- Sweet peas can be seeded in the fall in warmer places (Zone 7 and above) where the winters are generally not too harsh. Other than that, plant seeds in late winter or early spring. Before planting, give the seeds a 24-hour soak in water. By doing so, the seed coat is softer and the sprouting process is accelerated.
- Fill your planting containers with high-quality potting soil while the seeds are soaking. Use the deepest pots you can find because sweet peas develop a lot of roots. Ideal containers are 4-inch (10-cm) pots and root trainers.
- In each container, plant two seeds by pressing a fingertip into the soil and a half-inch (1.25 cm) deep.
- To boost humidity and hasten germination, cover pots with a plastic dome covering. Place in a warm greenhouse or a house window with good light.
- Pinch out the center growth tip, just above a leaf joint, once plants are 4 to 6 inches (10 to 15 cm) tall, leaving just two or three leaf nodes. The plant will be encouraged to branch out strongly from the base as a result.
- Because they use a lot of food, sweet peas need a little more care to produce in large quantities. Apply bone meal, a thick layer of compost or well-rotted manure, and a generous amount of natural fertilizer to planting beds to prepare them. Incorporate these elements thoroughly into the soil.
- Vines require a sturdy foundation to climb and grow quickly. Affix Hortonova netting or 6-foot (1.8 m) tall metal fence to the tall poles spaced approximately 8 feet (2.4 m) apart down the row for them to climb.
- Around the time of the final spring frost, plant seedlings outdoors in two rows, one on either side of the trellis, spaced approximately 8 inches (20 cm) apart down the row. It’s crucial to keep the vines bound to their supports as they erupt into lush growth. Sweet peas can grow more than a foot (30.5 cm) per week once the vines begin going.
- Sweet peas adore water, and they can’t survive without regular watering. Set up soaker hoses as soon as you plant them to prevent their luxuriant development from being restrained. It’s important to maintain their thirst quenched during warm weather. Use diluted fish and seaweed emulsion to feed plants once a week.
- Pick flowers when there are at least two unopened blooms remaining on the stem for the greatest vase life. To extend the life of the vase, add flower food to the water. It’s crucial to prevent plants from going to seed in order to prolong blooming, so be sure to regularly harvest and deadhead the flowers.
When should sweet pea seedlings be planted outside?
Sweet peas should be planted in a well-drained but moisture-retentive soil in an open, sunny location. Sweet peas are ideal for container gardening. utilize a compost that is good, peat-free, and has a slow-release fertilizer added in.
How to sow sweet peas
From seeds, sweet peas are simple to grow in the spring or autumn. If you are planting in the fall, make sure you have space for them to grow until spring in a frost-free location.
Sweet pea seeds sprout fairly quickly. However, by nicking the seed coat with a knife and avoiding the “eye” region, you can encourage germination. Either plant seed in trays, root trainers, or 9cm pots (3 to a pot). Place the seed in a cold frame or greenhouse after sowing it in high-quality, peat-free compost.
View Monty Don’s instructional video on how to cultivate sweet peas from seed:
Planting out sweet peas
Once all risk of frost has passed, you can start planting your sweet peas in late May. Put them outside throughout the day and bring them inside at night to harden them off before planting. When young sweet pea plants are around 10 cm tall, pinch out the tips to promote bushy growth.
In the spring, you can purchase sweet pea plug plants. Under a support, such as a wigwam made of bamboo canes, plant them in rich soil. The average sweet pea will reach a height of 2 meters. Until they have a healthy growth, water them well. Don’t worry about separating individual plants; simply space sweet pea plugs or pots about 20 cm apart.
Watch Monty as he demonstrates how to put out store-bought plants while planting sweet peas. Find out the advantages of giving them a nice drink after planting as well as why it is best to plant them out just once the soil has warmed up:
How much water do sweet pea seedlings require?
Rarely do sweet peas require more than once a week of watering, but you must keep an even moisture level throughout the growing season. They dislike the heat, so water them frequently during the summer, but do it early in the day to prevent buds from dropping, plants from scorching, and to yield fewer flowers. To irrigate their roots, it is preferable to utilize drip or furrow irrigation rather than overhead sprinklers, which can cause fungal diseases in the vines.
Where should sweet pea seedlings be placed?
