Rudbeckia Blackeyed Susan Goldstrum

Description: Black-eyed Susans are well-known for their bright and cheery blooms, which feature golden-yellow petals surrounding a dark brown or black central cone, giving them their distinctive appearance. The flowers typically measure 2 to 3 inches (5 to 7.5 cm) across and bloom profusely from midsummer to fall. The plant itself has a bushy, clumping habit and produces dark green, lance-shaped leaves along sturdy, upright stems.

Size: Depending on the variety, Black-eyed Susans can grow to various heights, typically ranging from 1 to 3 feet (30 to 90 cm) tall and spreading about 1 to 2 feet (30 to 60 cm) wide. Some cultivars may be more compact, while others can reach taller heights. Overall, they're a relatively low-maintenance and manageable size for most gardens.

Best Growing Zones: Black-eyed Susans are hardy in USDA hardiness zones 3 through 9, making them adaptable to a wide range of climates. They thrive in full sun but can also tolerate partial shade, although they may not bloom as profusely in shadier conditions. They prefer well-drained soil and are quite drought-tolerant once established. They're a great choice for gardeners in regions with hot summers and relatively mild winters.

Soil Requirements: These plants aren't particularly picky about soil type but prefer soil that is well-drained and moderately fertile. They can tolerate various soil pH levels and are relatively drought-tolerant once established. Amending the soil with organic matter like compost can help improve soil structure and fertility, promoting healthier growth and more abundant flowering.

Maintenance: Black-eyed Susans are relatively low-maintenance plants. They benefit from regular watering, especially during hot, dry periods, but are generally quite resilient and can withstand some drought. Deadheading spent blooms can encourage continuous flowering and prevent self-seeding, although some gardeners may allow the plant to self-seed to naturalize an area. Dividing clumps every few years can help rejuvenate older plants and prevent overcrowding.