How to Grow Garlic in Pots (Even on an Apartment Balcony)

My first attempt at growing garlic in a pot gave me bulbs about the size of a large marble. Not a design flaw in garlic. A design flaw in the pot. I used whatever was already sitting on the balcony, which turned out to be about 8 inches deep, and garlic wants more room underneath it than that tiny bulb on top would ever suggest.

You don’t need a garden bed. Here’s how to grow garlic in pots and still get real, full-size bulbs: a pot deep enough, the right timing, and about 6 hours of sun. That’s what actually matters.

What Size Pot Do You Need?

Short answer: at least 12 inches deep, and wider is better than deeper past that point.

Garlic looks small on top, but it’s building a proper root system underneath to support the bulb. A shallow pot is the most common way container garlic ends up undersized, and it’s the easiest one to avoid. Go with a container that’s 12 to 14 inches deep and at least as wide, and you can fit 4 to 5 cloves in one pot with room to grow.

Drainage matters just as much as depth. Garlic sitting in waterlogged soil rots before it does anything else, so make sure whatever you’re using actually has drainage holes, not just a decorative pot with none.

Hardneck or Softneck? (And Does It Matter in a Pot?)

Short answer: either works in a container, but hardneck is the safer pick if your balcony gets genuinely cold or windy, and it’s the one that gives you scapes.

Hardneck garlic sends up a flower stalk called a scape, handles cold snaps better, and tends to have fewer, larger cloves. Softneck garlic is what you’ll usually find in a grocery store, stores longer, usually skips the scape, and does better somewhere milder. In a pot on an exposed balcony, hardneck is the more forgiving choice. In a sheltered, warmer spot, either does fine.

When to Plant Garlic

Garlic goes in as what’s usually called an “autumn planting” crop, and the actual calendar months aren’t a simple mirror image between hemispheres. Northern Hemisphere, that’s roughly September to November, timed around the first hard frost. Southern Hemisphere, including New Zealand and Australia, the window runs later and longer: April through to around the winter solstice (roughly June 21), sometimes stretching into early August in warmer northern regions. That’s not a typo, the Southern Hemisphere window is genuinely longer and anchored to the shortest day of the year, not a straight 6-month shift of the Northern Hemisphere dates.

If you get real frosts where you live, aim to plant 4 to 6 weeks before the first one, while the soil is still workable and cooling toward 50°F (10°C). If your climate rarely frosts at all, which describes a lot of New Zealand, work off the solstice instead: get cloves in the ground with enough time to establish roots before the shortest day. Either way, the same principle holds, give the clove time to root before the coldest, darkest stretch of the year, rather than treating “autumn” as one universal month.

Planting the Cloves

Break the bulb apart right before planting, not weeks ahead, and plant the individual cloves, not the whole bulb. Push each clove into the soil pointy end up, about 2 inches deep, spaced 4 to 6 inches apart. In a 12 to 14 inch pot, that’s usually 4 to 5 cloves without crowding them.

Use a loose, well-draining potting mix with some compost worked in. Garlic doesn’t want heavy, compacted soil any more than it wants to sit in water.

How Much Sun and Water Does It Need?

Short answer: at least 6 hours of direct sun a day, and consistently moist soil while it’s actively growing, easing off as harvest gets close.

Less than 6 hours of sun and you’ll still get green growth, just smaller bulbs, since bulb size is directly tied to how much light the plant is actually getting. A balcony or patio spot that gets a solid morning-to-early-afternoon run of direct sun works. A sun-facing window ledge can work too if it’s genuinely bright for most of the day, not just light for an hour.

Keep the soil consistently moist, not soggy, through the growing months. About 2 to 3 weeks before you plan to harvest, cut back on watering. Drying the soil out slightly at the end helps the wrappers firm up instead of the bulb going into storage still damp.

What’s a Scape, and Do You Need to Cut It?

Short answer: if you’re growing hardneck garlic, yes, cut the scape once it curls, and eat it, don’t compost it.

The scape is a curling flower stalk that hardneck garlic sends up in late spring. Left alone, it redirects energy into producing seeds instead of growing the bulb underneath. Cut it once it’s curled through one full loop, and the bulb below gets noticeably bigger by harvest. I missed this on an early batch, more out of not knowing what I was looking at than laziness, and the bulbs were smaller than the batch where I actually cut them. Scapes taste like a milder, greener garlic and work well chopped into a stir-fry or blended into a quick pesto, so cutting them isn’t waste, it’s a second harvest.

Softneck varieties usually skip the scape entirely, so if yours never sends one up, that’s normal, not a problem.

How Do You Know When to Harvest?

Short answer: when the bottom 3 to 4 leaves have yellowed or browned but the top leaves are still green, not when the whole plant has died back.

Waiting for total die-back is the other common mistake. By then the bulb’s outer wrapper has often already started splitting, which shortens how long it keeps in storage. Lift one test bulb if you’re unsure. It should have well-formed, separate cloves under a papery wrapper.

Curing Before You Store It

Don’t wash the bulbs. Brush off loose soil and leave the roots and stalk attached. Cure the whole plant somewhere warm, dry, shaded, and well-ventilated for 2 to 4 weeks, until the outer wrapper feels papery and the neck has dried out. Only then trim the roots and stalk back and move the bulbs to a cool, dark spot for actual storage. Skipping the cure is the fastest way to end up with garlic that goes soft in a few weeks instead of lasting months.

Where to Start

Garlic is a slow one. You plant it, mostly leave it alone for months, and it rewards patience rather than effort, which makes it a good project if you’re easing into growing your own food rather than diving in headfirst. If you haven’t already, the indoor herb growing guide is a faster-turnaround place to start building that habit, and the urban homesteading guide covers the wider picture if garlic’s got you wondering what else fits on a balcony.

And if you want the next practical step landing in your inbox instead of hunting for it later, the free windowsill starter guide is exactly that.