Syringa vulgaris 'Katherine Havermeyer' (blue)

This deciduous shrub boasts a dense, upright habit and is prized for its abundant, fragrant, lavender-blue flowers that bloom in mid-to-late spring. Ideal for USDA hardiness zones 3 to 7, it thrives in full sun and well-drained, neutral to slightly alkaline soil. Its rounded form typically reaches a mature height of 8 to 12 feet, with a width of 6 to 8 feet. This lilac provides a hint of yellow fall color, adding seasonal interest after its bloom period. While not deer-resistant, it attracts pollinators like bees and butterflies, enhancing biodiversity in gardens. Suitable for privacy screens, borders, or focal points, this shrub is a classic choice for traditional and cottage landscapes.