Hydrangea arborescens "Annabelle"

Foliage: The leaves are dark green, broadly oval, and provide a lush backdrop for the flowers.

Flowers: Produces large, rounded clusters of white flowers that can reach up to 12 inches in diameter. The flowers bloom from early summer to early fall and can last for several weeks, gradually turning green as they age.

Light Requirements: Prefers partial shade to full sun. Annabelle Hydrangea thrives in locations with morning sun and afternoon shade. While it can tolerate full sun, especially in cooler climates, too much direct sunlight in hotter regions can cause the flowers to wilt and the foliage to scorch. In areas with intense afternoon sun, providing some shade will help protect the plant.

Soil Requirements: Thrives in well-draining, fertile soil. Annabelle Hydrangea prefers rich, loamy soil that is slightly acidic to neutral, with a pH of 5.5-7.0. The soil should be high in organic matter, such as compost or leaf mold, to retain moisture while providing good drainage. Although it can adapt to various soil types, consistent moisture is key to maintaining healthy growth and abundant blooms.

Watering: Requires regular watering, especially during dry periods. Keep the soil consistently moist but not waterlogged. Annabelle Hydrangea appreciates deep watering that reaches the roots, particularly during the growing season and hot weather. Mulching around the base of the plant can help retain soil moisture and regulate soil temperature.

Temperature and Humidity: Hardy in USDA zones 4-8. Annabelle Hydrangea is well-suited to a wide range of temperate climates and can tolerate cold winters. It prefers moderate to high humidity but can adapt to varying conditions. The plant is winter-hardy and will go dormant in cold weather, with new growth emerging in the spring.

Fertilization: Apply a balanced, slow-release fertilizer in early spring to support healthy growth and abundant flowering. An additional light feeding in mid-summer can help sustain vigor during the growing season. Organic compost or a mild liquid fertilizer can also be used to provide nutrients. Avoid over-fertilizing, as this can lead to excessive foliage growth with fewer flowers.

Pruning: Prune in late winter or early spring before new growth begins. Since Annabelle Hydrangea blooms on new wood, cutting back the stems to about 12-18 inches above the ground encourages more robust growth and larger blooms. Deadheading spent flowers can extend the blooming period and improve the plant's appearance.

Pests and Problems: Generally pest-resistant, but may occasionally be affected by aphids, spider mites, or leaf spot. Good air circulation around the plant helps prevent fungal diseases such as powdery mildew. If pests or diseases are detected, treat with insecticidal soap or neem oil. Regular monitoring and maintaining garden hygiene can help prevent problems.