"Vox Humana" expounded:

That's not true of all varieties of bleeding heart, at least not in my zone
6 garden. My dicentra 'Luxuriant doesn't go dormant in the heat as long as
it remains moist and is in a shady spot.

That isn't Dicentra spectabilis, which is the traditional 'Bleeding
Heart'. It does die down to the ground in summer. Dicentra formosa
and the variants continue on throughout the summer if they like the
conditions. Mine spreads like a weed, but a nice, controllable weed
G.

Ann