Product Description
Rudbeckia 'Treasure Trove' PP36594 CPBRAF - Proven Winners® ((30)ct Flat
Common Name: Black-Eyed Susan
Prepare for your garden to glitter with golden splendor with the introduction of Rudbeckia 'Treasure Trove', a truly exceptional new treasure from Proven Winners®. This vigorous perennial is a spectacle of large, star-shaped, golden yellow flowers that completely blanket the plant, thanks to its exceptionally well-branched stems that ensure a prolonged bloom season. 'Treasure Trove' abounds not only with an impressive profusion of flowers but also with robust foliage. It forms a sturdy clump of large leaves that contribute significantly to its longevity and presence in the landscape. Crucially, the foliage of 'Treasure Trove' exhibits outstanding resistance to Septoria leaf spot, a common fungal issue that can plague other Rudbeckia varieties, showing no damage through six years of rigorous trials.
Rudbeckia, commonly known as Black-Eyed Susan, is a cherished genus of vibrant, daisy-like perennials distinguished by their bright yellow petals and distinctive dark brown centers. Native to North America, these hardy and cheerful plants are a cornerstone of resilient garden design. They are renowned for their ability to attract a diverse array of pollinators, including bees, butterflies, and songbirds, making them invaluable for supporting local ecosystems. Rudbeckia is an excellent choice for wildflower gardens, mixed borders, and butterfly gardens, and their sunny blooms make stunning, long-lasting cut flowers. With their inherent resilience and minimal maintenance requirements, Rudbeckia varieties like 'Treasure Trove' add enduring color and significant ecological value to any garden space.
- Height: Reaches a mature height of 32 to 36 inches (81-91 cm).
- Spread: Forms a robust clump with a spread of 36 to 42 inches (91-107 cm).
- Foliage: Features lush, green-shaded foliage with large leaves, forming a vigorous and dense clump. Crucially, it demonstrates high resistance to Septoria leaf spot.
- Flowers: Produces large, star-shaped, golden yellow flowers with prominent dark centers, appearing in great abundance on well-branched stems.
- Bloomtime: Offers a long and continuous blooming season from Midsummer through Late Summer and into Early Fall.
- Seasonal Interest: Provides vibrant Fall Color from its golden blooms and retains attractive Dried Seed Heads for winter interest.
- Flower Color: Yellow/Gold Shades
- Foliage Color: Green shades
- Bloomtime: Midsummer, Late Summer, Early Fall (Long Blooming)
- Growth Rate: Medium
- Attracts Wings: Attracts Butterflies, Attracts Songbirds, Bee Friendly
- Critter Resistant: Deer Resistant, Rabbit Resistant
- Seasonal Interest: Dried Seed Heads, Fall Color
- Other Features: Border Plant, Container Plant, Cut Flower, Easy To Grow, Mass Planting.
Rudbeckia 'Treasure Trove' is a patented variety (PP36594) and holds Plant Breeder's Rights (CPBRAF), underscoring its novel and superior characteristics. Its most significant advancements are its exceptional resistance to Septoria leaf spot and its vigorous growth habit combined with a prolific and extended bloom time. This cultivar offers the beloved classic look of a Black-Eyed Susan without the common foliage issues, ensuring a healthier and more attractive plant throughout the season. Its ability to attract a wide range of pollinators further enhances its value in ecological gardening.
Rudbeckia species, commonly known as Black-Eyed Susans, are native to various habitats across North America, including prairies, open woodlands, meadows, and disturbed areas. Their adaptability to a range of soil conditions and their preference for sunny locations are indicative of their robust nature.
Landscaping Design Tips
Rudbeckia 'Treasure Trove' is an invaluable asset in the garden, providing a burst of sunshine and ecological benefits to numerous landscape settings.
- Mass Planting: For an absolutely breathtaking and continuous display of golden color, mass plant 'Treasure Trove' in large sweeps or drifts. This creates a spectacular visual impact, provides excellent groundcover, and effectively suppresses weeds. Mass plantings are particularly effective in meadow-style gardens, large borders, or naturalized areas, and will attract an abundance of pollinators.
