Category Archives: Herbaceous Perennial

Primula ‘Tantallon’ (Pe)


Primula are herbaceous or semi-evergreen perennials, forming a basal rosette of simple leaves, with salver-shaped or bell-shaped flowers which may be solitary or carried in an umbel or in whorls on an erect stem

Petiolares primulas are rosette-forming herbaceous perennials dying back to a tight rosette or resting bud in winter, with umbels of flowers

‘Tantallon’ is a rosette-forming deciduous perennial to 10cm tall, with toothed, grey-green leaves and clusters of light violet-blue flowers with white eyes, opening in late winter and spring

Common Name: primrose ‘Tantallon’
Family: Primulaceae
Color flower: Blue in Spring and Winter
Hardiness: old H4 (hardy)
Color foliage: Green and Grey/Silver in
Height: Up to 10 cm
Habit: Bushy
Habit: Prone to damage by slugs and snails, vine weevil, aphids, woodlice, earwigs and cutworms
Pruning: No pruning required
Spreadid: South-facing
Time to ultimate height: 2-5 years
Exposure: Grow in deep or partial shade in moist but sharply drained acid soil; protect from excessive winter wet
Garden characteristics: Cottage/Informal Garden, Flower borders and beds, Gravel Garden, Rock Garden or Patio/Container Plants

Primula veris (Pr)


Primula are herbaceous or semi-evergreen perennials, forming a basal rosette of simple leaves, with salver-shaped or bell-shaped flowers which may be solitary or carried in an umbel or in whorls on an erect stem

Primula section primulas can be evergreen or herbaceous perennials, forming a rosette of oblong or obovate leaves and with clusters or umbels of salver-shaped flowers in winter or spring




P. veris is a semi-evergreen perennial to 25cm, with a rosette of distinctly stalked, oblong-ovate leaves and upright stems bearing umbels of nodding, bell-shaped, fragrant rich yellow flowers 1.5cm in width

Common Name: common cowslip
Family: Primulaceae
Color flower: Dark Yellow in Spring
Hardiness: H5 (hardy – cold winter)
Color foliage: Green in Autumn, Spring, Summer and Winter
Height: 0.1-0.5 metres
Habit: Clump-forming
Habit: May be attacked by aphids, vine weevil, slugs, leaf and bud eelworms and glasshouse red spider mite
Pruning: No pruning required
Spreadid: South-facing
Time to ultimate height: 2-5 years
Exposure: Grow as biennials for bedding and in a container or rock garden. Favours a sheltered position in sun or partial shade
Garden characteristics: Cottage/Informal Garden, Flower borders and beds, Low Maintenance, Wildflower meadow or Wildlife Gardens

Dianthus pavonius


Dianthus can be annuals, evergreen perennials or subshrubs with narrow, often greyish leaves and showy flowers that are frequently fragrant

D. pavonius is a cushion-forming evergreen perennial with green or slightly greyish leaves and 10cm stems bearing 1-3 flowers, 2cm wide, with pale or deep pink petals, buff on reverse

Common Name: grass rose pink
Family: Caryophyllaceae
Color flower: Pink and Pale Pink in Summer
Hardiness: H6 (hardy – very cold winter)
Color foliage: Green and Grey/Silver in Autumn, Spring, Summer and Winter
Height: Up to 10 cm
Habit: Bushy
Habit: Aphids and slugs may weaken garden plants
Pruning: No pruning required
Spreadid: South-facing
Time to ultimate height: 2-5 years
Exposure: Grow in well-drained neutral to acid soil in full sun
Garden characteristics: Banks and Slopes, City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds, Gravel Garden, Rock Garden or Patio/Container Plants

Verbascum ‘Norfolk Dawn’


Verbascum can be annuals, biennials, perennials or subshrubs mostly with hairy leaves and 5-petalled, saucer-shaped flowers

‘Norfolk Dawn’ grows to 1.5m tall, with large basal leaves and buff-yellow flowers 2.5cm across opening in flushes over a long period in summer

Common Name: mullein ‘Norfolk Dawn’
Family: Scrophulariaceae
Color flower: Dark Yellow in Summer
Hardiness: H4 (hardy – average winter)
Color foliage: Green in Spring and Summer
Height: 1-1.5 metres
Habit: Bushy
Habit: May be attacked by caterpillars and figwort weevil
Pruning: Remove faded flower spikes
Spreadid: North-facing
Time to ultimate height: 2-5 years
Exposure: Grow in alkaline, poor, well-drained soil in full sun; drought-tolerant plant. In fertile soils, it grows large and needs support
Garden characteristics: City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds or Gravel Garden

