Buddleja davidii Black Knight
Short description
Fast-growing shrub, with arching stems of green leaves. Long conical panicles of dark, purple-blue fragrant flowers. Ht:3m Sp:5m Plant in full sun, in most soils. Tolerates sea air. Prune hard in March.
3 Year Plant Guarantee! Shop with confidence, our hardy plants are all covered under our 3 year plant guarantee.
- Weekday Collection from 4 different locations
- Order by 5 pm for next day collection
- Family-owned since 1977
- Locally grown plants from our very own nurseries
Buddleja davidii Black Knight
Short description
Fast-growing shrub, with arching stems of green leaves. Long conical panicles of dark, purple-blue fragrant flowers. Ht:3m Sp:5m Plant in full sun, in most soils. Tolerates sea air. Prune hard in March.
3 Year Plant Guarantee! Shop with confidence, our hardy plants are all covered under our 3 year plant guarantee.
- Weekday Collection from 4 different locations
- Order by 5 pm for next day collection
- Family-owned since 1977
- Locally grown plants from our very own nurseries
Buddleja davidii Black Knight
Why Buy Me?
- Fragrant flowers
- Highly attractive for butterflies and bees
- Fast growing
Key Features
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Height & Spread: Typically grows to 2.5–4 metres (8–13 feet) tall and wide.
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Foliage: Lance-shaped, grey-green leaves with a white underside.
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Flowers: Deep purple, almost black, fragrant flowers arranged in elongated panicles, blooming from midsummer to early autumn.
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Hardiness: Fully hardy
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Habit: Bushy and arching, with a fast growth rate.
Growing Conditions
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Light: Full sun to partial shade; best flowering in full sun.
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Soil: Moderately fertile, well-drained soil; adaptable to chalk, clay, loam, and sand.
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Moisture: Moist but well-drained; drought-tolerant once established.
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pH: Acidic, neutral, or alkaline soils.
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Exposure: Suitable for both sheltered and exposed positions
Planting & Care
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Planting Time: Best planted in spring or early autumn.
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Spacing: Space plants 2.5–4 metres (8–13 feet) apart.
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Watering: Water well during the first growing season to establish a strong root system.
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Fertilization: Apply a balanced, slow-release fertilizer in early spring.
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Pruning: Prune back hard in March, removing all of the previous year's growth to three or four buds.
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Mulching: Apply a 5–7 cm (2–3 inch) mulch of well-rotted garden compost or manure around the base after pruning.
Seasonal Interest
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Spring: New growth emerges green.
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Summer: Foliage remains vibrant; deep purple flowers bloom.
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Autumn: Leaves turn butter-yellow; red berries appear.
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Winter: Persistent berries add ornamental interest.
Wildlife & Garden Use
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Attracts: Pollinators such as bees and butterflies.
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Uses: Ideal for borders, rock gardens, container planting, and as a low-maintenance hedge.
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Companion Plants: Pairs well with other shrubs and perennials that enjoy similar growing conditions.
Transform your home and garden with Buddleja davidii Black Knight —a must-have for any season. Order online now for quick and easy shopping, or drop by your local Thompson's Branch to explore it up close and get personalised recommendations.
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EAN code9000000140
- Brand
- AspectFull Sun
- Flower ColourBlue/Purple, green
- Width in ft15ft (450cm)
- Height in ftLarge
- Pot size3 litre pot
- Flowering PeriodJuly/September
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Local deliveries available, please order and pay online for delivery within 5 working days. See our terms & conditions.