Close-up of vibrant Hesperis Purple (Sweet Rocket) by Bishy Barnabees Cottage Garden, glowing in sunlight with a blurred green background and part of a house with a tiled roof and white siding.

Hesperis Purple (Sweet Rocket)

£2.20
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Close-up of vibrant Hesperis Purple (Sweet Rocket) by Bishy Barnabees Cottage Garden, glowing in sunlight with a blurred green background and part of a house with a tiled roof and white siding.
RHS Plants for Pollinators

Hesperis Purple (Sweet Rocket)

Hesperis matronalis

8 reviews

Classic violet-purple Sweet Rocket with powerful violet-and-clove dusk fragrance — the cottage garden classic and Orange Tip butterfly's preferred food plant.

£2.20

Free UK delivery on seed orders over £30

Dispatched from our Norfolk farm — Royal Mail, usually within one working day.

Your growing year

Sow, plant out and flowering months for this variety

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sow
Plant out
In flower
SowPlant outIn flower

At a glance

Height
75-90cm
Spread
45cm
Spacing
40cm
Position
Partial shade to full sun
Colour
Purple
Seeds per packet
500
Soil
Moist, well-drained, fertile soil
Grow guide How to grow Hesperis Purple (Sweet Rocket) Read the full guide →

About this variety

The classic violet-purple sweet rocket, the form that has been filling English cottage gardens with evening scent for centuries. Loose clusters of four-petalled flowers on branching stems at 75 to 90cm.

It is worth understanding what it is for. As a daytime plant it is unremarkable and slightly coarse. As an evening plant it is one of the best things there is; the fragrance of violets and cloves comes up as the air cools and carries a surprising distance. If you have a seat you use after supper, put this behind it.

Biennial, so a rosette in year one and flowers in May and June of year two, then it dies having seeded generously. It will hold a colony indefinitely without further help, and it will also wander, so pull the seedlings you do not want.

It is a brassica, and that matters twice over. The orange tip butterfly lays on the flower buds and seed pods and its caterpillars feed there, so leave some standing rather than tidying it all away. And it gets mildew and flea beetle like any other brassica, particularly in a dry summer.

RHS Plants for Pollinators

This plant has been assessed by the Royal Horticultural Society and recommended as especially beneficial to bees, butterflies and other pollinators. Growing plants like this directly supports UK pollinator populations — something close to our hearts at Salle Moor Hall Farm, where we see the difference a cottage garden full of the right plants can make.

Learn more at RHS.org.uk →
  • 5 stars: 8 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
MRS CHRISTINE E ANDERSON
I can’t wait to sow these next year

I can’t wait to sow these next year.

M
MRS CHRISTINE E ANDERSON
I can’t wait to sow these next year

I can’t wait to sow these next year.

A
Alison Bennett
Happy customer

100% seed germination!! Very good efficient service!

A
Alison Bennett
Happy customer

100% seed germination!! Very good efficient service!

R
Rebecca Patrick
Amazing

Quality and packing of seeds is amazing. Always have great germination too.

R
Rebecca Patrick
Amazing

Quality and packing of seeds is amazing. Always have great germination too.

g
graham Coffer
Hesperus Seeds

Arrived on time in great packaging,great quantity,clear instructions too.

g
graham Coffer
Hesperus Seeds

Arrived on time in great packaging,great quantity,clear instructions too.