Than Onion & Higher Yield Soil?

Can anyone confirm you get more than 1 Than Onion by planting with the Grade 3 Shroud Topsoil? I'm assuming now since it's so hard to get and an FC mate told me it didn't work for Glazenuts, assuming it won't work with these but figured I'd ask. Appreciate any feedback.

It does not.

No matter the soil you only get one

Ok - thanks guys. Pretty much what I thought

edit: forget about what I wrote, it was wrong :D

even shroud 3 soils yields only 1 seed while breeding for thav seeds