Should I care about yeast foaming?

[TonyP]

Many yeast / grape compatibility charts show foaming as a yeast characteristic. Foaming never concerned me and I've never had a problem with foaming in primary fermentation but I've begum to wonder why everyone shows it. Why do wine makers care about the amount of foaming?

 

[Johnd]

Many yeast / grape compatibility charts show foaming as a yeast characteristic. Foaming never concerned me and I've never had a problem with foaming in primary fermentation but I've begum to wonder why everyone shows it. Why do wine makers care about the amount of foaming?

If you’re cutting it close on your fermenter sizes, it could mean the difference between an overflow and a troublefree fermentation. Other than that, you need not shy away from a yeast that gets a little foamy, if you like the yeast, it’s characteristics, and the way it makes your wine taste, just plan ahead for a little extra space.

 

[Rice_Guy]

Yeast are capable of producing considerable foam, it is messy if it occurs.
That said I have never had an issue with wine yeast and only experienced this experimenting with yeast that dies at 8% alcohol.