The ideal annual plant is the sweet pea (Lathyrus odoratus variety and their hybrids). They are simple to grow, bloom with fury, and even a tiny bunch of them can fill a room with their enticing aroma. View More
The ideal annual plant is the sweet pea (Lathyrus odoratus variety and their hybrids). They flower quickly, are simple to grow, and a little bunch may exude the aroma of summer. They can be grown in pots or along borders, occupy very little area, and, with the right support, self-climb and self-cling. Fantastic and necessary plants for any floral garden.
Sweet Pea Flower Summary
Positives: It blooms for free from May to September, is fragrant, comes in a variety of colors, and makes a good cutting flower.
Placement: Preferred in a sunny area with rich, well-drained soil and climbing assistance
Your sweet pea growing tutorial video:
Choosing Sweet Peas
Our sweet peas are developed in unique plugs where they quickly root and spread out without having their roots disturbed when planted. View More
Our sweet peas are developed in unique plugs where they quickly root and spread out without having their roots disturbed when planted. In both instances, they are produced from the finest seed we are able to locate, sowed in the finest compost, and fertilized with a slow-release fertilizer to maintain their roots until they are planted outside. And they sprout in the best possible environment—a very huge, airy polytunnel that is chilly, permits frost to contact it but never freezes solidly. This basically sums up why you should select these sweet pea seeds; they are the greatest.
Planting Sweet Pea Seedlings
Before planting, erect a support for the peas to climb. After that, plant your sweet peas in thoroughly prepared, moist soil that contains. View More
Before planting, erect a support for the peas to climb. Afterward, plant your sweet peas in thoroughly prepared, moist soil that is rich in organic materials (ideally incorporated the previous autumn). You can also grow plants in pots that are big enough to hold them; allow 3 to 4 liters per plant. A planting medium made of 50 percent compost, 40 percent topsoil, and 10 percent well-rotted manure is perfect. However, general-purpose compost works just fine but yields fewer flowers. Sweetpeas should be placed 5 cm away from their supports and 10-15 cm apart. The dirt should reach the first side shoot’s level and the hole should be large enough to allow the longest root. To enable the Sweet Pea to naturally climb the supports, use wire, netting, or twine between them. Still, you’ll need to fasten them to the frame. Check them roughly every ten days as they grow quickly.
Growing Sweet Peas
The main requirement is adequate water because sweet pea plants are both hungry and thirsty. So, give the soil around sweet peas plenty of water. View More
The main requirement is adequate water because sweet pea plants are both hungry and thirsty. Because of this, sweet pea soil should always be moist. They also require light; while sweet peas can tolerate some shade, full sun produces superior flowers. Harvest the flowers as they grow and then pick them again if they begin to form seedpods. Never allow it to happen, or they will completely stop blossoming. As long as you can, keep choosing and tying in. For more information on how to train sweetpeas, see the website. During the growing season, fertilize with a high potash and phosphate fertilizer to promote flowering. You don’t need more nitrogen since sweet peas actively repair nitrogen from the air into the soil. If you are on sandy soil, homemade comfrey liquid or tomorite are also recommended.
Buying Sweet Peas
Because the best seeds produce the greatest plants, we choose our seeds very carefully. Our seedlings vary by season. View More
Because the best seeds produce the greatest plants, we choose our seeds very carefully. Our seedlings are raised in deep plugs and sold in packs of four with quantity discounts if you purchase more of any one variety, depending on the season. Delivery occurs when the plants are prepared and the weather is suitable, but typically takes place between the end of February and the middle of June (for a late flowering show). Of course, we’ll email you to let you know your Sweet Peas have arrived. Because they are not meant to endure so long, annual plants are not covered by our year guarantee.
Is the season for sweet peas?
Depending on where you live and how hot your summers get will determine when the sweet pea (Lathyrus odoratus) flowers. With their fragrant pea-like flowers blossoming in a variety of colors, these annual climbers are eye-catching additions to containers or outdoor spaces. Success is ensured by planting at the appropriate time of year for your locality.
