Why Does My Garlic Have a Green Sprout Inside?

You cut a clove of garlic in half and find a green shoot running through the middle. It is a common sight, especially in stored garlic later in its life, and it leads to two questions: what is it, and is it still good to use? The short answer is that the green sprout is simply the clove beginning to grow, and it is harmless — though it has a couple of practical implications. Let me explain.

What the green sprout is

The green shoot inside a clove is the embryonic leaf — the start of a new garlic plant. Each clove is a little package capable of growing into a new plant, and when conditions (or simply time) trigger it, the green sprout develops inside the clove, eventually pushing out the top. It is a completely natural part of garlic's life cycle, the same growth you rely on when you plant a clove. It is not mould, rot, or anything harmful, and it does not mean the garlic has gone bad.

Is it safe to eat?

Yes, sprouted garlic is perfectly safe to eat — the green shoot is harmless. The only catch is flavour: the green sprout tends to taste more bitter and pungent than the clove around it, so many cooks remove it for a milder, sweeter result. Simply slice the clove in half and lift or cut out the green shoot before using. The rest of the clove is fine. (Interestingly, sprouting garlic has even been found to develop extra antioxidants, so there is no need to throw it out.)

Why it sprouts and how to slow it

Garlic sprouts as it ages, and faster in the wrong storage conditions — particularly cool, refrigerator-like temperatures and damp conditions, which break dormancy and trigger growth. So garlic kept in the fridge or a cold damp place sprouts sooner. To keep cloves dormant and sprout-free longer, store garlic cool but not cold (around 10–18°C), dry, and airy, never in the fridge or sealed in plastic — and start with well-cured bulbs. Longer-keeping softneck types resist sprouting better than hardnecks.

Put the sprout to use

A sprouted clove is also an opportunity: you can plant it to grow a new garlic plant, or pot it up to harvest the tender green shoots as "green garlic" for a mild garlic flavour in cooking. So when you find a green sprout, you have three good options — remove it and use the clove as normal, use the whole thing if you do not mind the stronger taste, or plant it. None of them is throwing it away. And adjusting your storage will keep future cloves sprout-free for longer.