AnnualAGM

Sweet Pea Parfume Promise

Lathyrus odoratus 'Parfume Promise' — Hardy Annual H3; Spencer type; RHS AGM

£2.55approx. 25 seeds

Large ruffled rose-pink and white bicolour Sweet Pea — the romantic cottage Spencer with traditional fragrance and exhibition-quality cutting stems. RHS AGM.

Sowing months
JanFebMarAprMayJunJulAugSepOctNovDec
Height
up to 2.4m
Spread
30cm
Spacing
20-30cm
Position
They perform best in full sun, ideally receiving at least 6 hours of direct sunlight a day.
Soil
They demand moist soil to support their thirsty root system, but the roots must not become waterlogged or they will rot.
Grow guide
How to grow Sweet Pea Parfume Promise
Read the full guide →
About this variety

Lathyrus odoratus 'Parfume Promise' Spencer Sweet Pea 'Parfume Promise' (RHS AGM)

The prettiest bicolour Sweet Pea — large ruffled blooms in vibrant rose-pink and pure white, with traditional fragrance and exhibition-quality long straight stems. RHS AGM holder. 'Parfume Promise' is the romantic cottage Spencer bicolour combining big flowers with the cottage scent that defines the genus.

This is the bicolour Spencer Sweet Pea that delivers proper romantic cottage character. Large ruffled blooms in vibrant rose-pink and pure white — the bicolour effect creating visual interest that no solid-coloured Sweet Pea can match. RHS Award of Garden Merit holder — confirming its status as a reliable high-performance plant perfectly suited to the British climate, providing exceptional fragrance and vigorous climbing growth. Hardy annual (H3). Spencer-type breeding for the characteristic large ruffled bloom form, on long straight stems ideal for cutting.

A note on growing

Standard Sweet Pea cultivation (autumn sow October–November or spring sow January–March; soak seeds 2–4 hours; plant out April–May in full sun in rich fertile soil; provide sturdy support immediately; pick daily).

⚠️ Toxicity warning: seeds toxic if eaten.

Where it shines

In cottage cutting gardens for the romantic pink-and-white bicolour palette. As wedding flowers for cottage-themed weddings where pink-and-white provides the central wedding floral palette. In cottage borders against tall vertical supports. As a textbook "cottage romance" Sweet Pea — 'Parfume Promise' is the variety to grow if the goal is the quintessential cottage romantic feel.

Plant alongside

For a meadow-style cottage bouquet partnership, pair 'Parfume Promise' with Ammi majus — the delicate frothy white lace provides perfect textural contrast to the solid ruffled Sweet Pea blooms, creating a meadow-style bouquet in your garden. For the pastel carpet: planting a carpet of pink and white Forget-me-not 'Victoria Mixed' at the base of your Sweet Pea wigwam creates a beautiful "layered" effect where colour flows from the ground up the vines. With Cosmos 'Daydream' for matching white-and-blush ombré.

Plant alongside

Sweet Pea Parfume Promise pairs beautifully with these cottage garden classics

RHS Award of Garden Merit

The RHS Award of Garden Merit is given to plants of outstanding excellence for ordinary garden use. To earn this award a plant must be of good constitution, available to the gardening public, and perform reliably across a range of UK growing conditions. It is one of the most trusted plant recommendations in British gardening and a genuine mark of quality.

Learn more at RHS.org.uk →