When to Plant: Sweet peas can withstand light frosts, therefore in cold winter regions, sow in seed starting pots in early spring approximately 6-7 weeks before the final day of frost. Then, plant out as soon as the soil can be handled.
Sweet pea seeds can be directly placed into the garden in the fall from September to November in mild winter settings where the ground does not freeze. This will allow the seeds to develop healthy root systems and bloom in the spring.
If you give your seeds a head start by sowing indoors in seed containers from late January through March and transplant into the garden as soon as the soil can be worked, you can still receive a decent harvest of sweet peas, even though they will bloom a bit later. Sweet peas can handle light frosts.
1. Before planting, you could decide to nick your sweet pea seeds. The seed’s outer layer can be broken off by giving it a quick cut with a nail clipper so it can quickly absorb water. This will result in a higher percentage of your seeds germinating and a few days earlier sprouting.
This is how: Between your thumb and forefinger, hold a seed. Clip your seed by holding the clippers at an angle with the other hand so that you can only utilize the tip of the blade. Not taking a chunk out of the seed is your goal; it is to slice through the brown top layer of the seed. Sometimes the nick you caused is barely visible, and other times a bit of the seed coat cracks off revealing the interior seed’s lighter color. Both are true.
2. Avoid using garden soil when planting sweet peas in containers. Use high-quality potting mix instead. Using garden soil can lead to issues like compaction and poor drainage, whereas potting mix recipes are designed to perform under the circumstances found in a small container. In garden centers, a variety of soil mix brands are easily accessible.
Before filling your container, always pre-moisten your potting mix. As you slowly pour water into a bucket or wheelbarrow and stir the dirt, the earth will become evenly moist. When it feels like a wrung-out sponge, you are finished.
A 3 to 4 inch container works well for starting sweet peas. To prevent spreading disease to your new soil mix, properly clean the pot before using it again. After adding the pre-moistened mixture to the pot, give it a quick tap on the work surface to settle the soil. When a pot is filled correctly, the soil surface will be about 1 inch below the container’s top.
3. The time has come to plant your seeds. It matters how deeply you plant them. Always adhere to the planting depth recommendations on your packet’s back. Make a hole that is 1 deep for sweet peas. For this, a pencil or your finger works great.
4. Insert the seed into the opening you created. In order to ensure that every pot eventually gets a plant, even if one seed does not germinate or dies, we advise sowing two seeds each pot.
If you decide to plant 2 seeds per pot, you will need to thin them after the first set of leaves appear to 1 seedling per pot. At the soil line, trim or pinch out any surplus seedlings. Pulling it out could damage the surviving seedling’s roots, so avoid doing so.
5. Cover your seed with soil mixture after sowing. To remember what you planted when and how much of it, we advise labeling your containers with the variety and the date.
6. Lightly mist the seeds you covered. Use a watering can or hose with an attachment that diffuses the water so that it sprinkles like a soft rain. This will stop the water from washing the dirt away or compacting the soil too much.
Create the ideal circumstances for germination as you wait for your seedlings to appear. The two most critical variables are water and temperature. Your soil should always be damp, but not drenched. The ideal soil temperature is between 55 and 70 °F. You can start your seeds outside if the weather permits. A greenhouse or your home must be used to start them otherwise. Provide protection from birds, snails, and slugs if beginning them outside.
You must give your seeds a decent source of light once they have sprouted. If you want to keep them inside, you can put them beside a window as long as the sun won’t make them too hot during the day. Sweet peas do not have an issue with cooler nighttime temperatures near a window. Another option is fluorescent lighting. However, for the intensity to be bright enough, plants should be placed between 6 and 12 inches from the lights.
7. If you started your seeds indoors, the seedlings must be hardened off before being transplanted into your garden. Hardening off is the process of gradually exposing your plants to the elements they will experience outside, with temperature and direct sunlight being the most important factors. If you don’t, your seedlings can have transplant shock once they are planted in the garden.
When your plants have around 3–4 pairs of leaves, you can begin the hardening off procedure. Place your plants outside where they will receive morning sun in full force and afternoon shade. If you don’t have access to such a place, you will need to relocate your plants every day so that they are in the morning sun and out of the afternoon sun. Move them to a location where they will receive direct sun all day after about 3–4 days. You can move them into your garden in a few more days.
