When to Plant Garlic Perfectly

Written by
Michael Sullivan
Reviewed by
Prof. Martin Thorne, Ph.D.Fall is the best time to plant garlic when the soil temperature reaches 50°F (10°C).
Plant 2-4 inches deep based on how much frost is in your area.
Make sure your soil is 6.0-7.0 pH and enrich it with compost before planting.
Plant large, healthy cloves free of disease. You may take these into your fridge for 4 weeks before planting in the spring.
Once planted, apply straw mulch to help keep the soil temperatures and moisture in check.
Harvest garlic when the lower leaves have browned out but you have 5-6 green leaves remaining on the plant.
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Garlic is a superstar in both your kitchen and your garden, and understanding when to plant garlic is the key! This super plant brings great health benefits. It's rich in antioxidants, which help elevate immunity. Garlic is also beneficial for heart health due to its circulatory benefits. Growing your own plants saves money, as it costs only a fraction of the prices at stores.
This guide concentrates on planting garlic at the right time. We include, to the best of our knowledge, the key steps necessary for successful growth. You'll discover tried-and-true soil functions. We disclose clever harvesting methods. Utilize these practical tips for a fruitful harvest. Let's write a simple process together.
Health Benefits of Garlic
When you crush or chop cloves, garlic's allicin is activated. This compound enhances your immune system by increasing the number of white blood cells that attack viruses and bacteria. Allicin can also lessen the severity of a cold. I have personally experienced fewer illnesses since increasing the amount of raw garlic in my meals.
Garlic is incredibly beneficial for your heart. It reduces cholesterol by blocking the liver enzymes that manufacture it. Garlic also dilates blood vessels, improving circulation. All of this lowers blood pressure naturally. Studies reveal that continuing use significantly decreases the risk of heart disease.
Garlic contains antioxidants that combat inflammation throughout your body. These antioxidants neutralize free radicals. This way, cellular damage and aging happen more slowly. In turn, when inflammation levels are lower, you will experience less joint pain. My arthritis improved after I added garlic to my daily diet.
Raw garlic boasts higher nutrient content than cooked varieties. Heat also destroys certain beneficial compounds. To get the maximum health benefit, use fresh garlic after cooking. Suppose cooking, don't add garlic until the end. I even mince garlic into the cooled soup.
Saving Seed Garlic
Select seed garlic from your largest, healthiest bulbs. Choose cloves that are rock-hard and free of soft spots & blemishes. Size matters because the larger the clove, the stronger the plant. I examine each one closely under bright light. I discard any with dark streaks or mold.
Keep your seed garlic in a cool, dry place. The ideal storage temperature range is 50-60°F, with humidity levels of 60-70%. I store mine in mesh bags in my cellar, allowing for good air circulation, and I avoid using plastic bags, which can trap moisture and cause mold. Keeping your garlic properly stored will reduce the chance of sprouting before it's time to plant.
Replanting garlic every year strengthens your garlic strain. Each time it's replanted, it's better adapted to your soil and climate. And that is how natural selection also builds disease resistance. My garlic has thrived after wet springs that used to ruin their crops. A genetic adaptation after all this time can make the plants more resilient.
Each month, you should check stored garlic for any spoilage signs. These can include mold, soft spots, or shriveled cloves, as well as any sour or musty smells. Discard spoiled bulbs immediately. Once, I lost a whole batch by munching on a couple of early signs of mold. Prevention lives on in your seed stock.
Bulb Selection
- Critical Criteria: Choose bulbs measuring 4-6cm diameter with tight, unbroken papery skin
- Visual Inspection: Reject any bulbs showing mold, soft spots, or sprouting signs
- Source Preference: Select from disease-free plants with strongest growth history
Curing Process
- Duration: Hang in bundles for 2-3 weeks in shaded, airy location
- Environment: Maintain 60-70°F (15-21°C) with 45-55% humidity
- Completion Signs: Stems become brittle and skins turn papery
Storage Conditions
- Temperature Range: 50-60°F (10-15°C) ideal for longevity
- Humidity Control: Below 60% to prevent mold formation
- Light Exposure: Complete darkness to inhibit sprouting
Pre-Planting Maintenance
- Duration: Store 3-6 months before fall replanting
- Periodic Checks: Inspect monthly for sprouting or decay signs
- Preparation: Separate cloves 1-2 days before planting, keeping skins intact
Pest Prevention
- Container Choice: Use mesh bags or breathable containers to deter insects
- Natural Deterrents: Place bay leaves or diatomaceous earth nearby
- Isolation Method: Store away from other produce to avoid cross-infestation
Using Homegrown Garlic Creatively
Garlic grown in your backyard offers unique flavor profiles at every step. Fresh garlic cloves have a spicy, pungent, and delicious taste. Roasted garlic is sweet and creamy caramelized goodness used for spreads. Garlic preserved in oil mellows beautifully for sweet, nuanced flavors in sauces. I use them all, depending on the type of flavor I need for a dish.
