Do you have any advice for planting sweet peas indoors from seed?
In regions with warm winters, you can start seedlings inside in late January. (For the following year, prepare to immediately plant the seeds in the garden in the fall; they will develop throughout the winter into roots and bloom early in the spring.) Sweet peas should be planted inside about six weeks before the anticipated last frost date in areas with cold winters. Les Brake, an Alaskan gardener, offers tips on growing sweet peas. As soon as the soil can be worked in any location, transplants can be placed outside. Light frost won’t harm sweet peas. The majority prefer cool weather, while certain species, such the heirloom Lathyrus matucana, can tolerate mild heat. Since sweet peas often bloom in the spring, you should plant them as soon as you can. Lathyrus belinensis is a plant that blooms later and has interesting coloration.
Sweet peas should be sown in containers indoors:
Use a sharp knife to make a small cut in the tough outer shell of the seed coat. The seed will sprout more quickly as a result.
Fresh seed-starting mix should be poured into four-inch plastic pots or pots made of biodegradable materials (such as newspaper or Cowpots) and properly dampened. With your finger, a dibber, a pencil, or something similar, make a 1-inch-deep hole, then place one to three seeds within. Add extra mixture on top.
If more than one seed sprouts, cut off any more seedlings at the soil line so that each container only contains one plant. The seedlings should be grown in a sunny area, such as next to a window that faces south or on a light stand. The tops of the seedlings should remain 6 inches away from the bulbs if artificial lighting is being used.
Pinch or prune seedlings when they have four sets of leaves, right above the third set. The plant will become bushier and more branched as a result of this.
Before transferring seedlings outside, harden them off by gradually exposing them to sunlight and open air over the course of a week or so, leaving them out for a little bit longer each day. Put them on a soil that drains well and is rich. When moving plants, take care not to harm their roots. Squeeze the pot’s walls to help the root ball slip out. Handle the plants by their leaves and hold the entire root ball in your palm. You can simply plant the entire container in the ground if you used peat pots or anything similar.
Seedlings should be planted 6 inches apart and at the same depth as they were in their pots. Use a watering can with a rosehead to water softly. Sweet peas are annual climbing flowers. Give your sweet peas something to grow on, like a lattice, a twine frame, or netting with holes that are at least 2 inches square.
Can sweet peas be started indoors?
Sweet peas are a cool-weather annual that thrives in the infamously cool springtime of the Pacific Northwest and starts to wither as the heat wave approaches.
Although instructions on seed packets and other literature advise planting seeds directly in the ground, Pat Sherman of Fragrant Garden Nursery in Roseburg has discovered that beginning seeds indoors and transplanting leads to greater results. Her germination rate was 90%, and there was no loss after transplantation.
Here are her tips for cultivating sweet peas effectively in western Oregon.
In January or February, you can plant seeds straight in the ground, although success is not assured. For sweet peas to germinate, the temperature must be at least 50 degrees. You can wait till the end of March or the beginning of April, or you can use Sherman’s method, which is popular in England.
Sweet peas can be started indoors right away by planting one seed in each plastic container that is 2 inches or larger and has peat, sterilized potting soil, or both. Place the pots in a cool room of the house, a garden shed, or an unheated greenhouse, either on top of a refrigerator or on a heated propagation mat.
Remove the pots from the heat source as soon as the seeds have sprouted (usually within two weeks). Put them near a window that gets plenty of light or in another well-lit area.
Pinch off the growing tip to encourage side branching when the plants have four genuine leaves (approximately four weeks for early sowings and two weeks for later sowings). By putting the seedlings outside for a few hours each day, you can harden them off. In a further week or two, they ought to be prepared for transplant.
IN THE GREAT OUTDOORS: Transplants, or seeds, should be planted in carefully prepared soil that has manure or compost incorporated. (The taproots of sweet peas extend 12 to 16 inches.)
Separate the plants by 6 inches. Plant them in rows to climb a fence or trellis, or in circles to surround a bamboo-staked tepee. Large-holed chicken wire can be strung between stakes or nailed to a fence. Many people grow sweet peas over arbors or utilize string that has been strung up a fence or deck. You shouldn’t need fertilizer if you applied manure, dinnertime. Wait until sweet peas are in bloom and use a light touch when applying a general-purpose garden fertilizer if you haven’t already or if the plants seem undernourished.
You might need to add lime because sweet peas thrive on slightly alkaline soil. THE BIG, THE BAD, AND THE UGLIE: Although sweet peas are typically amiable, they do have some adversaries. Slugs are perhaps the worst since they can’t wait to munch on the tender fresh plants. Slugs can be managed with traps, bait, or nighttime hand-picking.
Viral infections can affect sweet peas, especially the traditional varieties, and are carried by aphids. Spray a blast of water from the hose on the aphids, then repeat as often as necessary. or use ladybugs or lacewings to control.
There is no cure if plants exhibit viral symptoms, such as yellowing foliage and a general loss of vigor. Leave them if they’re still functioning satisfactorily. Pull them out if not. OTHER THINGS Sweet peas prefer a lot of sun in our environment. Similar to roses, plant them where they will receive at least a half-day of sun. They want chilly roots, so plant deeply and cover the soil with mulch.
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.
When should I indoor-sow my pea seeds?
- Peas can be grown from seed or seedlings.
- Pea seeds can be sown for three years.
- Peas can resist a light frost, so start seeds indoors 8 to 6 weeks before the last anticipated frost in the spring and transplant seedlings to the garden when they are 4 weeks old and a few weeks before that date.
- As soon as the soil can be worked, in the spring or late summer, direct sow peas in the garden.
- Peas need time to mature before it gets too hot outside. Poor planting results may result.
- In the spring, 8 to 6 weeks before to the final frost, plant seeds for a spring yield.
- Seeds should be sown from late summer through autumn for an autumn or winter yield.
- The ideal soil temperature for germination of seeds is 75F, and peas will germinate in 9 days at 60F (16C) or in 35 days at 40F (4C) (24C).
- 50 to 75 F is the ideal soil temperature for producing peas (10-24C).
- If you wish to start plants indoors, sow seeds in peat pots two to three weeks prior to planting outdoors.
- Plant seeds between 1/2 and 1 inch (2.5 cm) deep.
- Plant peas 2 to 3 inches (5-7.5 cm) apart in the garden. Successful plants can then be thinned to 4 inches (10 cm) apart.
- For bush variations, place wire or sturdy supports in between the posts. For different types of poles, erect strong poles, a wire fence, or a trellis supported by posts.
- Set up poles, vine nets, wire fences, or trellises for plants to climb when planting peas.
- Until late spring, sow seeds every three weeks for a continuous crop.
- Just moisten the soil. Development of the pods will be halted by letting the soil dry up.
- Use fish emulsion or a soluble complete fertilizer at half intensity when fertilizing.