This is a great combination of plants against a wall on the south side of your house or the south side of a fence. Low Maintenance that boasts a modern formal visual with white colour throughout the summer months.
The Buxus hedge contains the planting beautifully, remaining evergreen throughout the seasons. The other thing I really like about buxus as a border hedge, is it hides so much - haven’t done the weeds for a couple of weeks? it doesn’t matter - you can’t see them. Whilst buxus isn’t the fastest growing plant, that is a great attribute when it comes to trimming because it means that it only requires one to two trims per year and is very very forgiving.
The Agapanthus is used directly behind the Buxus, I love agapanthus, as it is very tough. The reason I have chosen the variety Finn is due to it being a very small sterile variety that comprises tall flower stems. This will give you a dramatic spray of flowers popping up directly behind the buxus during the summer months.
Then to the Hydrangea, Limelight is one of my favourites, this is a beautiful shrub that is tough as boots, provided it has part shade and is well mulched to retain moistures. Having this planted behind the buxus . The Hydrangea gives the height required to give the planting a bit of substance and break up what it is being planted in front of whether it be a wall of your house or the south side of your fence.
Width required 2.1m
Plant spacing;
Buxus 20cms apart
Agapanthus Finn 75cm Apart
Hydrangea Limelight 1.2m Apart
Foliage Colour: Green
Flower Colour: White
Uses;
South side of a house wall for an entrance planting
South side of a boundary fence to break up the lawn and fence
The border of an existing garden that will provide shade
Plants in this Palette
Agapanthus FinnView Product Page
Agapanthus Finn is a compact, deciduous variety featuring pure white, trumpet-shaped flowers held on sturdy stems during summer. Its neat, clumping foliage of narrow green leaves provides a tidy, structured appearance, making it an excellent choice for borders, edging, or container planting. The striking blue flowers bring vibrant colour to any garden space.
Well-suited to cottage, modern, or coastal gardens, Finn thrives in full sun and prefers well-drained soils. It is hardy, low maintenance, and moderately drought-tolerant once established. Space plants 20–30 cm apart for a dense and uniform display.
Mature size: Grows up to 40–50 cm in height and width, forming a compact, clumping habit.
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Trimming: Cut back foliage in late autumn or winter once it has died back naturally. Remove any yellowing or damaged leaves during the growing season to maintain a tidy appearance.
Deadheading: Remove spent flower stems after flowering to encourage further blooms and prevent self-seeding, especially if managing invasive tendencies.
Fertilising: Feed with a balanced, slow-release fertiliser in spring to promote healthy growth and flowering. Avoid over-fertilising, as this can reduce flower production.
Watering: Water regularly during the establishment phase and dry periods. Established Agapanthus are drought-tolerant but will benefit from occasional deep watering during hot weather.
Pest Control: Check for slugs, snails, and mealybugs. Remove pests manually or use suitable deterrents.
Disease Management: Agapanthus are generally disease-resistant but may develop root rot in poorly draining soil. Ensure soil is well-draining and avoid overwatering.
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Buxus sempervirensView Product Page
Buxus sempervirens, commonly known as English Box, is a classic evergreen shrub favoured for its lush, dark green foliage and versatility in shaping. With its dense, slow-growing habit, this species is ideal for formal hedging, topiary, and structured planting. It responds well to regular trimming and provides year-round structure and greenery.
Well suited to formal, Mediterranean, and traditional garden designs, it is often used to define borders, pathways, or create feature shapes.
Plant in full sun to part shade, in well-drained soil with moderate moisture. For hedging, space 30–40 cm apart to achieve a dense, uniform effect.
Mature size: Reaches approximately 1.5 metres high and wide if left untrimmed, forming a dense, rounded shrub.
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Shop our Flat-packs with buxus: Pre-designed gardens - Choose the length. Get the plan + the plants delivered to your door.
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Trimming: Trim lightly in late spring to maintain shape and encourage dense growth. For hedging or topiary, trim two to three times during the growing season, with the final cut no later than late summer to avoid frost-damaged regrowth.
Deadheading: Not required, as Buxus is grown for its year-round foliage rather than flowering.
Fertilising: Apply a balanced, slow-release fertiliser in early spring. Avoid high-nitrogen formulas, which may promote weak, sappy growth vulnerable to pests and disease.
Watering: Water regularly during the establishment phase and throughout prolonged dry periods. Ensure soil is free-draining to prevent waterlogging, particularly important in heavier soils or containers.
Pest Control: Watch for Buxus psyllid and leafminer—signs include cupped or blistered leaves. Treat with horticultural oil or an appropriate systemic insecticide if needed.
Disease Management: Prone to Buxus blight and root rot. Look out for sudden leaf drop, black spots, or dark lesions on stems. Improve airflow, avoid overhead watering, and remove infected material promptly. Apply fungicide if symptoms persist.