- Border Plant: Its sturdy, upright habit and long bloom time make it an excellent choice for the middle or back of perennial borders, adding vibrant color and texture.
- Pollinator and Wildlife Gardens: An essential component of any pollinator garden, its nectar-rich flowers are irresistible to butterflies and bees. The dried seed heads, left standing through winter, provide a vital food source for songbirds, enhancing garden biodiversity.
- Cottage and Eclectic Gardens: Its cheerful, informal blooms fit perfectly into the charming chaos of cottage gardens and add a vibrant element to eclectic designs.
- Prairie and Meadow Plantings: Naturally suited for prairie and meadow restoration projects or informal naturalistic gardens, where it contributes to the wild, untamed beauty.
- Containers: Can be grown in large patio containers to bring its vibrant color and cheerful demeanor closer to outdoor living spaces.
- Cut Flower Garden: The classic daisy-like flowers are perfect for cutting, providing long-lasting, sunny bouquets for indoor enjoyment.
- Rain Garden: Its tolerance for varying moisture levels, while preferring well-drained soil, can make it a suitable candidate for the drier zones of a rain garden.
- Autumn Interest: Ensure its inclusion in designs where fall color is desired, as its golden blooms persist late into the season, providing a brilliant display when many other plants are fading.
Rudbeckia 'Treasure Trove' is a robust and cold-hardy perennial, reliably thriving in USDA Hardiness Zones 4 through 9. This wide hardiness range ensures its successful cultivation across a vast majority of temperate climates.
Planting and Cultivation
- Sunlight: Thrives in Full Sun (more than 6 hours of direct sun per day) for the most prolific flowering and best overall performance. It can tolerate Part Shade (4-6 hours of direct sun), but flowering may be less abundant.
- Soil Requirements: Prefers well-drained, not overly rich soil. It adapts to Average Soil Quality. It is tolerant of a wide range of soil pH, from Acidic Soil (pH < 7.0) to Neutral Soil (pH = 7.0) and Alkaline Soil (pH > 7.0). Good drainage is crucial to prevent root rot.
- Water Requirements: Has Low Water Needs to Average Water Needs once established. It is reasonably drought-tolerant. Water regularly during the first growing season to ensure proper establishment.
- Maintenance:
- Deadheading: Remove spent flowers (deadhead) regularly to stimulate continuous bloom and prolong the flowering season.
- Winter Interest: Leave dried seed heads standing through winter for ornamental appeal and as a food source for birds. Cut back old foliage in late winter or early spring before new growth emerges.
- Pest and Disease: Highly resistant to Septoria leaf spot, which is a common issue for other Rudbeckia varieties. Also highly resistant to deer and rabbits, making it a very low-maintenance plant.
Thirty (30) plants per flat (or tray). Approximate Plug Measurements: 3 inches deep x 2 inches wide.
Other Details
The most important part of the plant is its root system. Healthy roots are the foundation of a healthy, vibrant plant. The type of plug container used is based on the specific needs of the plants. Perennials offered as bare root traditionally perform better when planted as bare root.Planted in a specialized mix, potted plants have well established root systems. Top growth stage will vary depending on the current life cycle and time of year when shipped. In Winter and early Spring dormant plants may be shipped. Dormant plants may be planted right away, even before the last frost date.
Most bare root varieties are field grown for at least one season, though Hemerocallis and Hosta are grown for two seasons. The bulk of the soil is removed during the harvesting process and the tops of most varieties are trimmed back to the crown. They are graded, packed in shredded aspen or sphagnum moss and stored in freezers until ready to be shipped.
See our Container Sizes and Bare Root Perennials pages for more information.
Plant information and care is provided in the Overview section, Plant Genus Page and general information is provided in the Planting Care & Guides. Additional questions can be asked on each Plant page.
Plant Spacing: Using the maximum mature spread or width of a plant to guide spacing, ensures space to grow to full size. To fill an area sooner, plant them closer together. Just remember, future thinning or transplanting may be needed.
Water: Keep a close eye on newly planted perennials, especially throughout the first growing year. Most early plant loss is due to too much or too little water!
