Most "blue" sweet peas are actually various shades of violet and purple, Getty Images.
- Site plants in a full sun to part-shade location in well-drained garden loam that has been enriched with organic matter; mulch well.
- Provide support for climbing types (stakes and netting, wigwams or pea sticks); keep plants well watered during dry spells.
- Never allow plants to set seed or they’ll stop flowering; cut blooms for vases every few days and deadhead assiduously.
- Aphids or mildew may be a problem in some seasons; treat with organic control methods.
Flecked and bicolored flowers are always popular with gardeners, Getty Images.
Savour their scent
It wasn’t until 2001 that researchers at the University of Stirling (Scotland) discovered that six major chemical constituents give sweet peas their unique scent. Individually these chemicals are present in other flowers, but sweet peas are the only plants that pack them all into one intoxicating bloom.
Also present in: Damask rose
Also present in: Rose, pelargonium
Also present in: Jasmine, lavender
Also present in: Magnolia, orange
Also present in: Basil, marigold
Also present in: Canola, buckwheat