Keep your harvest fresh with these simple recipes that use just the right amounts! You can make garlic salt by mixing 2 cups of salt with 2 peeled bulbs and baking at 200°F for 2 hours. You can freeze a garlic puree by simmering 3 cups of cloves until they are soft, blending them with ½ cup of olive oil, and then freezing the mixture in an ice tray. Using these two ways, you can maintain the flavor for use throughout the year.
Experiment with some unexpected combinations to excite your taste buds. One difference I tried is adding roasted garlic to dark chocolate brownies to add a resin-y sweetness. Another was soaking cloves in vodka for a spiced-up Bloody Mary cocktail. Additionally, tossing young scapes into spring salads with strawberries is a tasty treat. My personal favorite is garlic honey drizzled over vanilla ice cream, making for a sweet-salty dessert.
Utilize seasonal availability by using food that can be grown in your foreign climate. The tender young leaves of spring are used in my pestos, summer scapes brighten your grilled skewered vegetables, and bulb harvests in late summer keep them cooking all year round. I dry braids of hardneck varieties to use for winter stews and roasts.
Fresh Applications
- Salads: Mince 1-2 cloves per serving for vinaigrettes; young leaves add mild flavor
- Stir-fries: Slice cloves thinly; sauté with vegetables during last 2 minutes of cooking
- Infusions: Steep crushed cloves in olive oil for 3 weeks at room temperature
Preservation Techniques
- Garlic Salt: Blend 2 cups salt with 2 peeled bulbs; bake at 200°F (93°C) for 2 hours
- Roasted Garlic: Cut bulb tops; drizzle with oil, wrap in foil, bake at 450°F (232°C) for 40 minutes
- Frozen Puree: Simmer peeled cloves until soft; blend with olive oil, freeze in ice cube trays
Scape Utilization
- Pesto: Blend 1 cup chopped scapes with ½ cup nuts, ½ cup oil, and ¼ cup cheese
- Pickling: Brine scapes in vinegar solution with dill and peppercorns for 4 weeks
- Grilled: Brush with oil; char on high heat for 2 minutes per side as appetizer
Unconventional Uses
- Desserts: Roasted garlic adds caramel notes to dark chocolate brownies
- Cocktails: Infuse vodka with cloves for Bloody Mary variations
- Confit: Slow-cook peeled cloves in oil at 180°F (82°C) for 2 hours
Medicinal Preparations
- Honey Infusion: Combine crushed cloves with raw honey; ferment for 1 month as immune tonic
- Topical Balm: Mix garlic oil with beeswax for natural antibacterial skin treatment
- Respiratory Aid: Steep chopped garlic in hot water with lemon and ginger for congestion relief
Soil Preparation Essentials
Garlic does best in loamy soil. Soil that has a balance between sand, silt, and clay: 40% sand, 40% silt, 20% clay. This composition will hold moisture without saturating the roots. I test soil texture by squeezing a small amount of wet soil; it forms a loose ball that falls apart easily.
You can check the soil pH easily with a simple test kit purchased from a garden center. Garlic thrives in soil with a range of 6.0-7.0 pH for optimum nutrient uptake. If your soil pH is less than 6.0, you can add garden lime (5-10 lbs per 100 square feet) to raise the soil pH. If your soil pH tests at greater than 7.0 (alkaline), add elemental sulfur.
Drainage averts bulb rot. Dig a hole 12 inches deep and fill it with water after planting. If it drains more slowly than 1 inch per hour, make amendments with either perlite or coarse sand. I improved my clay soils by mixing in 30% perlite before planting.
The best time to prepare the soil is 4-6 weeks before planting garlic, allowing it to incorporate well. I work compost into my beds in early fall, when the garlic is grown in late September or early October. This approach, time-wise, allows the compost, nutrients, and other elements time to stabilize before planting, which in turn helps with strong root establishment.
Planting Garlic Step by Step
Start with selecting *plump, firm cloves* from your best bulbs. Carefully break apart the bulbs, keeping the papery skins intact. Discard any damaged or small cloves. I always select the largest cloves for this reason. They provide larger bulbs. Choosing this way naturally promotes vigorous growth.