Tip
Depending on where you live, the sweet pea flowering season happens during several seasons. Flowers will bloom in the late spring and into the fall in regions with cooler summer temperatures. Those who reside in warmer climates can look forward to flowers in the winter and spring.
The best sweet pea is…
These sweet peas are some of our favorites. They are consistently excellent varieties and have a wonderful aroma. We grow about 50 varieties a year. We have discovered the best sweet peas for cutting and garden growth via expertise. With the exception of some outstanding extremely old sweet peas, all sweet pea varieties decline over time. When this happens, we will test out similar colors and switch out the old variety for the new one. Linda Carole is a prime example of this (see below).
Lathyrus odoratus ‘Linda Carole’
developed by Derek Heathcote, who has created a number of excellent varieties since opening his company in 1992. Similar to “Mars,” this stunning bloom appears to grow better from seed. It has a thin line (referred to as a “picotee” in sweet pea jargon) that surrounds the white background and has a carmine stripe. For a new kind, the aroma is excellent. Since we have been cultivating Linda Carole for almost four years, we especially suggest it for cutting.
Lathyrus odoratus ‘Matucana’
an ancient kind that has been around for a long time. Of all the highly aromatic sweet peas, it is arguably the most well-known. The bloom is smaller than contemporary types, but it makes up for its little size with an exquisite perfume. The smellometer reads “10/10”! a bushy plant with lots of blossoms. By tucking the flowers into the back of a larger bouquet, the fragrance will permeate the entire arrangement.
Lathyrus odoratus ‘Our Harry.’
When we first began producing sweet peas, we grew popular blue kinds like “Noel Sutton.” I fell in love with this pea the moment I spotted it at the Chelsea Flower Show one year, across a busy floral tent. The large, fragrant blue blossoms and crisp, translucent color definitely catch my eye. We have chosen to set aside a trial bed for blue sweet peas for 2019 because a variety of varieties that are identical to these blue sweet peas have lately entered the market. It will be intriguing to see if the ‘Our Harry’ can match the exquisite quality and aroma.
Sweet Pea ‘Valerie Harrod.’
is a standout addition to any collection of sweet peas since it differs from most other peas in having a peachy tone in its soft pink blossoms. This sweet pea is for aficionados. It has a pleasant aroma for a Spencer sweet pea, makes large, gorgeous flowers, and grows quickly. The color of sweet pea ‘Evening Glow’ is comparable. Add some pastels to the mix or use complementing hues like “Our Harry” or “Kingfisher.” Our sweet pea supports appear to be quite healthy and full of bloom right now.
Grandiflora Sweet Peas
The ancient sweet pea kinds are truly amazing. Grandiflora sweet peas, Antique sweet peas, or Heritage sweet peas are other names for them. Although their flowers are smaller than those of modern or spencer kinds, their plants are very garden-worthy due to their bushiness and plenty of flowers. Additionally, they are the ideal sweet pea for containers. Grandiflora sweet peas are the ones to cultivate if you want the best-scented sweet peas because of the exceptional amount of perfume they create. The crimson “Queen Alexandra” is shown in the background of this image, with “The Major” in the foreground.
There are more than 50 different types of sweet peas on display in the gardens, and you can purchase our specially selected assortment of sweet pea seeds there or online through our store.
What time of year do sweet peas grow?
The fragrant, sweet aroma that is released by the blossoms of annual sweet peas (Lathyrus odoratus) gives them their name. The fall, winter, and early spring garden seasons in warm, Mediterranean settings are perfect for this annual flowering vine because it prefers mild temperatures. In the spring and early summer, sweet peas grow best. Plant hardiness zones 4 through 7 of the United States Department of Agriculture are suitable for perennial sweet peas (Lathyrus latifolia). Depending on the cultivar, sweet pea blossoms come in a variety of hues, including white, purple, pink, red, orange, blue, and lavender.
Depending on the species and cultivar, it can take sweet peas 90 to 120 days from seed sowing to start flowering.
