Monthly Archives: November 2015

Spring Seeds

It is time to think about spring seeds.


Lathyrus odoratus ‘Harlow Carr’


Lathyrus can be annuals or herbaceous or evergreen perennials, mostly climbing, with pinnate leaves ending in a tendril, and showy pea-like flowers, fragrant in some species

‘Harlow Carr’ is an annual climber with greyish-green foliage and long-stalked racemes of fragrant, cream flowers, flushed with light pink

Common Name: sweet pea ‘Harlow Carr’
Family: Papilionaceae
Color flower: Cream and Pale Yellow in Autumn and Summer
Hardiness: old H4 (hardy)
Color foliage: Green and Grey/Silver in Autumn, Spring and Summer
Height: 1.5-2.5 metres
Habit: Climbing
Habit: May be attacked by aphids, slugs, snails and thrips
Pruning: Deadhead regularly and cut back after flowering
Spreadid: North-facing
Time to ultimate height: 1 year
Exposure: Grow in humus-rich, fertile, well-drained soil in full sun or light dappled shade. Incorporate well-rotted organic manure before planting and apply a balanced liquid fertilizer every two weeks when in growth. Deadhead regularly to prolong flowering
Garden characteristics: City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds or Patio/Container Plants

Myriophyllum spicatum


Myriophyllum can be submerged or marginal aquatic rhizomatous perennials, with finely dissected submerged leaves and small or minute flowers, solitary or in spikes from the leaf axils

M. spicatum is a submerged aquatic perennial with branched shoots bearing whorls of leaves pinnately divided into hairlike segments, with minute dull red flowers in spikes above the water surface, in summer

Common Name: spiked water milfoil
Family: Haloragaceae
Color flower: Dark Red in Summer
Hardiness: old H4 (hardy)
Color foliage: Green in Autumn, Spring and Summer
Height: Up to 10 cm
Habit: Submerged
Habit: Generally pest free
Pruning: Cut back regularly to avoid excessive growth
Spreadid: East-facing
Time to ultimate height: 5-10 years
Exposure: Grow in baskets of loamy soil in water at a depth of 1m in full sun
Garden characteristics: Low Maintenance or Wildlife Gardens

Armeria juniperifolia AGM


Armeria are evergreen perennials forming tufts or mats of strap-shaped or linear leaves, with long-stalked, dense clusters of small cup-shaped flowers

A. juniperifolia is a compact evergreen perennial forming dense mats to 30cm in width. Pale pink flowers are borne in late spring, on stems 2-5cm in height, above dark green, needle-like leaves

Common Name: juniper-leaved thrift
Family: Plumbaginaceae
Color flower: Pale Pink in Spring
Hardiness: H5 (hardy – cold winter)
Color foliage: Dark Green in Autumn, Spring, Summer and Winter
Height: Up to 10 cm
Habit: Mat forming
Habit: Generally pest free
Pruning: No pruning required
Spreadid: North-facing
Time to ultimate height: 5-10 years
Exposure: Grow in well-drained soil, suitable for rock garden and trough or the front of a border
Garden characteristics: City/Courtyard Gardens, Cottage/Informal Garden, Garden Edging, Gravel Garden, Ground Cover, Patio/Container Plants or Rock Garden

Mimulus ‘Highland Red’ AGM


Mimulus can be annuals, perennials or evergreen shrubs, with paired leaves and 2-lipped tubular or trumpet-shaped flowers in terminal racemes or in the leaf axils

‘Highland Red’ is an herbaceous perennial, often short-lived, forming a compact mat of oval leaves, with bright crimson, trumpet-shaped flowers 3-4cm long

Common Name: monkey flower ‘Highland Red’
Family: Phrymaceae
Color flower: Red in Summer
Hardiness: H5 (hardy – cold winter)
Color foliage: Green in Spring and Summer
Height: Up to 10 cm
Habit: Mat forming
Habit: Slugs and snails may be a problem
Pruning: No pruning required
Spreadid: North-facing
Time to ultimate height: 2-5 years
Exposure: Prefers moisture retentive soils in sun or partial shade. Short-lived
Garden characteristics: City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds, Patio/Container Plants or Rock Garden

