A new and distinct variety of Azalea plant, referred to by its cultivar name, ‘Lazamorwhi’, is disclosed. The new variety forms attractive, solid white-colored single inflorescences. Attractive medium-green colored foliage is formed, which contrasts beautifully with the flowers. A moderately vigorous, mounding, globose, upright growth habit is displayed. The new variety is well suited for providing attractive ornamentation in the landscape.

A new and distinct Rhododendron cultivar named ‘MFARSS’ is disclosed, characterized by distinctive full double pink flowers. Plants are upright and vigorous. Plants bloom Spring, Summer and Fall and exhibit good tolerance to environmental stressors. The new cultivar is a Rhododendron, suitable for ornamental garden purposes.

A new and distinct Rhododendron cultivar named ‘ROBLEZ’ is disclosed, characterized by distinctive semi-double red flowers. Plants bloom Spring, Summer and Fall and exhibit good tolerance for both hot and cold conditions. The new cultivar is a Rhododendron, suitable for ornamental garden purposes.

A new cultivar of hybrid Rhododendron plant named ‘UMNAZ633’ that is characterized by its rounded plant form with compactly branched plant habit; reaching 1 m in height and width after 15 years of growth, its abundance of flowers that are red in color in mid to late May in Excelsior, Minn. with the red color retained throughout the bloom period without substantial fading prior to abscission, its good cold hardiness with flower buds that are resistant to cold damage and consistently bloom even when exposed to temperatures as low as −25°, and its foliage with relatively good tolerance to powdery mildew.

A new cultivar of hybrid Rhododendron plant named ‘Royal Resilience’ that is characterized by its fast and vigorous growing habit, its good growth in warm climates, and its very good resistance to powdery mildew and other foliar diseases.

A new and distinct cultivar of Rhododendron plant named ‘NCRX5’ having a profusion of large, double white flowers with a yellow-green blotch, cold-hardiness in USDA Zone 6b, consistent reblooming in Fall, dense habit, and a tetraploid cytotype. The new cultivar is a Rhododendron, suitable for ornamental garden purposes.

A new cultivar of hybrid Rhododendron plant named ‘HoldenRhodo221’ that is characterized by its resistance to root rot caused by Phytophthora cinnamomi, its cold hardiness (plant and flower buds) at least to U.S.D.A. Zone 5a, its flowers that are red to dark pink in color with strong marginal undulation, its profuse and consistent flowering, its compact plant habit, its foliage that is dark in color and glossy, and its good growth in full sun in unamended sand and gravel loam soils, up to at least pH 6.2.

A new cultivar of hybrid Rhododendron plant named ‘HoldenRhodo201’ that is characterized by its showy flowers with strong marginal undulation, its flowers that are pink, fading to white and have a deep red flare, its profuse and consistent flowering with flower buds that are hardy to at least −15° F., its compact plant habit, its foliage that is glossy and dark in color, its ease of propagation by stem cuttings, its vigorous growth habit in full sun in unamended sand and gravel loam soils up to pH 6.2, and its high resistance to root rot caused by Phytophthora cinnamomi.

A new and distinct cultivar of Rhododendron plant named ‘HoldenRhodo214’ is disclosed, characterized by showy rose-purple flowers, and dark, glossy foliage ‘HoldenRhodo214’ has a compact habit and has been observed to have a high survival rate in evaluation fields known to contain the root rot soil pathogen Phytophthora cinnamomi. Also observed is robust growth in full sun in unamended sand and gravel loam soils, up to pH 6.2. Profuse and consistent flowering, with plant and flower buds hardy to at least −26° C. The new variety is a Rhododendron, typically produced as an outdoor ornamental plant.

A new cultivar of hybrid Rhododendron plant named ‘HoldenRhodo213’ that is characterized by its resistance to root rot caused by Phytophthora cinnamomi, its cold hardiness at least in U.S.D.A Zone 5a, its flower buds that are pink in color that open to flowers that are creamy white in color with yellow centers, and its adaptability to open field conditions in Northeast Ohio with soil pH up to at least 6.2.