I believe Henry and others also said, if you leave a scape or two on, they show when the rest is ready to harvest - when the scape stands fully upright. I don't think mine have ever got to that point but our weather is always threatening to turn wet and so I tend to err on the early side. Excuses, it's true, I just can't wait to get my hands on em.
![Smile](images/smilies/smile1.gif)
An advantage of early harvest for a home gardener, it's said to improve keeping quality. I'm still eating porcelain garlic, still good ten months now from the harvest date.
Excuses, more excuses.
![Wink](images/smilies/wink.gif)
Down side is bulbs will be smaller of course, the earlier you harvest.
And somewhere in the middle there's "just right"....
![Rolling Eyes](images/smilies/rolleyes.gif)
Posted the same time as you, TomNJ. Sounds like you have the "just right" figured out!