Viburnum × bodnantense 'Charles Lamont' AGM
This upright and long-lived deciduous shrub bears clusters of sweetly scented, rose-tinted flowers from October through to March.
If you have room, plant in a group to intensify the fragrance; even if the flowers get frosted, new buds will open within days. Leaves open bronze-tinted, maturing to dark green.
To maintain an upright habit, plant in a sunny position in humus-rich soil.
Hamamelis × intermedia 'Arnold Promise' AGM - witch hazel
Bright yellow, fragrant, spidery flowers adorn the bare branches of this deciduous shrub in mid-late winter.
Witch hazels do well in sun or partial shade but need an acid to neutral soil that drains well and doesn't dry out too much in summer.
This is a large shrub, with good autumn colour, growing up to 4m (13ft) height and spread in 10-20 years, but can be kept under control with an annual prune after flowering.
Erica × veitchii 'Exeter' AGM
The first time I saw this plant was in the Winter Garden at RHS Garden Rosemoor; I was astounded by the mass of exquisite bell-shaped fragrant flowers opening from rosy pink buds.
This bushy evergreen shrub will perform best in well-drained, acid soil in a sunny position.
This medium sized evergreen shrub is generally hardy but can suffer in severe winters or exposed positions. The fragrant purplish-pink and white flowers are a delight; useful in brightening up a shady border in winter.
It has a compact habit but gives height in a planting scheme reaching a maximum height of 2.5m (8ft) and spread 1.5m (4ft) in 10 years. Enjoys fertile, humus-rich soil that doesn't dry out too much in summer.
Chimonanthus praecox - wintersweet
Grow this plant trained against a sunny wall and it will reward you with yellow waxy flowers showing maroon streaks on the inner petals.
The spicy fragrance is delicious and is stronger in the species than many of the showier cultivars. Be patient as it may not flower for a couple of years, but it is well worth the wait.