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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Order and pay online and select the day you would like to collect your order from one of our four sites.
Local deliveries available, please order and pay online for delivery within 5 working days. See our terms & conditions.
