Grow Rosa 'Chrysler Imperial' for its richly colored, velvety deep red blooms and strong fragrance through the warm season. You will get the best flower quality when you give it a site with at least 6 hours of sun, plus light afternoon shade in hotter locations, and soil that drains well but stays evenly moist.
Plant with good air circulation and keep mulch a few inches away from the canes. Water at the base of the plant, not over the leaves, and aim for deep soakings rather than frequent light watering. Feed in spring as growth begins and again during the main bloom cycle for steady performance.
Prune in late winter to early spring after the coldest weather has passed, removing dead or crossing wood and shortening canes to encourage strong new flowering shoots. Deadhead spent blooms to keep flowers coming, and watch for common rose issues like black spot and powdery mildew so you can respond early if they appear.
In colder parts of its range, protect the graft union and crown with extra mulch after hard frosts. Space plants so the mature spread has room, and enjoy long-stemmed blooms that are excellent for cutting.