When the greatest risk of frost has passed in April and your sweet peas are healthy and growing, you may move them outside to acclimate to outdoor conditions for about a week before planting them in their final location.
Plant your sweet peas in a garden area that receives plenty of sunlight and is convenient for regular plucking. Dig a few buckets of compost into the planting area beforehand to improve the soil and retain moisture during dry periods since sweet peas need rich, moist soil. Alternately, grow sweet peas outside in huge patio tubs. However, as sweet peas are climbers, you’ll need to provide an appropriate support wherever you decide to plant them.
Before you begin planting, place your support frame. Turn each pot upside down, then carefully divide the plants. Fill each hole with 2 or 3 seedlings for a good, complete show. Plant each bunch at a distance of about 15 cm.
sowing sweet pea seeds
Sweet pea seeds have a tough shell. Before sowing, you might want to let them sit on some damp kitchen paper for 24 hours to help with germination.
Between October and April, bury sweet pea seed. The best options are loo rolls or rootrainers since they offer a long, slender root run. It doesn’t allow the roots as much opportunity to grow and branch out if you plant into a short, stumpy pot.
Use a peat-free, all-purpose potting compost to plant the seed; plant two seeds per container. With your finger, put each seed into the compost 2-3 cm below the surface after dampening it. Then, if necessary, label the pot.
Sweet peas can be germinated in a cold frame or unheated greenhouse if they are sown in the spring or fall. Germinate them on a windowsill, heated propagator, or very gently heated greenhouse if you are sowing in the middle of winter.
Keep sweet pea seeds away from mice or try soaking them in liquid seaweed fertilizer before planting to make them tasteless because mice love to eat sweet pea seeds and your entire crop can disappear in one shot.
Daily check for germination; don’t water until seedlings appear; this normally takes 10–14 days. Keep the seedlings cool at around 5C as they emerge (40F). What you want is for this to encourage root growth rather than stem growth. Usually, a cold frame or greenhouse without heating is adequate.
Pinch out the leaders when there are three or four leaf pairs. Simply pinch off the growing tip with your finger and thumb. With the plant’s energy focused on spreading out instead of developing upward, this encourages the growth of robust side shoots.
If the surface of your plants starts to seem dry, check them frequently and give them a little water. Look for white roots at the bottom of the pot around a month after germination.
If you sown your sweet peas in the spring, you can plant them outside right away in a moderate stretch from March to May. You must plant the seeds in pairs if you planted them in the fall or winter. They won’t be the same again if you let them become pot-bound in the rootrainers. It’s best to use a narrow, deep, one-liter saucepan. Water them in and use a decent compost. It’s time to plant the roots outside once the roots have filled that pot. Do this from March through May while it’s mild.
planting sweet pea seedlings
Dig a lot of organic material into the planting location once your seedlings are ready to be transplanted. Farmyard manure is beneficial for sweet peas since it feeds these hungry plants softly and helps keep water on a soil with adequate drainage.
Make sure your sweet peas are planted next to a vertical structure like a teepee, an arch, or a tunnel. For each rod of a vertical support, plant two plants. Spread them out 15 cm (6 in) apart.
Protect them from slugs all around. I utilize a minimum of a 30 cm (1 foot) wide by 5 cm (2 inch) deep piece of washed inland rough sand.
Tie the young sweet pea plants into the frame as they start to grow; do not let them flop around. They’ll produce plants that are stronger and grow more swiftly when consistently tied in. When they start to run off, repeat this more frequently after the first two times in the first month.
After the first month in the ground, feed your sweet pea plants every two weeks. This is especially crucial if the soil is not very fertile. It is best to use a tomato or comfrey feed.
Once the flowers start to bloom, gather as many as you can to fill your vases. Snip any seed pods you come across as you’re cutting them off as well. Your plants must not produce seeds because doing so would prevent them from blooming.
Due to the energy required to create the flower, sweet pea stems naturally get shorter as the season goes on. Feed, water, and deadhead your plants frequently to promote greater flowering.
growing sweet peas in a pot
In deep pots with a climbing frame, sweet peas can be grown. Make sure to select a dwarf or compact variety. A little teepee for a pot can be made or purchased. To build one, firmly press birch or hazel twigs approximately 120 cm (4 feet) tall into the compost around the pot’s perimeter, about 30 cm (1 foot) below. Using twine or a flexi-tie, gather the ends and bundle them at the top. Then, the sweet peas can climb the twiggy teepee.