When planting, the pointed end goes up and the root plate goes down. Think of the tip as a miniature satellite dish receiving rays from the sun. Use a dibber for small backyards and a trowel for larger beds. Make holes 2-3" deep in mildly cool climates, or double that in colder regions.
Space plants 6 inches apart in all directions. For raised beds, use hexagonal patterns to maximize yield. For row gardens, space 12 inches between rows. Plant in the cool of fall before the ground freezes. Time your planting to fall 4 weeks before your first hard frost.
After planting, water lightly to settle the soil around the cloves. Apply straw mulch right away for insulation. Apply `4-6 inches` to moderate soil temperature. In extremely cold conditions, add row covers. I check the soil moisture once a week, but I avoid overwatering to prevent root rot.
Clove Preparation
- Selection Criteria: Choose large, firm cloves with intact papery skins from disease-free bulbs
- Treatment: Optional soak in baking soda and fish emulsion solution for disease prevention
- Timing: Prepare cloves 1-2 days before planting while keeping skins intact
Soil Preparation
- Depth Requirement: Loosen soil to minimum 8 inch (20 cm) depth for root development
- Amendment: Incorporate compost at 3-4 inch (7.6-10.2 cm) depth before planting
- Drainage Test: Water should absorb within 10 minutes to prevent bulb rot
Planting Technique
- Orientation: Place cloves with pointed end upward and root plate downward
- Tool Use: Create holes using dibber or trowel for consistent 2-3 inch (5-7.6 cm) depth
- Spacing: Maintain 6 inch (15 cm) between cloves in all directions
Depth Adjustment
- Standard Depth: 2 inch (5 cm) for mild climates
- Cold Regions: 4 inch (10 cm) to protect from frost heave
- Covering: Gently backfill without compacting soil around cloves
Post-Planting Care
- Watering: Light irrigation immediately after planting to settle soil
- Mulching: Apply 4-6 inch (10-15 cm) straw layer for insulation
- Protection: Install row covers if temperatures drop below 20°F (-6°C)
Best Time to Plant Garlic
Planting calendars depend on your USDA planting zone. In USDA zones 3-7, fall planting is optimal in September and November. For USDA zones 8-10, spring is ideal for planting, with the earliest dates typically occurring in February. In my Zone 5 garden, I plant in mid-October to establish roots before winter arrives.
Vernalization is the need for a period of cold temperature below 40°F (4°C). With fall-planted cloves, the cold naturally occurs when winter arrives. With spring-planted cloves, you must refrigerate them for 4-8 weeks before planting the bulbs. Without the cold period, hardneck varieties will not produce quality bulbs.
Take soil temperature with a probe thermometer at a depth of 4 inches. An ideal temperature for fall planting is 50°F (10°C); for a spring planting, the temperature needs to be above 35°F (2°C). I take soil temperature readings at 9:00 AM for three consecutive days to ensure it remains stable.
Mediterranean climates don't have freezing temperatures because they have mild winters, plants instead from November to December. Tropical areas avoid the summer heat and plant late fall, winter, into the coolest months. The use of A/C can induce vernalization in some cases. Adjust the plant dates to match your location and local microclimates.
5 Common Myths
Garlic needs sun all day to grow properly
While garlic prefers 6-8 hours of sun, too much sun in hot climates causes bolting and smaller bulbs. In USDA hardiness zones 7-10, some afternoon shade provides heat protection and actually improves garlic yield. Morning sun with afternoon shade keeps the soil temperature more favorable for bulb root establishment.
Always plant deeper to get bigger bulbs
If planting deeper than 4 inches (10 cm), germination will be delayed and energy will be wasted for stem growth instead of forming bigger bulbs. The best planting depth is a balance between the depth for frost protection and an efficient sprouting depth: 2-3 inches (5-7.6 cm.) for mild climates and 3-4 inches (7.6-10 cm.) in cold environments. In soils with heavy clay - shallow planting can aggravate heaving.
In its growing season, garlic require frequent watering
It is only crucial to assure consistent moisture for the spring bulb formation; watering too much while garlic is dormant creates rot. An established garlic plant requires only 1 inch (2.5 cm) of water weekly during its growing season; however, it will need to dry completely it in the last 3 weeks before harvest for proper curing. When garlic is overwatered, nutrients are leached and fungal diseases have an opportunity to develop.
