Skip to site navigation

Lathyrus odoratus 'Cathy' AGM

Home  |  Plants > Plant Selector > Lathyrus odoratus 'Cathy' AGM

© RHS 1999

Characteristics

Plant type

Climber/Wall Shrub or Annual/Biennial

Habit

Climbing

Fragrance

Flower

Toxicity

Acute ingestion may cause mild stomach upset

Resilience

Hardiness

H2 (tender - cool or frost-free greenhouse)

Colour

Flower

Cream in Autumn and Summer

Foliage

Green and Grey/Silver in Autumn, Spring and Summer

Size

Ultimate height

1.5-2.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

1 year


Preferred common name

sweet pea 'Cathy'

Family

Papilionaceae


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

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

  • South-facing or East-facing
  • Exposed or Sheltered

Cultivation

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

Soil

  • Well-drained
  • Acid, Alkaline or Neutral
  • Sand or Loam

Propagation

Propagate by seed. Sow in a cold frame in early autumn, early spring or in-situ in mid-spring

Suggested planting locations and garden types

City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds or Patio/Container Plants


How to care

Pruning

Deadhead regularly and cut back after flowering

Pests

May be attacked by aphids, slugs, snails and thrips

Diseases

May be subject to powdery mildew, Fusarium wilt, foot rot, root rot and a virus