Garlic 101: When to plant for a successful harvest

Since we are in the full swing of shipping garlic for seed, we often get questions on when to plant or what is the optimal time to plant. We are in NY and can generally expect cold and snow, sometimes a lot of snow! We recommend our garlic for those that have similar climates as they are adapted to long cold winters and need that time to vernalize properly. Being subjected to a long, cold period triggers the clove to segment into the full beautiful bulb that your looking to achieve.

For most of us in the colder Northern climes, the sweet spot is fall planting, about 4 to 6 weeks before the ground freezes. In warm climates, garlic goes in during the coolest part of winter. In very cold zones, it may need to be planted earlier than expected.

Fall planting starts with clean cloves and a ready bed.

Planting works best when the cloves develop roots before winter

After we plant, cloves need enough time to establish and grow a good root system prior to the winter weather rolling in. If the weather is a little milder before the end of the year the top may show a little green, and that is fine, but we are looking for that sweet spot of healthy root growth without too much leafing out. Heavy leafy growth before winter can waste energy.

A helpful guide is soil temperature. Garlic does well when planted once the soil has cooled to around 50°F. If the days are still hot and the soil feels warm, wait. If the ground is close to freezing solid, plant soon.

When to plant garlic by USDA zone

Use this chart as a starting point. Local weather matters, so adjust for your first hard freeze, elevation, rainfall, and how quickly your soil cools. We are zone 6B and typically we plant around Halloween. The last couple of years we have had some milder weather into December so we could have safely pushed it until the first or second week of November. However, we like to get those strong roots going before snow sets in.

Some say they plant by the phases of the moon and plant garlic just after the full moon when it is waning. Which would put us right around the end of October this year. Lore says the waning moon pull moisture and energy down into the soil and is best for root crops. Here is a fun graphic on that from the Farmers Almanac https://www.almanac.com/planting-by-the-moon

USDA Zone	Typical garlic planting window	Climate notes
Zones 1 to 2	Late August to mid-September	Plant early so roots form before deep freezing. Mulch well.
Zone 3	Early to late September	Aim for several weeks of root growth before winter settles in.
Zone 4	Late September to mid-October	A common hardneck garlic zone. Mulch after planting.
Zone 5	Early to late October	One of the most reliable fall planting windows.
Zone 6	Mid-October to early November	Wait for cooler soil, especially after a warm fall.
Zone 7	Late October to November	Plant after summer heat is gone but before winter rain gets heavy.
Zone 8	November to December	Softneck garlic is often a strong choice. Hardneck may need pre-chilling.
Zone 9	December to January	Plant during the coolest stretch. Pre-chill hardneck cloves if needed.
Zones 10 to 11	December to January	Choose softneck types or pre-chill cloves for several weeks before planting.

Quick garden bed prep before planting

Dont forget the prep! Garlic likes loose, fertile, well-drained soil. It does not like sitting in water. A small amount of prep makes a big difference because the crop stays in the bed for many months.

Start by clearing weeds and old plant debris. Garlic does not compete well with weeds, especially in spring when bulbs begin to size up.

Loosen the soil 6 to 8 inches deep. Mix in finished compost to improve texture and feed soil life. If your soil is heavy clay, a raised bed or mounded row helps water drain away from the cloves.

Keep the prep simple:

• Choose a sunny spot

  Garlic grows best with full sun, especially in spring.

  
  

• Add compost

  Use finished compost, not fresh manure, which can be too strong and may cause problems.

  
  

• Improve drainage

  If water puddles after rain, plant in raised rows or raised beds.

  
  

• Avoid compacted soil

  Loose soil lets bulbs expand more easily.

  
  

• Rotate crops

  Do not plant garlic where onions, leeks, shallots, or garlic recently grew if you can avoid it.

  
  

What to expect after planting

A little green growth in fall is normal. Don't panic! A warmer spell may trigger the garlic to shoot up a little. Garlic is extremely resilient and other than a little possible tip damage it will do just fine. The roots are the main goal. Cold weather will slow the plant down, and growth will pick up again in spring.

So, check your zone, prepare your bed and get ready to plant at the correct time! Oh, yeah, and buy some garlic from our shop, it's the best!

Feel free to contact us with any questions.

Happy planting!!

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A light mulch layer protects garlic through winter.