
Photo Bell Oaks
It’s garlic planting time for many of us again and many growers are searching my site for information. Here are quick links to all of my many garlic posts over the years. I’ve added in ones from the past couple of years, since I wrote my post Garlic Almanac and Phenotypic Plasticity in May 2021. Those are Success with Storing Garlic, the timely Planting garlic and garlic scallions and my updated slideshow in the post My Garlic Slideshow.
After the links follows seasonal details on planting

Much about garlic is to be found in my Alliums for the Month Series:
- Plant Garlic (Alliums for November), including pre-plant clove treatments
- Free Trapped Garlic Shoots (Alliums for December)
- Plant garlic scallions from softneck varieties (Alliums for February)
- Garlic Scallions (Alliums for March). Also harvest in April and May
- Garlic Scapes (Alliums for May)
- Harvesting Garlic (Alliums for June)
- Snip and Sort Garlic (Alliums for July)
- Move Stored Garlic (Alliums for September)
- Everything You Need to Know About Garlic includes lots of these links and also a discussion on choosing which bulbs to replant from.
- Sustainable Farming Practices slideshow, garlic planting, annual crop review

Photo Valerie Renwick
Other posts about garlic, starting with planting:
- Planting garlic and garlic scallions
- Garlic Planting and Freeing Trapped Shoots
- Winter radishes, planting garlic.
- Harbinger weeds of spring, and early garlic scallions
- Garlic scapes! Three weeks to bulb harvest!
- Too much rain! But garlic scapes to cheer us up.
- Garlic scapes
- Garlic scapes, upcoming events, hoophouse seed crops
- Garlic Almanac and Phenotypic Plasticity (how a garlic variety adapts to a specific location)
- Garlic signs of maturity
- Garlic Harvest step by Step
- Harvesting Garlic
- Garlic Harvest
- Garlic harvest, Intercropping, Summer lettuce,
- Garlic harvest finished, fall crop planning, tomato bug heads-up
- Garlic drying and curing methods
- Snipping, Sorting and Storing Garlic
- Success with Storing Garlic
- And to sum it all up see My Garlic Slideshow, updated in 2025.

For a valuable second opinion, see Margaret Roach (who grows in Massachusetts) in A Way to Garden
- how to grow garlic, a q&a with filaree farm
- Growing and storing a year of garlic
- The hardneck bonus: garlic scapes
- The Tricky Matter of When to Harvest Garlic
- Garlic harvest and curing details

When to Plant Garlic
Use a soil thermometer! Flag its location so you don’t lose track of it! Here in zone 7a, we plant in early November when the soil temperature at 4″ (10 cm) deep is 50°F (10°C) at 9 am. If the fall is unusually warm, we wait a week. Instructions from Texas A&M say less than 85°F (29°C) at 2″ (5 cm) deep. In New Hampshire, mid-October is the time. The guideline for areas with cold winters is 2-3 weeks after the first frost but before the ground freezes solid for the winter. In Michigan, planting time is 6 weeks prior to the ground freezing, giving enough time for root growth only, to avoid freezing the leaves. In California, garlic can be planted in January or February.
Both hardneck and softneck garlic do best when planted in the fall, though softneck garlic may also be planted in the very early spring if you have to (with reduced yields). If you miss the window for fall planting, ensure that your seed garlic gets 40 days at or below 40°F (4.5°C) in storage before spring planting, or the lack of vernalization will mean the bulbs will not differentiate (divide into separate cloves).

Here I’ve combined information from Grey Duck Garlic with what I already knew.
- Exposure to really hot weather in fall can reverse the vernalization process and result in smaller bulbs. Planting too early leads to poor growth and bulbing, and your seed cloves may disappear. If you plant when it is still too warm, the garlic has to sit in the ground until it gets cold enough to grow roots. During that time, it is susceptible to diseases, and pests including hungry voles. If planted too early, too much tender top growth can happen before winter, leading to its death when cold weather arrives.
Planting too late results in insufficient root growth to anchor and feed the plant for the winter. Plants may die during the winter or may struggle to restart growth once it warms up. Bulbs that do survive will be small.
- In Zones 0–3, if there is no permafrost, plant garlic in September.
- In Zones 3b–5, plant from late September to early October. Plant 2–3 weeks after the first frost but about 4–6 weeks before the ground freezes solid for the winter. This gives time for root development in the fall. Microclimates can make a big difference in marginal areas, and it is a lot colder at higher elevations.
- In Zones 5–6b, plant in the second half of October. If your area does not normally get seasonally frozen ground, you could plant later.
- In Zones 7–9, plant in early to mid-November; up till late November in Zone 9. Planting deeper helps keep the garlic at a steadier temperature (milder during the winter, cooler once spring heats up).
- In Zones 9 and 10, look for soil to be less than 85°F (29°C) at 2″ (5 cm) deep – garlic can be planted in December or even as late as February if you have vernalized the planting stock. Garlic cloves need cold temperatures to start growing roots. (Vernalization for hardneck garlic = 6 weeks of cold temperature below 40–45°F/4–7°C; softneck is less demanding.) You can vernalize garlic in a refrigerator. Without sufficient vernalization, the bulbs will not differentiate (divide into separate cloves).
- In Zones 11–13, I think plant in January or February after vernalization; check with local growers or your Extension Service as there’s very little info out there. See the excellent Grey Duck Farm’s Southern Garlic Grower’s Guide by Susan Fluegel.
- If you miss the window for fall planting, ensure that your seed garlic gets 40 days at or below 40°F (4.5°C) in storage before spring planting (see info about vernalization above, under Zones 9 and 10)

Photo Pam Dawling
Garlic Starts Growing When Conditions Are Right
Garlic roots will grow whenever the ground is not frozen, and the tops will grow whenever the temperature is above 40°F (4.5°C). In colder areas the goal is to get the garlic to grow roots before the big freeze-up arrives, but not to make top growth until after the worst of the weather.
In warmer areas, the goal is to get enough top growth in fall to get off to a roaring start in the spring, but not so much top growth that the leaves cannot endure the winter. If garlic gets frozen back to the ground in the winter, it can regrow and be fine. If it dies back twice in the winter, the yield will be lower than it might have been if you had been luckier with the weather. When properly planted, garlic can withstand winter lows of –30°F (–35°C).
Sources for Seed Garlic
The Garlic Store, CO.
Keene Organic Garlic, Madison, WI
Irish Eyes. WA
Southern Exposure Seed Exchange. VA
Territorial Seed. OR


















Dry seed processing and saving