All garlic varieties will grow well in any climate
Softneck types perform best in the warmer zones 5 through 9 as they do not have the hardiness to survive northern winters, while hardneck garlic grows best when they sub-40°F (4C) vernalize to bulb. Asian garlic cultivars tolerate humid climates, but do not do well in arid climates. It is advantageous to choose garlic varieties, rather genetic types that are adapted to the region, otherwise, garlic plants may grow off to stunted growth and may not develop proper clove size.
Compared to organic methods, chemical fertilizers produce larger bulbs
Synthetic nitrogen promotes quick growth in tops at the expense of root growth, leading to bulbs that store poorly or have thin wrappers. Organic amendments, such as composted manure, increase the slow-release of nutrients to promote balanced growth and higher allicin levels. Trials also indicate similar yields with organic methods, while they also contribute to improved soil health over time.
Conclusion
Cultivating garlic at home is shockingly easy and rewarding. You have tasty bulbs loaded with health benefits. It takes very little work, once you get the hang of it. Most of my garden crops require more work than growing garlic, and I love garlic because it can be neglected and still produce great results.
Here are three key success factors for your harvest. The right planting timing results in proper root growth. Soil preparation helps avoid disease and improves growth. Adequate storage preserves the usability of garlic for many months. If you can get these factors right, then every year you will be swimming in garlic.
To get started, choose one garlic variety for your first year. Softnecks are easier for a first try. Once you have success, try harder to grow hardneck varieties or neighboring exotic garlics. I started with California Early and now grow five varieties, each with its own unique taste.
There is nothing like the joy of unloading your own garlic. The flavors from homegrown bulbs are more complex than their supermarket counterparts. You have complete control over the growing conditions, and therefore, do not have to worry about any chemicals. When you bite into the first clove of your harvest, it's all worth it. Experience the flavor yourself next season.
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Frequently Asked Questions
What is the optimal time to plant garlic?
Plant garlic in fall when soil temperatures drop to 50°F (10°C), typically 4-6 weeks before ground freezes. In warmer climates, plant in late winter when soil becomes workable. Fall planting allows roots to establish before winter dormancy.
Which plants shouldn't grow near garlic?
Avoid planting near legumes like peas and beans, as garlic inhibits their growth. Also keep away from asparagus, parsley, and strawberries. Instead, pair with beneficial companions:
- Tomatoes (deters spider mites)
- Carrots (repels carrot flies)
- Roses (prevents black spot fungus)
Can garlic survive winter underground?
Hardneck varieties tolerate freezing temperatures when planted at proper depth (3-4 inches). Mulch with 6 inches of straw after planting. Softneck types need milder winters. In zones below 3, use heavy mulch or plant in spring with pre-chilled cloves.
How does coffee grounds affect garlic?
Coffee grounds moderately acidify soil and add nitrogen. Use sparingly in alkaline soils, but avoid in acidic conditions. Mix grounds into compost rather than applying directly. Key considerations:
- Apply only ¼ inch layer monthly
- Balance with crushed eggshells for calcium
- Never use on seedlings
What makes garlic challenging to grow?
Garlic requires specific conditions but isn't difficult with proper knowledge. Critical factors include precise planting depth, vernalization period, and dry soil during bulb formation. Overwatering causes rot, while insufficient cold exposure prevents bulbing in hardneck varieties.
How long can garlic stay unharvested?
Leaving garlic 1-2 extra weeks causes cloves to burst through skins, reducing storage life. Beyond two years, bulbs decay and attract pests. Always harvest when:
- Lower ⅓ of leaves turn brown
- 5-6 upper leaves remain green
- Bulb wrappers feel papery
Can you eat garlic plant leaves?
Young green leaves (scapes) are edible with mild garlic flavor. Harvest when curly and tender. Use like scallions in stir-fries or pesto. Avoid taking more than ⅓ of leaves, as this reduces bulb size. Mature leaves become fibrous.
Do supermarket garlic cloves grow well?
Grocery garlic often lacks cold-hardiness genes and may carry diseases. Choose organic bulbs from local growers instead. For successful growth:
- Select largest, firmest cloves
- Pre-chill non-hardy varieties
- Treat with fungicide before planting
How much spacing does garlic require?
Space cloves 6 inches apart in all directions. Rows should be 12 inches apart for proper air circulation. In raised beds, hexagonal spacing maximizes yield. Overcrowding causes small bulbs and disease susceptibility.
Which pests does garlic naturally repel?
Garlic deters aphids, spider mites, and Japanese beetles. Its sulfur compounds mask host plant scents. Plant near vulnerable crops like:
- Peppers (against aphids)
- Fruit trees (confuses codling moths)
- Cabbages (repels cabbage worms)