Create Your Garden

Lathyrus odoratus ‘Gwendoline’ (Sweet Pea)

Sweet Pea 'Gwendoline', Spencer Sweet Peas

AGM Award
Lathyrus Odoratus 'Gwendoline',Sweet Pea 'Gwendoline', Fragrant Flowers, Pink Flowers, White Flowers, Annuals, Annual plant, Cut flowers, deer resistant flowers

Strongly scented, Lathyrus odoratus ‘Gwendoline’ is a vigorous climbing annual with large, 2 in. across (5 cm), gently ruffled, magenta-pink flowers adorned with white petal bases. Prolific for cutting or showing, this Spencer Sweet Pea is a lovely addition to the garden and perfect for containers where its dramatic blossoms and rich perfume can be enjoyed. Ideal for providing cut flowers that will fill your home with their heady perfume too. Did you know that the more you pick them the more they will continue to flower?

  • Native to the Mediterranean region, Sweet Peas grow and bloom best in cool, mild climates where they enjoy a long blooming season, extending from spring to fall. Sweet Peas resent hot and humid weather.
  • Recipient of the prestigious Award of Garden Merit of the Royal Horticultural Society for its outstanding merits
  • Grows up to 6-8 ft. tall (180-240 cm) and 12 in. wide (30 cm).
  • Sweet Peas love full sun or light shade in rich, humusy, medium moisture, well-draining soils. The best performance occurs in cool soils with good air circulation. A heavy application of mulch will help keep the roots cool and moist. Incorporate well-rotted organic manure before planting and apply a balanced liquid fertilizer every two weeks throughout the growing season. Avoid overhead watering.
  • Sweet Peas are wonderful when massed in borders, containers, or climbing and twining on arches or arbors.
  • Attractive to bees and butterflies, deer generally ignore Sweet Peas.
  • In Zone 7 or colder: Get a jump on the season by starting Sweet Peas indoors. Plant Sweet Peas out into the garden in very late winter or early spring as soon as the soil is dry enough. In Zones 8, 9, or 10: Plant Sweet Peas in late fall, so they can develop and bloom in late winter and early spring. Before planting, soak the seeds in water for 24 hours in order to hasten germination. You do not need to soak seeds in a temperate climate. Once planted, germination can take 7 to 15 days, depending on the soil temperature.
  • To encourage bushy growth, pinch off the tops when plants are 6 in. tall (15 cm), not before or you will promote side-shoot development.
  • Deadhead spent flowers regularly to encourage new blooms and maintain a neat appearance. Do not hesitate to cut flowers for your bouquets as this will force your Sweet Peas to produce additional stems for bloom. Cut back hard and fertilize if you notice little flowering after the first flush of bloom.
  • Propagate by seed. Sow in a cold frame in early autumn, early spring or in-situ in mid-spring
  • Sweet Peas are susceptible to slugs, snails, Pythium root rot, powdery mildew, rust, gray mold, and various leaf spots.
  • Sweet peas are NOT edible! Acute ingestion may cause mild stomach upset.

Requirements

Hardiness 2 - 11
Heat Zones 1 - 8
Climate Zones 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Annuals, Climbers
Plant Family Leguminosae
Genus Lathyrus
Common names Sweet Pea
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early, Mid, Late)
Fall
Height 6' - 8'
(180cm - 240cm)
Spread 1' (30cm)
Spacing 2" - 3"
(5cm - 8cm)
Maintenance Low
Water Needs Low, Average
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Fragrant, Plant of Merit, Showy
Tolerance Deer
Attracts Bees, Butterflies
Garden Uses Arbors, Pergolas, Trellises, Beds And Borders, Patio And Containers, Wall-Side Borders
Garden Styles City and Courtyard, Informal and Cottage, Mediterranean Garden
How Many Plants
Do I Need?
Guides with
Lathyrus
Not sure which Lathyrus to pick?
Compare Now

Alternative Plants to Consider

Lathyrus vestitus (Pacific Pea)
Lathyrus odoratus ‘Mollie Rilstone’ (Sweet Pea)
Lathyrus odoratus ‘Dorothy Eckford’ (Sweet Pea)
Lathyrus × hammettii ‘Turquoise Lagoon’ (Sweet Pea)
Lathyrus odoratus ‘Leominster Boy’ (Sweet Pea)
Lathyrus odoratus ‘Senator’ (Sweet Pea)

Find In One of Our Guides or Gardens

April Birth Flower: What is my Birth Flower?
Best Annual Flowers and Plants for Full Sun
Most Fragrant Sweet Peas
Lathyrus odoratus (Sweet Pea)
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
Buy Plants

Requirements

Hardiness 2 - 11
Heat Zones 1 - 8
Climate Zones 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Annuals, Climbers
Plant Family Leguminosae
Genus Lathyrus
Common names Sweet Pea
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early, Mid, Late)
Fall
Height 6' - 8'
(180cm - 240cm)
Spread 1' (30cm)
Spacing 2" - 3"
(5cm - 8cm)
Maintenance Low
Water Needs Low, Average
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Fragrant, Plant of Merit, Showy
Tolerance Deer
Attracts Bees, Butterflies
Garden Uses Arbors, Pergolas, Trellises, Beds And Borders, Patio And Containers, Wall-Side Borders
Garden Styles City and Courtyard, Informal and Cottage, Mediterranean Garden
How Many Plants
Do I Need?
Guides with
Lathyrus
Not sure which Lathyrus to pick?
Compare Now

Gardening Ideas

Plant Calculator

How many Lathyrus odoratus ‘Gwendoline’ (Sweet Pea) do I need for my garden?

Input your garden space dimensions

Your Shopping List

Plant Quantity
Lathyrus odoratus ‘Gwendoline’ (Sweet Pea) N/A Buy Plants

Please Login to Proceed

You Have Reached The Free Limit, Please Subscribe to Proceed

Subscribe to Gardenia

To create additional collections, you must be a paid member of Gardenia
  • Add as many plants as you wish
  • Create and save up to 25 garden collections
Become a Member

Plant Added Successfully

You have Reached Your Limit

To add more plants, you must be a paid member of our site Become a Member

Update Your Credit
Card Information

Cancel

Create a New Collection

Sign Up to Our Newsletter

    You have been subscribed successfully

    Join Gardenia.net

    Create a membership account to save your garden designs and to view them on any device.

    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

    Join now and start creating your dream garden!

    Join Gardenia.net

    Create a membership account to save your garden designs and to view them on any device.

    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

    Join now and start creating your dream garden!

    Find your Hardiness Zone

    Find your Heat Zone

    Find your Climate Zone