medicinal use and is considered one of the most important medicinal plants globally.

Overview

Garlic is one of the most widely used and respected herbs in both traditional and modern herbal medicine. Known for its strong and direct action, it is primarily used for supporting the immune system, improving circulation, and addressing infections.

Unlike gentler herbs, garlic is potent and active, working quickly to influence the body’s defenses and internal environment. It is especially valuable in situations where there is infection, stagnation, or buildup—helping to move, clear, and protect.

Garlic has been used across cultures for thousands of years and remains a foundational remedy in both home and clinical practice, particularly for immune support and cardiovascular health.

Basic Uses

Garlic is commonly used for:

• Immune support and infection (bacterial, viral, fungal)
• Colds, flu, and respiratory congestion
• Poor circulation and cardiovascular support
• High cholesterol and blood pressure support
• Digestive stagnation and microbial imbalance
• General antimicrobial and protective support

Botanical Description / Morphology

Growth Habit
Bulb-forming perennial (commonly grown as an annual), typically 1–2 feet tall, with upright growth arising from an underground bulb.

Stem
• Erect, smooth, and green
• Cylindrical and relatively soft
• May produce a flowering stalk (scape) in some varieties

Leaves
Arrangement: Basal and alternate along the stem
Shape: Long, narrow, flat or slightly folded blades
Margin: Smooth
Surface: Smooth, with a waxy coating

Venation
Parallel venation typical of monocots

Flowers
Type: Umbel (cluster) at the top of a flowering stalk (scape)
Color: White to pinkish or pale purple
Structure: Small individual flowers grouped in a rounded cluster

Note: Many cultivated garlic varieties produce few viable seeds and instead reproduce through bulbs.

Bulb (Primary Feature)
• Composed of multiple cloves enclosed in a papery outer skin
• Color ranges from white to purple-streaked
• Strong, characteristic pungent odor when crushed

Roots
• Shallow, fibrous root system
• Extends from the base of the bulb

Key Identifying Features

• Underground bulb made up of distinct cloves
• Strong, pungent garlic odor when crushed
• Long, flat, blade-like leaves
• Upright growth from a single bulb base

Similar Species / Lookalikes

• Wild onion (Allium species)
→ Similar appearance but typically smaller bulbs and milder odor

• Toxic lookalikes (in wild settings, e.g., death camas) ⚠️
→ Lack the characteristic garlic smell; odor is the key identifying factor

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