Hi Mark. This years are from a head of pips that were from an onion plant I gave to a local pal. That plant was from a pip produced by an onion grown from seed by a pal in Derbyshire who got the seed from Peter Holden. Sometimes PH strain can have a dimpled base but the one put down to seed didn’t. You can get away with growing a lot less if you can grow from pips. Not sure how many generations it takes before you can call it your own strain!!