Looking at bush cherries lately I revisited my interest in Joy, Jan, and Joel bush cherries. Old cultivars, not easy to find. They ripen in August! I don't really know much about them?
Meader Bush Cherries — Prunus japonica X Prunus jacquemontii
Developed by E.M. Meader of the University of New Hampshire, these three
cultivars produce a firm-fleshed, tart cherry on a 4 foot bush. The fruit
ripens in August, thereby avoiding heavy bird pressure. About as hardy
as Nanking cherry, (minus 30 F,) although snow cover may afford additional
protection. Loaded with fruit in the late summer and with flashy red autumn
color, it makes a striking landscape plant.
My Carmine Jewel plants are in pots. One I kept in the garage. and it is profusely flowering now.
The other one rooted through the pot into the ground, so I left it outside all winter. it did fine! It is behind the other in flowering.