Sweet peas can they grow in pots?
It’s simple to grow sweet peas in pots! You may have colorful and fragrant sweet peas all summer long with a few easy tips and tricks!
Sweet peas thrive in containers and pots. They only require excellent soil, sunlight, water, and a climbing structure. After that, relax and watch your sweet peas, which have a lovely aroma, develop and prosper.
Easy to grow!
I’m a huge fan of sweet pea flowers. There may not be a flower with a more exquisite aroma, and their petals are so lovely and fragile. Since sweet peas are fortunately fairly simple to grow, I make sure to have a lot of them in my garden during the summer. Actually, you can have blooms well into the fall if you’re fortunate and the weather is nice.
Grow Sweet Peas in Pots!
My yard used to receive a lot of sun when we first moved into our house over 15 years ago, making planting sweet peas relatively simple. I used to plant them in a row along the back fence, but as our trees have grown, the location is now shady and no longer ideal for growing sweet peas. I now cultivate them in containers. I plant sweet peas exclusively in approximately 5 pots since I adore them so much.
Great for limited space!
You do not need acres of land to appreciate a garden, as I have come to realize over the years. You can grow plants if you have a balcony, patio, or small urban yard. Don’t let a lack of room prevent you from growing most plants because they thrive well in pots. In my teeny, small urban yard this summer, I actually planted a cut flower garden, and I loved it SO SO much. I’m going to plant more flowers this year!
Tips for Growing Sweet Peas:
I’ve learned a few things about cultivating sweet peas over the years, so I thought I’d share some advice I’ve received.
Look for dwarf or short kinds that don’t grow much taller than 2 feet. They are also referred to as bush sweet peas.
Actually, this is a matter of taste. As soon as the snow melts in the early spring, many people will sow sweet pea seeds immediately into their gardens, which is a fantastic time because the soil is damp enough to soften the seeds. I will occasionally do this, but I frequently forget to get them out in time, so I will soak the seeds first. This involves giving the seeds a 24-hour soak in water before planting them in the ground. The seed coat will become softer as a result, hastening the sprouting process.
Any pot or container you use should be at least 6 inches deep. The deeper the container, the better because sweet peas like to spread their roots out.
To ensure proper drainage, check the pots and containers you use for your sweet peas. Sweet peas dislike to stay submerged in water.
Use high-quality potting soil since sweet peas prefer rich soil. Compost should also be added to it as an amendment.
obey the directions on the package. However, the fundamental guidelines call for planting them 2 inches apart and 1 centimeter deep. Most of the time, I will sow more seeds than is advised in case some of them don’t germinate. Just thin them out if I get too many.
Because sweet peas like to climb, you should always give them something to do so. Sticks can be inserted into pots when utilizing pots so that when the sweet peas grow, their tendrils can cling to the sticks. In my pots, I simply used twigs; you can see them in the image above. A modest trellis or chicken wire are other options.
As they get higher, your sweet peas will require a little help. You may need to assist the tendrils so they will latch onto the stakes or trellis. I’ll use tiny pieces of thread to delicately attach the stems to the support rods.
Sweet peas thrive best when their roots are firmly planted in cold, wet soil and their blossoms are exposed to the sun. Consider adding some mulch to the pot once the plants have sprouted to maintain the health of their roots.
Sweet peas don’t actually require a lot of fertilization. Contrary to popular belief, sweet peas do not enjoy nitrogen as much as peas do. My sweet pea plants don’t get much fertilizer from me.
Keep your sweet peas well-hydrated without drowning them. They dislike getting too dry or damp.
It’s always so difficult to do this, but as soon as your sweet peas begin to grow, you need to pinch them back to encourage side shoots, which will produce strong, bushy plants. Simply use your fingers to pinch off the stem’s top just above a group of leaves to do this. I know it’s difficult, but your sweet peas will benefit from it.
Eliminate old seedpods and blooms. Doing this frequently promotes new growth, so be sure to do it!
If you’re anything like me, you grow sweet peas in order to harvest the flowers and bring them inside. The scent of them in the summer I just can’t get enough of. The good news is that when you select more blooms, more will grow as a result.
I hope this encourages you to plant sweet peas as well! You can have an abundance of lovely blooms all year long with a little care!