Cardamine pratensis ‘Flore Pleno’ (d)


Cardamine are herbaceous perennials with simple, palmately or pinnately divided leaves and short racemes of 4-petalled white, yellow, pink or purplish flowers in spring or summer

‘Flore Pleno’ has a rosette of basal leaves divided into several pairs of rounded segments, and erect stems bearing several pale pink, double flowers in spring and early summer

Common Name: double cuckoo flower
Family: Brassicaceae
Color flower: Pale Pink in Spring and Summer
Hardiness: old H4 (hardy)
Color foliage: Green in Spring and Summer
Height: 0.1-0.5 metres
Habit: Bushy
Habit: Aphids and flea beetles may damage the leaves
Pruning: No pruning required
Spreadid: South-facing
Time to ultimate height: 2-5 years
Exposure: Grow in humus-rich moist soil in full or partial shade
Garden characteristics: Cottage/Informal Garden, Flower borders and beds or Wildflower meadow

Heliopsis helianthoides var. scabra ‘Benzinggold’ AGM


Heliopsis are robust perennials with stiff, erect stems; opposite, lance-shaped leaves and showy rich yellow to orange flowers similar to sunflowers

‘Benzinggold’ is an erect perennial with bright yellow flowers from mid-summer to early autumn

Common Name: North American ox-eye ‘Benzinggold’
Family: Asteraceae
Color flower: Yellow in Autumn and Summer
Hardiness: H5 (hardy – cold winter)
Color foliage: Green in Autumn, Spring and Summer
Height: 1-1.5 metres
Habit: Columnar/Upright
Habit: Prone to slugs
Pruning: Deadhead to prolong flowering
Spreadid: West-facing
Time to ultimate height: 2-5 years
Exposure: Grow in moderately fertile, humus-rich, moist but well-drained soil in full sun. May need support
Garden characteristics: Cottage/Informal Garden, Flower borders and beds, Cut Flowers, Wildlife Gardens or Prairie Planting

Primula ‘Rainbow Blue Shades’ (Rainbow Series) (Pr/Poly) AGM


Primula are herbaceous or semi-evergreen perennials, forming a basal rosette of simple leaves, with salver-shaped or bell-shaped flowers which may be solitary or carried in an umbel or in whorls on an erect stem

‘Rainbow Blue Shades’ is a compact polyanthus to 25cm, with large, slightly fragrant flowers in shades of blue, with a large yellow eye

Common Name: polyanthus ‘Rainbow Blue Shades’
Family: Primulaceae
Color flower: Blue and Yellow in Spring and Winter
Hardiness: H5 (hardy – cold winter)
Color foliage: Green in Autumn, Spring, Summer and Winter
Height: 0.1-0.5 metres
Habit: Clump-forming
Habit: May be attacked by aphids, glasshouse red spider mite, leafhoppers, vine weevil and slugs
Pruning: Cut back after flowering
Spreadid: North-facing
Time to ultimate height: 1-2 years
Exposure: Grow in fertile, humus-rich, moist but well-drained soil in full sun or partial shade, do not allow to dry out in hot weather
Garden characteristics: City/Courtyard Gardens, Cottage/Informal Garden, Flower borders and beds, Garden Edging, Patio/Container Plants or Underplanting of Roses and Shrubs

Heuchera ‘Amber Waves’ PBR


Heuchera are more or less evergreen, clump-forming perennials with attractive, rounded, shallowly palmately lobed leaves and racemes or panicles of small, tubular flowers, often with colourful calyces

‘Amber Waves’ forms a compact clump of ruffled and deeply lobed leaves orange-yellow on the upper surface and bronze beneath, with very small pink flowers in early summer

Common Name: heuchera ‘Amber Waves’
Family: Saxifragaceae
Color flower: Pink in Summer
Hardiness: old H4 (hardy)
Color foliage: Bronze, Orange and Yellow in Autumn, Spring, Summer and Winter
Height: 0.1-0.5 metres
Habit: Bushy
Habit: Prone to vine weevils and leaf eelworms
Pruning: Remove faded flower spikes
Spreadid: North-facing
Time to ultimate height: 2-5 years
Exposure: Grow in a fertile, moist but well-drained, neutral soil in sun or partial shade. The woody rootstock tends to lift out of the ground so mulch annually or lift and replant
Garden characteristics: City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds, Patio/Container Plants, Rock Garden or Underplanting of Roses and Shrubs