Lathyrus odoratus ‘Cathy’ AGM


Lathyrus can be annuals or herbaceous or evergreen perennials, mostly climbing, with pinnate leaves ending in a tendril, and showy pea-like flowers, fragrant in some species

‘Cathy’ is a vigorous annual climber to 2m, with grey-green foliage and long-stalked racemes of up to four fragrant flowers 4.5cm wide, with ruffled creamy-white petals, opening from summer to early autumn

Common Name: sweet pea ‘Cathy’
Family: Papilionaceae
Color flower: Cream in Autumn and Summer
Hardiness: H2 (tender – cool or frost-free greenhouse)
Color foliage: Green and Grey/Silver in Autumn, Spring and Summer
Height: 1.5-2.5 metres
Habit: Climbing
Habit: May be attacked by aphids, slugs, snails and thrips
Pruning: Deadhead regularly and cut back after flowering
Spreadid: North-facing
Time to ultimate height: 1 year
Exposure: Grow in humus-rich, fertile, well-drained soil in full sun or light dappled shade. Incorporate well-rotted organic manure before planting and apply a balanced liquid fertilizer every two weeks when in growth. Deadhead regularly
Garden characteristics: City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds or Patio/Container Plants

Lathyrus odoratus ‘Cathy’ AGM


Lathyrus can be annuals or herbaceous or evergreen perennials, mostly climbing, with pinnate leaves ending in a tendril, and showy pea-like flowers, fragrant in some species

‘Cathy’ is a vigorous annual climber to 2m, with grey-green foliage and long-stalked racemes of up to four fragrant flowers 4.5cm wide, with ruffled creamy-white petals, opening from summer to early autumn

Common Name: sweet pea ‘Cathy’
Family: Papilionaceae
Color flower: Cream in Autumn and Summer
Hardiness: H2 (tender – cool or frost-free greenhouse)
Color foliage: Green and Grey/Silver in Autumn, Spring and Summer
Height: 1.5-2.5 metres
Habit: Climbing
Habit: May be attacked by aphids, slugs, snails and thrips
Pruning: Deadhead regularly and cut back after flowering
Spreadid: North-facing
Time to ultimate height: 1 year
Exposure: Grow in humus-rich, fertile, well-drained soil in full sun or light dappled shade. Incorporate well-rotted organic manure before planting and apply a balanced liquid fertilizer every two weeks when in growth. Deadhead regularly
Garden characteristics: City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds or Patio/Container Plants

Hydrangea macrophylla ‘Nigra’ (H)


Hydrangea can be deciduous or evergreen shrubs, or self-clinging climbers, with flowers in clusters usually comprising both small fertile and more showy sterile flowers; often good autumn colour

Hortensia hydrangeas are compact bushy deciduous shrubs with broadly ovate leaves and rounded flower clusters composed almost entirely of showy sterile flowers

‘Nigra’ is a small deciduous shrub with distinctive purplish-black stems and ovate leaves. Flowers rose-pink or bluish, in rounded Hortensia-type heads

Common Name: hydrangea ‘Nigra’
Family: Hydrangeaceae
Color flower: Blue and Pink in Summer
Hardiness: old H3-4 (intermediate between H3 and H4)
Color foliage: Dark Green in Autumn, Spring and Summer
Height: 1-1.5 metres
Habit: Bushy
Habit: Aphids, capsid bug and hydrangea scale may be a problem
Pruning: Pruning group 4
Spreadid: East-facing
Time to ultimate height: 5-10 years
Exposure: Grow in moist but well-drained soil in full sun or partial shade
Garden characteristics: City/Courtyard Gardens, Cottage/Informal Garden, Flower borders and beds, Cut Flowers or Patio/Container Plants