Common Name: Bottlebrush Sun Requirements: Callistemon 'Mary Mackillop' thrives in full sun. It requires at least 6 to 8 hours of direct sunlight daily for optimal growth and flowering. Soil: Plant Callistemon 'Mary Mackillop' in well-draining soil with good moisture retention. It prefers slightly acidic to neutral soil pH. Amending the soil with organic matter such as compost can improve its texture and fertility. Watering: Keep the soil consistently moist, especially during the plant's establishment period. Once established, water deeply and less frequently, allowing the soil to dry out slightly between waterings. Avoid waterlogging, as it can lead to root rot. Temperature: Callistemon 'Mary Mackillop' is tolerant of a wide range of temperatures but prefers warm conditions. It is suitable for USDA hardiness zones 9 to 11, where temperatures remain above freezing. Fertilizing: Apply a balanced fertilizer formulated for flowering shrubs in spring, just before the growing season begins. Repeat the application every 4 to 6 weeks during the growing season to promote healthy growth and abundant flowering. Maintenance: Prune Callistemon 'Mary Mackillop' lightly after flowering to remove spent flower heads and maintain its desired shape and size. Avoid heavy pruning, as it can reduce flowering in the following season. Monitor for pests such as scale insects or aphids and treat them promptly if detected. Growth Profile: Height: Callistemon 'Mary Mackillop' typically grows to a height of 1.2 to 1.8 meters, though it can vary depending on growing conditions and pruning practices. Spread: Its spread is generally similar to its height, forming a dense and bushy growth habit. Characteristics: Callistemon 'Mary Mackillop' is prized for its profusion of bottlebrush-like flowers that bloom in spring and summer. The flowers are typically red in color and highly attractive to pollinators such as bees and butterflies. Its evergreen foliage adds year-round interest to the landscape. Ideal Use: Callistemon 'Mary Mackillop' is well-suited for use as a specimen plant in garden beds or as a focal point in mixed shrub borders. It also works well in coastal gardens, Mediterranean landscapes, or native plantings. Additionally, it can be grown in containers on patios or decks, where its flowers can be enjoyed up close.
