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How to Grow Garlic

Reviewed by MyLocalPlanting Editorial Team Updated Sources
Garlic (Allium sativum)

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Supplies You'll Need

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Plant Overview

Scientific Name Allium sativum
Category vegetable
Type Bulb
Days to Maturity 240 days
Starting Method Plant Bulbs (Fall)

Growing Requirements

Sun

Full Sun (6+ hours)

Water

Low to Moderate

Spacing

6" apart

Depth

2" deep

Height

12-24"

Germination

8-21 days

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Common Garlic Varieties

Popular cultivars to look for at your local nursery or seed supplier.

Rocambole (Spanish Roja)

hardneck 240d

Classic hardneck with rich, complex flavor; easy to peel and widely loved by chefs.

Porcelain (Music)

hardneck 240d

Large hardneck cloves with bold, lingering heat; one of the most productive varieties.

Softneck (Inchelium Red)

softneck 240d

Excellent keeper lasting 9–12 months; mild flavor makes it ideal for braiding.

Elephant Garlic

elephant

Technically a leek relative; mild, subtle flavor in very large cloves — great roasted whole.

Purple Stripe (Metechi)

hardneck 240d

Beautiful purple-streaked cloves with rich, complex flavor; stores well into winter.

Days-to-maturity figures are approximate and vary by climate and growing conditions.

Common Garlic Problems

What to watch for — and how to fix it before it spreads.

Pests

Onion Thrips

Rasp leaf surfaces leaving silver streaking; reduce photosynthesis and yield.

Fix:

Apply spinosad; use reflective mulch; water consistently to avoid plant stress.

Bulb Mite

Microscopic mites tunnel into cloves, causing rot and poor germination.

Fix:

Inspect and discard soft cloves at planting; dip seed garlic in 30-second hot water treatment (130°F).

Diseases

White Rot (Sclerotium)

Fluffy white growth at the base of bulbs with tiny black sclerotia; soil-persisting fungus.

Fix:

Do not plant garlic (or onions/leeks) in affected beds for 20+ years; there is no cure.

Botrytis Leaf Blight

White elliptical spots on leaves that coalesce in cool, wet weather; defoliation reduces bulb size.

Fix:

Apply copper fungicide; improve airflow; harvest promptly when scapes fall.

Common Mistakes

Planting in spring

Garlic needs cold vernalization to form multiple cloves; spring-planted garlic produces a single undivided bulb.

Fix:

Plant hardneck garlic in fall (4–6 weeks before ground freezes) for harvest the following July.

Not removing hardneck scapes

Scapes left on the plant divert energy from bulb development, reducing final size by up to 30%.

Fix:

Cut scapes when they make one curl (curl has just completed); eat scapes fresh or freeze them.

Harvesting too early or too late

Too-early garlic has undeveloped wrappers; too-late bulbs burst open and store poorly.

Fix:

Harvest when 5–6 bottom leaves have turned brown; each leaf = one wrapper layer on the bulb.

Seed Saving Guide

Vegetative propagation

Propagate vegetatively, not by seed

Garlic is propagated by planting individual cloves — save the largest cloves from your harvest for replanting.

Select the largest, healthiest bulbs from your harvest as your "seed garlic" for the next growing season.

Raised Bed Planting Guides

A 4×8 bed fits 4 per sq ft of Garlic. See plant counts, spacing grids, and companion pairings for every bed size →

Garlic Planting Calendar by Zone

Garlic Planting Calendar by State

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Frequently Asked Questions

When should I plant Garlic? +

Plant Garlic bulbs in fall, right around your area's first fall frost, so roots establish before the ground freezes. Use the search on this page to find exact dates for your location.

How long does Garlic take to grow? +

Garlic typically matures in about 240 days from planting. Exact timing varies by variety, soil conditions, and local climate.

Should I start Garlic indoors or direct sow? +

Garlic is planted as dormant bulbs directly in the garden — no indoor seed starting needed. Plant at the appropriate time based on your local frost dates.

How much sun does Garlic need? +

Garlic requires full sun (6+ hours) to thrive.

How far apart should I plant Garlic? +

Space Garlic plants 6 inches apart to allow adequate airflow and root development.

How much water does Garlic need? +

Garlic has low to moderate water needs. Consistent moisture is important especially during germination and early growth.

Can you save seeds from Garlic? +

Garlic is not typically propagated by seed. Garlic is propagated by planting individual cloves — save the largest cloves from your harvest for replanting. Select the largest, healthiest bulbs from your harvest as your "seed garlic" for the next growing season.

About Garlic

Plant in fall for summer harvest. Hardneck varieties produce edible scapes in spring.

Expect your Garlic to be ready for harvest in approximately 240 days from planting.

Use the search above or browse by zone or state to find the perfect planting dates for your location.