Choosing sweet peas and perennial peas
The major consideration is whether or not aroma is crucial to you when deciding between perennial Lathyrus and sweet peas. Decide if you would then like an annual or perennial plant. There are several color choices available as well as climbing and bushier varieties.
Fragrance
Choose sweet peas (Lathyrus odoratus), which are generally very fragrant, if you enjoy a pleasant garden and sweet-smelling flowers for indoor use.
Lord Anson’s blue pea (Lathyrus nervosus), a perennial Lathyus, is an exception to the rule since it does have a perfume.
How long the plant lasts
After setting seed, sweet peas (Lathyrus odoratus) only have a one-year lifespan. However, don’t let this deter you because they are quite simple to grow from seed. Lathyrus latifolius is an example of a perennial species that returns every year, however there are fewer options and they typically lack smell.
Colour
The annual sweet pea (Lathyrus odoratus) has a large variety of blossom colors, including bicolored varieties. However, the perennial varieties do come in some uncommon colors, like yellow and orange.
Habit
The majority of Lathyrus are climbing plants, therefore support them with canes, netting, or allow them to climb over a bank or through a bush. For ground cover and pots, clumping varieties like the spring-flowering Lathyrus vernus and dwarf bushy sweet pea varieties like “Snoopea” and “Bijou Mixed” are excellent choices.
Buying sweet peas and perennial peas
Although many garden centers also sell a few sweet pea seeds in packets, the largest assortment of sweet pea seeds may be acquired from internet seed suppliers. In the spring, several nurseries and garden centers sell pots of germinated sweet pea seedlings that can be divided into individual plants and raised in pots before being planted outside.
There are a few seed specialists who sell perennial Lathyrus seeds, like Lathyrus latifolius, but many gardeners opt to purchase the plants instead. The plant you’re looking for can be found using our Find a Plant tool.
When to plant sweet peas and perennial peas
- Annual sweet peas should be sown either in late January or early April and planted out in April.
- Sow perennial Lathyrus in the spring or the fall.
Where to plant sweet peas and perennial peas
Locate a sunny area where there is room for the plant to grow or to bush out (depending on its habit). Also acceptable is a little light shade, especially for Lathyrus grandiflorus.
How to plant sweet peas and perennial peas
- To avoid cold shock, indoor seedlings should be hardened off for 10–14 days before being transplanted outside.
- Ideally, four weeks before planting, enhance the soil by incorporating a soil conditioner like garden compost or manure.
- Sprinkle general-purpose fertilizer, as directed on the pack, into the area where you plan to plant it, such as Growmore, Vitax Q4, or blood, fish, and bones.
- Before planting, water your plants thoroughly to hydrate the roots.
- Remove pots from larger plants and ease seedlings out of modules or pots while being careful not to snap or crush the stems.
- Plants should be separated by 20–30 cm (8–1 ft).
- Place climbing plants near to their intended support (within 5-7.5cm or 2-3in), with two plants at the foot of each cane if they are climbing a wigwam.
- After planting, water once more to help the soil surrounding the roots settle.
Use garden twine or sweet pea support rings to secure young climbing plant shoots to canes, pea sticks, netting, trellis, or shrub shoots that they will be growing up. Tendrils in contact with supports will naturally start to cling on, but if any are straying or in danger of snapping, keep tying in new shoots.
In dry weather, check on plants in the ground every 3 to 4 days and on those in containers every day because they won’t flower as well if they become too dry. Each time you water, be sure to use enough water to completely moisten the roots.
Apply a high potassium liquid fertilizer, such as tomato feed, once or twice a week on light or infertile soils. This promotes flowering, particularly in annual sweet peas (Lathyrus odoratus).
Pick or remove dead flower heads as frequently as you can once flowering starts. For annual sweet peas (Lathyrus odoratus), which will stop flowering if seedpods are allowed to form, this is especially crucial.
Pinching out
When plants are around 7.5 to 10 cm tall, pinch out the shoot tips of new spring-sown sweet peas for gardening (3-4in). This promotes robust side branching. Autumn-planted seedlings frequently naturally branch.
