A new and distinct cultivar of Hydrangea plant named ‘COUHAGIE’ is disclosed, characterized by large, conical-shaped panicles with flowers that age from cream to green. Plants have compact, v-shaped habits and brown stems. The new variety is a Hydrangea, typically produced as an outdoor ornamental plant.

A new and distinct cultivar of Hydrangea plant named ‘HYLV17522’, characterized by its relatively compact, upright to broadly spreading and mounding plant habit; moderately vigorous growth habit; freely branching habit; strong and sturdy stems; freely flowering habit; panicles with yellowish green-colored sterile flowers that become dark red in color with subsequent development; and good garden performance.

A new and distinct cultivar of Hydrangea plant named ‘HYLV17522’, characterized by its relatively compact, upright to broadly spreading and mounding plant habit; moderately vigorous growth habit; freely branching habit; strong and sturdy stems; freely flowering habit; panicles with yellowish green-colored sterile flowers that become dark red in color with subsequent development; and good garden performance.

A new and distinct cultivar of Hydrangea plant named ‘HYLV18535’, characterized by its relatively compact, upright to broadly spreading plant habit; moderately vigorous growth habit; freely branching habit; strong and sturdy stems; freely flowering habit; panicles with greenish white-colored sterile flowers that become red in color with subsequent development; and good garden performance.

A new and distinct cultivar of Hydrangea plant named ‘HSE1735301’, characterized by its upright to broadly spreading plant habit; freely branching habit; strong and sturdy stems; dark green-colored leaves; freely flowering habit; lace-cap inflorescences with white to greenish white-colored sterile flowers and light violet-colored fertile flowers; and good garden performance.

A new cultivar of Hydrangea macrophylla plant named ‘Bailmacseven’ that is characterized by its new foliage growth that is dark purple in color, its dark purple foliage that retains color throughout the summer into fall even in hot summer climates, its inflorescences with sterile sepals that are red-pink in color with creamy white centers (under non-bluing conditions), and its remontant and heavy blooming habit.

A new and distinct cultivar of Hydrangea plant named ‘HISHA’, characterized by its upright and broadly spreading plant habit; freely branching habit; strong and sturdy greyed purple-colored stems; freely flowering habit; large and dense inflorescences with dark purplish pink-colored sterile flowers; and good post-production longevity.

A new and distinct cultivar of Hydrangea plant named ‘SCHROLLA25’, characterized by its compact, upright and mounded plant habit; moderately vigorous growth habit and rapid growth rate; freely branching habit and strong and sturdy stems; dark green-colored leaves; mophead-type inflorescences with purplish pink-colored sterile flowers; when “blued”, that is, treated with aluminum sulfate, sterile flowers are strong blue in color; long flowering period; and good postproduction quality and longevity as a container plant or cut flower and good garden performance.

A new and distinct cultivar of Hydrangea plant named ‘HIMOO’, characterized by its upright and broadly spreading plant habit; moderately vigorous to vigorous growth habit and moderate growth rate; freely branching habit; strong and sturdy stems; dark green-colored leaves; freely flowering habit; large and dense inflorescences with white-colored sterile flowers with purplish red-colored margins; and good post-production longevity.

A new and distinct cultivar of Hydrangea plant named ‘SMNHRL’ is disclosed, characterized by large, mophead inflorescences with red-pink flowers, and dark green foliage. Sepals open a vivid green, turning whitish-green. Plants are vigorous with upright habits. The new variety is a Hydrangea, typically produced as an outdoor ornamental plant.