Hardneck varieties of garlic produce a scape with a seed head on them about 1-2 months before the bulbs are ready to harvest. Each of the individual seeds or bulbils produced can be planted, as you would garlic cloves, to produce either a small bulb or a round (one solid piece of garlic) to be harvested the following season. Replant the round and/or the individual cloves that are harvested to produce even bigger bulbs the next season.
When you no longer wish for your garlic to create bulbils, pull out or snap off the scape as soon as it appears in the late Spring so that more of the plant's energy goes back into giving you a bigger bulb of garlic.
By the way, the scapes can be used in any pesto recipe to replace the basil or the garlic. It's delicious served over hot pasta!
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