How To Grow Sweet Peas {April Flower}

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No cutting garden is complete without at least one row of fragrant, nostalgic sweet peas. I’ve been growing them for what seems like a lifetime now and each spring as they climb their trellises it’s like seeing my dear old friends once again.

1. In warmer regions (zone 7 and above) where winter weather is relatively mild, sweet peas can be sown in fall. Everywhere else, sow in late winter/early spring. Soak the seeds in water for 8-10 hours before sowing. This softens the seed coat and speeds up the sprouting process.

1. In warmer regions (zone 7 and above) where winter weather is relatively mild, sweet peas can be sown in fall. Everywhere else, sow in late winter/early spring. Soak the seeds in water for 8-10 hours before sowing. This softens the seed coat and speeds up the sprouting process.

What You Will Need

  • Top quality sweet pea seed
  • Potting soil
  • Compost
  • Fertilizer
  • T-posts
  • 6ft. tall fencing

Method

  1. In warmer regions (zone 7 and above) where winter weather is relatively mild, sweet peas can be sown in fall. Everywhere else, sow in late winter/early spring.Soak the seeds in water for 8-10 hours before sowing. This softens the seed coat and speeds up the sprouting process.
  2. While the seeds are soaking, fill your planting pots with good quality potting soil. Sweet peas produce abundant roots, so use the deepest pots you can find. Root trainers and 4-inch pots are ideal.
  3. Sow 2 seeds per pot, poking them a half inch into the soil with your finger.
  4. Cover pots with a plastic dome lid to increase humidity and speed up germination. Place in a cool greenhouse, or in a bright window in the house.
  5. Once plant are 4-6 inches tall, pinch out the central growing tip, just above a leaf joint, leaving just two or three leaf nodes. This will encourage the plant to branch vigorously from the base.
  6. Sweet peas are heavy feeders and require a little extra pampering to produce abundantly. Prepare planting beds by applying bone meal, a thick layer of compost or well-rotted manure and a generous dose of natural fertilizer. Mix these ingredients deeply into the soil.
  7. Vines grow rapidly and require a strong structure to climb. Place tall posts roughly 8 feet apart down the row and attach either Hortonova netting or 6-foot tall metal fencing for them to scramble up.
  8. Plant seedlings out around the last spring frost in two rows, one on either side of the trellis, roughly 8 inches apart down the row. As the vines explode into lush growth, it is important to keep them tied to their trellises. Once the vines get going, sweet peas can grow over a foot a week.
  9. Sweet peas love water, and without consistent moisture will fail to thrive. Keeping their thirst quenched during warm weather is crucial, so set up soaker hoses as soon as you plant them to keep their lush growth unchecked.Feed plants weekly with diluted fish and seaweed emulsion.

    To prolong blooming, it’s important that plants don’t set seed, so be sure to harvest and deadhead the flowers frequently.

  10. For the longest vase life, pick when there are at least two unopened flowers at the tip of a stem. Add flower food to the water to extend vase life.

Sweet-Peas

Sweet Pea

COMMON NAME:  sweet pea
GENUS:  Lathyrus
SPECIES:  L. odoratus {annual}
                 L. latifolius {perennial}
FAMILY:  Leguminosae
BLOOMS: early spring
TYPE: annual or perennial
DESCRIPTION: The pastel blossoms of sweet pea come in a lovely array of hues including nearly every color except yellow. Their growth habit varies from creeping to bushy, and their height varies accordingly from 1 to 5 feet. Dainty and fragrant, sweet peas are a welcome sight in spring.
CULTIVATION: Annual varieties of the sweet pea will bloom best if given well-drained soil rich in humus, full sun, and regular watering. Plant seeds in very early spring, as soon as the ground can be worked, for spring blooms. For a climbing type, be sure to supply a trellis or other means of support. Perennial sweet peas are not nearly as exacting in their cultural needs and will survive quite well in average soils with moderate watering.

Plant hybridizers have worked virtual wonders on the original 6-foot-tall, weak-stemmed, small-flowered, but wonderfully fragrant sweet pea. Originally found in fields in Sicily, sweet peas adapted well to growing conditions in England, and by 1722 sweet peas were grown extensively there for their sweet fragrance. By the late 1800’s breeders had created many different varieties of sweet peas, adding beauty to the sweet scent. Their popularity as a garden plant increased dramatically. They were especially popular during the late nineteenth century, and some people consider sweet peas the floral emblem of Edwardian England. Sweet pea was used extensively as a cut flower and was an important part of flower arrangements at every dinner party and wedding. It was also used in corsages, nosegays, tussie-mussies, and boutonnieres. In the language of flowers, sweet pea meant departure or adieu. The dried petals were an important ingredient in potpourris. Sweet pea fever reached a peak in England with the Bi-Centennial Sweet Pea Exhibition in 1900, when more than 250 varieties of sweet pea were displayed at the Crystal Palace in Sydenham. Praise for these delicate, sweet-scented flowers could not be high enough during the bicentennial. The Reverand W.T. Hutchins was reported saying that the sweet pea has “a fragrance like the universal gospel, yea, a sweet prophecy of welcome everywhere that has been abundantly fulfilled.” In 1901 the English National Sweet Pea Society was formed. Superstition holds that if you sow seeds of sweet pea before sunrise on Saint Patrick’s Day {March 17}, you will have blossoms that are larger and more fragrant. Some folks say that sowing them anytime between the feasts of Saint David and Chad {occurring on March 1 and 2} and of Saint Benedict {March 21} will give the same results. The role of sweet pea in the study of heredity should not be overlooked, for it was on this plant that Father Gregor Mendel first performed his famous work on genetics. Sweet pea is often considered the flower for April. The genus name Lathyrus comes from the Greek word for pulse.
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One comment

  • tonytomeo
    April 2, 2018 11:48 am

    That is how they get grown in Southern California. They get sown in autumn, left to grow, and then bloom as soon as the weather is warm enough for them at the end of winter.

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