8. You can pinch or chop off the top of your seedlings when they have 3–4 pairs of leaves, leaving 2-3 pairs of leaves. Your cut should be made just above two leaves. By encouraging lateral branching, pinching helps you grow plants that are fuller.
9. Since sweet peas require healthy, well-drained soil, add some aged manure or other finished compost into your garden bed before planting. Work the material into the soil and rake the bed to level it out.
To move your seedling, make a hole that is both deep and wide enough to accommodate the root ball.
10. Try to minimize root disturbance while transferring your sweet pea seedlings from their container. Try it. Put one hand over the top of the pot, the seedling in your fingers, and flip the pot over to grab the root ball. Using the other hand, gently touch the bottom of the container while squeezing the edges to release the soil and plant.
11. Insert your seedling into the resulting hole, then cover it with soil. It is crucial when transplanting sweet peas that the soil level remain the same as it was in the pot. The plants may become sickly, stunted, or even die if you bury too much of the stem.
12. Leave 5 to 6 feet between each transplant. Your mature sweet peas’ health depends on the proper spacing between plants. Additionally, it provides the roots of individual plants with enough room to forage for water and nutrients while also enhancing air circulation to help avoid disease.
13. Gently water in your seedlings as soon as you are done transplanting. In addition to giving the plant water, this settles the garden soil around the root ball to prevent huge air pockets from drying out the roots. Use a watering can or hose with a diffuser attachment to water your plants, which will make the water fall gently like rain instead of washing the dirt away or beating your tender seedlings.
Tall sweet peas require a sturdy support in order to ascend. Build one now so that it is there when your seedlings are prepared to begin climbing.
14. You must keep birds, snails, and slugs away from your sweet pea seedlings. In order to prevent these typical predators from discovering your sprouts and eating them before you even realize they are up, you should do this as soon as possible after sowing your seed.
Use netting for birds. We create our own support hoops out of polytube, which is a flexible, black plastic irrigation tube that is sold at most reputable garden centers. It should be cut into lengths that correspond to the width of your garden beds. To create arches over your sweet pea bed, bury the ends of the cut tubing in the ground. These arches should be covered with bird netting, which should be secured at all edges to prevent openings. Before your sweet peas grow large enough to attach themselves to the netting, remove it. We choose the product Sluggo for snails and slugs because it is safe for use on people, pets, and wildlife.
15. You might want to assist stray branches in locating their vertical support structure as your plants grow higher and begin to climb. Encourage them to cling to you gently. Branches of sweet peas quickly break.
16. We advise deadheading to prolong the blooming period of your sweet pea plants. This entails removing wasted flowers before they have an opportunity to use their energy to produce seeds rather than other blossoms. Deadheading is best done right when the bloom has peaked and is just starting to fade. Cut the entire flower stem off at all times.
17. The blossoming of this plant is fully complete. When you can see, the plants begin to slow down and eventually stop flowering altogether as the discarded blooms turn into seedpods. Whether you deadhead or not, all sweet pea plants eventually reach the end of their flowering season. However, you can extend the bloom time by removing spent blossoms.
18. The flowers are, of all, the whole reason of producing sweet peas. Don’t forget to frequently clip them and bring them inside. They create lovely bouquets with the most amazing scents. Additionally, the plant will produce more blossoms the more you cut!
Can sweet pea plants be moved?
What is the most effective method for moving a sweet pea plant? The vine has been growing for around 28 years.
Sweet peas can be transplanted in the late summer or early spring. Gardeners in the north might want to transplant their plants in the early spring so they have time to re-establish before winter. Southern gardeners might prefer to transplant in the fall to give their plants time to settle in before the summer heat. Cut the plant back to approximately a foot when it’s time to transplant, then divide it into many pieces after digging. Plant the divisions at a spot that has been suitably prepared. To keep the roots cool, wet, and insulated in the summer and during the winter, give the soil enough of water and mulch. When the ground freezes, northern gardeners may choose to cover late-fall transplants with straw or evergreen boughs. The newly transplanted sweet pea will benefit from the additional insulation over the winter.
How far down must sweet pea roots go?
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!