Cordons
Pick the strongest shoot and keep pinching out all the tendrils and other sideshoots as they grow whether you want to enter your sweet peas in a local show or just want to maximize the size of blossoms for cutting. By using this technique, the plant directs its attention to the blossoms. The term “cordons” is used to describe these single-stemmed plants.
One stem per bamboo cane or tall stake needs to be tied to them on a regular basis. To keep the shoot in place as it grows, you can use twine looped in a figure-eight pattern around the cane and stem. Use sweet pea rings, which are wire loops that wrap around the stem and cane and are lightly squeezed until they hold, to make things simpler.
Cordons have the potential to grow much taller than the typical 2 m (6 1/2 ft) estimated height.
Cutting back
Cut perennial Lathyrus back to the ground in the fall, or better still, wait until February to do it so the dead stems can serve as wintertime cover for wildlife. When flowering is ended at the end of the summer, annual sweet peas can simply be pulled out and composted. This might happen a little bit sooner during hot, dry seasons.
Methods
Sweet peas can be immediately sown into the ground in April, or they can be planted in seed compost pots in the fall or spring. Although it takes more time, pot-sowing is typically more dependable than direct sowing. If you plant in the fall to enhance your chances of getting early blooms, keep seedlings in a coldframe or cold greenhouse over the winter to protect them from growing lanky. Keep the coldframe’s lid elevated unless a strong frost is anticipated. Sweet peas planted in the spring flower in 12–14 weeks.
Sweet pea seeds frequently have a tough outer covering that makes them more challenging to germinate. Place your seeds on a layer of damp vermiculite or kitchen tissue and store them in an airtight container in a warm area. As soon as the seeds swell or start to sprout, plant them. Some gardeners like to soak the seeds overnight instead, but if you don’t plant them right away thereafter, they might rot. With a sharp penknife, chip off a little portion of the hard seed coat to allow moisture to enter and promote germination on recalcitrant seeds that haven’t swelled.
- Individually sow seeds in seed compost-filled rootrainers or 9 cm (3 in) pots. As an alternative, sow five to seven seeds per 13 cm (5 in) pot, spacing them 2-3 cm (3/4-11/4 in) apart.
- Add 1 cm (1/2 in) of vermiculite or compost to the top of the seeds.
- Add water and maintain at around 15C. (59F)
- It is optional to cover the pots with clear polythene or glass to reduce the likelihood that they will dry out, but keep in mind to remove the covering after the seeds have germinated.
- Once they have grown to around 3.5 cm (11/2 in), carefully transplant single seedlings into 9cm (3 in) pots if you have seeded them several to a pot.
- Use your thumb and finger to pinch out (remove) the top of the shoot just above a healthy leaf when the seedlings are 7.5–10cm (3–4in) tall. This will promote side branches, which are always stronger than the core stem that has been removed.
- At least four weeks before planting, remove all weeds from the soil and add a soil enhancer, such as garden compost, manure, or composted bark.
- Only plant seeds as the soil begins to warm, typically around April.
- To create a wigwam, plant any temporary supports, like pea sticks or bamboo canes, in the ground.
- Take out a shallow drill of dirt 2.5 cm (1 in) deep for rows of sweet peas, and plant a seed every 5 to 7.5 cm in it (2-3in)
- Seedlings should eventually be spaced 20–30 cm (8–1 ft) apart to provide the plants enough room to flourish. The extra seedlings may seem like a waste to compost, but unless treated carefully, their roots are typically too damaged to recover.
- Push two seeds into the ground at the base of each cane to a depth of 2.5 cm (1 in) when sowing around a wigwam of canes.
Perennial peas
In the spring or the fall, divide bigger plants. If you want to divide Lathyrus vernus in the spring, wait until after flowering.
Unfortunately, very few of the issues with sweet peas and perennial peas are extremely problematic.
- Powdery mildew, which is brought on by drought or insufficient hydration, results in a grey leaf coating.