Crimson Showstopper: Clematis ‘Boulevard® Nubia™’ Brings Vertical Drama to the Garden
Clematis ‘Boulevard® Nubia™’ is a striking crimson-flowered vine that proves you don’t need a towering trellis or sprawling garden to enjoy the elegance of clematis. Bred by renowned plantsman Raymond Evison, this compact cultivar is part of the Boulevard® series—a collection specially developed for small gardens, patios, and containers. With its deep red blooms, reblooming habit, and modest size, ‘Nubia™’ is a top-tier choice for urban gardeners and cottage-style landscapes alike.
Clematis ‘Boulevard® Nubia™’ Belongs to a Decorated Lineage
A member of the Ranunculaceae family, Clematis ‘Boulevard® Nubia™’ carries the breeding signature of Clematis‘Evipo079’. It was introduced to North American gardeners in 2017. This Clematis represents a notable improvement over earlier red-flowered cultivars like ‘Rebecca’, offering a longer bloom window, greater flower density from the base upward, and an ability to flower on both old and new wood. The vine maintains a manageable height of 1.2–1.5 meters (4–5 feet) and spreads about 60 cm (2 feet), making it an exceptional fit for small-scale vertical displays.
Ornamental Features of Clematis ‘Boulevard® Nubia™’
This clematis delivers large, 12–13 cm (5-inch) diameter blooms in a rich, velvety crimson red. Its petals are slightly velvety with a luminous sheen that catches sunlight beautifully, while contrasting red anthers add depth. The blooms appear first in early summer and often return in late summer to early fall, making it one of the longer-lasting bloomers in its size class. Its lush, dark green foliage sets the flowers off to perfection and remains attractive through the growing season.
Because it flowers freely from both leaf axils and upper stems, the plant gives a full, floriferous appearance even from the ground up—perfect for dressing up entryways, mailbox posts, or compact trellises. It also makes a fantastic “thriller” element in large mixed containers or patio planters.
How to Grow Clematis ‘Boulevard® Nubia™’
Light
Clematis ‘Boulevard® Nubia™’ thrives in full sun to partial shade. Ideally, the plant should receive at least six hours of sunlight per day to maximize bloom production. However, in hotter climates, giving the flowers some protection from intense afternoon sun can help preserve their color vibrancy and prevent scorching.
Soil
This clematis prefers fertile, well-drained soil with a slightly alkaline pH. Incorporating organic matter such as compost or well-rotted manure at planting time greatly improves soil structure and nutrient availability. A key tip with clematis is to keep the roots cool and shaded. Planting low-growing perennials or groundcovers near the base of ‘Nubia™’ is an excellent strategy for protecting its roots from heat stress.
Watering
During the establishment phase, typically the first full growing season, water deeply and regularly to help develop a strong root system. Once the plant is well-rooted, allow the top layer of soil to dry slightly between waterings to prevent root rot, but never let the soil become bone dry. Clematis likes consistently moist, but not soggy, conditions—especially when actively flowering in summer.
Fertilizing
To support repeat flowering, begin a fertilizing routine in early spring using a balanced, slow-release fertilizer. After the first flush of blooms fades, a second feeding can help encourage new buds for late-summer flowering. Liquid feeds rich in potassium (like tomato fertilizer) are particularly beneficial during peak bloom periods.
Pruning
Clematis ‘Boulevard® Nubia™’ falls into Pruning Group 2. This means it benefits from light pruning in late winter or early spring to remove weak or damaged stems, followed by a tidy-up after the first bloom to encourage new growth and additional flowers. If you need a more compact plant, or if the plant is overgrown, a harder pruning can help, cutting back to strong buds 30–45 cm (12–18 inches) from the base.
Training and Support
Because of its climbing habit, ‘Nubia™’ requires a support structure such as a trellis, arbor, obelisk, or even a sturdy shrub to scramble through. The stems use leaf petioles to grasp onto supports, so structures should be thin enough for these to wrap around. In containers, placing a small metal or wooden trellis within the pot provides both beauty and support.
Landscape and Design Uses for Clematis ‘Boulevard® Nubia™’
‘Nubia™’ brings versatility to gardens of every size. It thrives as a vertical accent in containers, especially on balconies or patios where space runs tight. In traditional garden settings, it climbs fence posts, gates, and porch railings with ease. Its compact size allows it to grow alongside roses, shrubs, and dwarf conifers without overwhelming them.
Crimson blooms draw in pollinators like butterflies and hummingbirds, adding movement and life to the garden. Florists prize it as a cut flower for its vivid color and upright form in arrangements.
Gardeners in both rural and urban areas appreciate its resistance to rabbits and its tolerance for black walnut proximity. In USDA zones 4 through 9, ‘Nubia™’ survives winter reliably. In colder regions, adding a light mulch over the crown helps protect it during harsh freezes.
Pests and Diseases
Clematis are generally resilient, though they can suffer from clematis wilt, a fungal issue that causes sudden stem collapse. Planting deeply (5 cm or 2 inches below soil level) helps reduce the risk. Aphids, slugs, and snails may appear but are rarely serious. Maintain good air circulation and avoid overhead watering to limit fungal problems.
Propagation and Legal Notes
Clematis ‘Boulevard® Nubia™’ is protected under the Plant Patent Act, and propagation without a license is prohibited. For gardeners looking to expand their clematis collection, purchasing additional plants from reputable nurseries is the best approach.
Final Thoughts on Clematis ‘Boulevard® Nubia™’
Few compact climbers offer the garden drama and blooming power of Clematis ‘Boulevard® Nubia™’. Whether planted in a pot on the patio or allowed to ascend a small trellis by the garden gate, this dark red beauty delivers big color without overwhelming the space. Easy to grow, generously blooming, and naturally elegant, ‘Nubia™’ is an excellent choice for gardeners who want rich color in vertical form with minimal fuss.
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