"in that Edenic moment at what was suddenly the centre of the world, with that shaft of sunlight and those vestigial flowers – sweet pea?"
Le Printemps ou Le Paradis terrestre
Public DomainLe Printemps ou Le Paradis terrestre - Credit: Nicolas Poussin

"Edenic" would normally imply a state of innocence, which is perhaps not what is meant here.  Eden, for Max, is simply paradise - the ultimate happiness.

The bible doesn't record whether the Garden of Eden featured sweet peas.

Sweet Pea
Creative Commons Attribution Share AlikeSweet Pea - Credit: Living in Monrovia