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A picture of a  Sweet Pea 'Spencer Mix'

Sweet Pea 'Spencer Mix'

Lathyrus odoratus (Spencer Group)

Photo by thejsheppard (All rights reserved)

Full Sun
Moderate care
Moderate watering


RHS hardiness


Minimum temperature

Expected size








3 months to reach maturity


  • spring
  • summer
  • autumn
  • winter

This plant has a strong fragrance

Sweet Pea 'Spencer Mix' Overview

Lathyrus odoratus (Spencer Group) is a range of long-stemmed varieties and carry heavily-scented, wavy petalled flowers that can be traced back to L. 'Lady Spencer'. Discovered in 1900 by Silas Cole, the gardener at Althorp, Earl and Countess Spencer's estate, this variety became very popular and has been cultivated ever since. Commonly known as Sweet Pea, the Spencer Mix can be a variety of colours and can reach 2m in height, climbing through the use of tendrils when given support.

Common problems with Sweet Pea 'Spencer Mix'

Sweet Pea 'Spencer Mix' Companion Plants

Plant with spring annuals and small shrubs.

How to harvest Sweet Pea 'Spencer Mix'

Pick flowers regularly in spring and summer. This will encourage the plant to produce more blooms.

How to propagate Sweet Pea 'Spencer Mix'


Sweet peas are best sown in autumn or spring. To help them germinate, soak the seeds overnight to soften their outer coats. Direct sow outdoors in April and May. It is vital to prepare your soil well. Turn the soil over to a depth of 30cm and add plenty of compost. In the well-prepared soil, make holes 2-3cm deep and about 10-15cm apart. Drop seeds in and press down firmly on soil. Keep moist until they start sprouting. Alternatively, you can start indoors, either in Sept and Oct. or from Jan to March. Sow 5 seeds into 5cm pots, lightly cover with compost. Water after sowing, but not again until after the seedlings have emerged. Maintain the pots between 10 and 15°C (50-60°F). Plant out after the risk of frost has passed.

Special features of Sweet Pea 'Spencer Mix'

Attracts useful insects

Bees are attracted to the flowers.

Attractive flowers

Other uses of Sweet Pea 'Spencer Mix'


This is a must for any spring garden, beautiful flowers with strong fragrance and long lasting in the vase.

Cut flowers

Varieties have been bred as cut flowers, with longer stem lengths.


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