Hi Eino .
That’s a shame , why do you think it’s that ?
I’ve had issues in the past with all sorts of diseases but still managed to get some nice bulbs .
Think that 3 years ago had about 10 varieties.
I’ve grown Elephant garlic before and got nice bulbs , definitely easier .
But not so keen on the taste ( I like to use the tops as leeks ).
Good luck , it should be fine in the ground .
If it gets too cold some mulch should help 🤞.