How do you grow everlasting sweet peas from seed
Lily Fisher
Published May 09, 2026
Sow seeds 1 inch deep and 3 inches apart in full sun as soon as ground can be worked in early spring. In mild winter areas, where the ground doesn’t freeze, plant in fall; seeds will germinate and form strong root systems, then overwinter to bloom strongly in spring.
How do you plant everlasting sweet pea seeds?
Soaking seeds in water for 24 hours may assist germination. Sow thinly direct into finely raked, moist, warm, weed-free soil where the plants are to flower, 13mm (½”) deep (Germination 10-20 days). Remove the growing tips of plants when 3-4 pairs of leaves have developed to promote more flowers.
How do you propagate perennial sweet peas?
Everlasting sweet peas are both self-seeding and spreads via rhizomes, so propagation is quite easy. Sow sweet pea seeds, in soil above 50° degrees Fahrenheit. If you plan to have sweet peas climb, dig a trench about an inch deep and a foot away from the trellis, you intend the plant to climb.
How long do everlasting sweet peas take to germinate?
Growing Everlasting pea from seed The everlasting pea is germinated in the same way as annual peas, except they are always sown in the Spring. Sow anytime between Feb and March, in seed trays or small containers using a peat free compost. Keep in a warm place around 18C to germinate, which will take around 10 days.Do you soak sweet pea seeds before planting?
Soak the seeds in water for 24 hours before sowing. This softens the seed coat and speeds up the sprouting process. … 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.
How do you grow perennial sweet peas UK?
- Harden off seedlings sown indoors for 10-14 days before planting out to prevent cold shock.
- Prepare the soil, ideally at least four weeks before planting, by mixing in soil improver such as garden compost or manure.
Do perennial sweet peas flower in the first year?
Perennial or everlasting peas lack the fragrance of the annual form, but share the same colourful flowers and return each year, dying back below ground in winter. Use climbing types on fences, through shrubs or hedges or on a bank.
How do you propagate everlasting sweet peas?
- 1: Choose Your Sweet Pea Seedlings. These sweet pea seedlings are about 2 months old and ready to be planted out. …
- 2: Make Your Cuttings. Using a sharp pair of clean scissors, cut a 5 inch piece of stem just above a pair of leaves. …
- 3: Place Cuttings In Water.
How tall do everlasting sweet peas grow?
Lathyrus latifolius ‘Everlasting’ (Sweet pea ‘Everlasting’) will reach a height of 1.8m and a spread of 0.5m after 1-2 years.
Why is my everlasting sweet pea not flowering?If your plants aren’t flowering, it could be that they are not getting enough light (they need a minimum of 8 to 10 hours a day, but preferably nearer to 16 hours). … Lack of flowers can also sometimes be a result of too much nitrogen fertiliser, which produces tall, leafy plants but no flowers.
Article first time published onIs perennial sweet pea invasive?
Annual or Perennial In many areas of North America, the perennial sweet pea (L. latifolius) is an invasive problem, clogging open fields and roadsides. It looks pretty until you realize it’s crowding out other plants and acting like a thug.
Do sweet peas reseed themselves?
Plant Propagation: Sweet Peas are grown from seed. … For an indoor start, plant seeds 4 6 weeks before the last frost in your area. Garden Tip: Nick seeds and soak in water overnight, to speed germination. Once your plants have been established, they usually reseed themselves.
How deep do you plant sweet pea seeds?
Use a good quality compost and sow several sweet pea seeds to a pot. Plant them about 1cm deep, cover with compost and water them well. Sweet peas perform best if their roots are forced to grow in a deep, narrow channel so choose a tall pot to give them a strong start.
When can sweet peas be planted out?
Planting out sweet peas Plant out your sweet peas from late May, once all risk of frost has passed. Before planting, harden them off by putting them out in the day and returning them to a frost-free place at night. Pinch out the tips of young sweet pea plants when they reach about 10cm tall, to encourage bushy growth.
Is it too late to plant sweet peas?
You can plant sweet peas in the autumn or in the spring. Do not plant sweet peas out too late or they will not have much time to flower. It’s recommended you plant your sweet peas before the end of May.
Do sweet peas need full sun?
Make sure you plant the sweet peas outside after the last frost date in your area. Choose a spot in full sun or very light dappled shade with rich, well-drained soil.
Are sweet peas a perennial?
While the sweet pea is considered an annual, there are a few perennial cultivars, but they lack fragrance. … Relatively easy to grow, the main thing to remember is that sweet peas like cool weather, requiring about 50 days of temperatures under 60 degrees to bloom well.
Do perennial sweet peas have a scent?
Much underrated, perennial sweet peas like Lathyrus latifolius and Lathyrus rotundifolius are tough, easy-to-grow plants. Though they lack the scent of the annual types, they’re brilliant for pollinating insects and have colourful flowers that will return year after year.
How do you grow sweet peas in toilet rolls?
- Prepare the cardboard rolls you want to use. …
- Fill the cardboard rolls with compost (any type you have will do). …
- Take your chosen seeds and open the packet. …
- Carefully pick up one seed at a time and place 2 seeds on the top of the compost of each cardboard roll before pushing them down into the compost.
Is Miracle Grow good for sweet peas?
What to feed your sweet peas with? My mother always used dried blood mixed in water. Our garden was on clay and this seemed very successful. I might use tomato fertiliser of Miracle-gro which is a soluble general fertiliser with loads of potash.
Do pea plants come back every year?
Sweet peas grow as annuals throughout U.S. Department of Agriculture plant hardiness zones 7 to 10. They are best started in the cooler months, as soon as the ground can be worked, as the plants prefer cool ground in which to germinate.
What is the best fertilizer for sweet peas?
Sweet peas are heavy feeders, so amend soil well before planting with lots of rich compost or well-rotted manure. During the growing season, fertilize at least twice with a good soil drench of tablespoon each of fish emulsion and liquid kelp per gallon of water.
Can I put sweet peas in a hanging basket?
The scent of sweet peas (Lathyrus odoratus) fill the air in spring and summer. … Dwarf sweet pea varieties are well-suited for growing in hanging baskets, from which their trailing vines cascade. Sweet peas grow as annuals in U.S. Department of Agriculture plant hardiness zones 2 through 11.
How do you prepare sweet peas for soil?
Build up the soil in the area where you intend to plant with compost and well-rotted cow manure. Sweet peas like a neutral pH of around 7. Ask at your local garden centre if your soil pH is likely to be lower than this. If so, sweeten the soil with a couple of handfuls of lime along each metre of planting row.
Can you plant sweet peas in the same place each year?
If you plan to grow sweet peas in the same garden spot again next year, you don’t have to go to the trouble of saving seeds. As the seed pods dry, they pop open and drop their seeds to the ground. Next year’s flowers will grow from these seeds.
Are sweet peas poisonous to dogs?
Any of these plants can be considered toxic to your dog, cat, or other small animals. Although they sound like they should be edible, sweet pea plants are not food. As a matter of fact, they contain the toxic chemical called aminoproprionitrile, which causes musculoskeletal and central nervous system problems.
How do you make sweet peas wigwam?
- First fill a large patio container with good quality multi-purpose compost. …
- Insert five or more 6ft/180cm bamboo canes to form a circle, tying the tops together with garden twine. …
- With a hand trowel, plant three sweet pea seedlings at the base of each support.