Hydrangea Heart Throb®

Heart Throb® is the trade name for Hydrangea macrophylla ‘Hortmagitri’ PP30044, a compact bigleaf hydrangea with dark red flowers edged in green. The blooms deepen toward bronze and green tones as they age, giving the plant a changing display through summer. ## Size and placement Plant Development Services lists a mature size of about 3 feet tall and wide and recommends part shade to shade. Its compact scale suits a small garden bed, border, container, or mass planting. The plant is rated for USDA zones 5–9; the brand describes the selection as resistant to common pests and diseases. ## Flowers and care The Southern Living plant profile says Heart Throb flowers on both new and old wood, prefers well-drained garden soil, and uses medium water. It does not require routine pruning, though individual damaged stems can be removed when necessary. Site it where the root zone can stay evenly supplied with moisture without sitting in water. ## Maintenance Add mulch to help moderate soil moisture, and avoid heavy pruning that removes flowering stems. See the [Plant Development Services cultivar profile](https://plantdevelopment.com/introductions/hydrangea-heart-throb/) and [Southern Living growing card](https://southernlivingplants.com/wp-content/uploads/Hydrangea_Heart_Throb.pdf) for the exact identity, size, zone, exposure, and care details.