How To Start Vegetable Plants Indoors From Seeds - The 5 Secrets To Success! (2024)

Want to start your own vegetable plants indoors this year from seed but worried that the process might be too complicated and expensive? Well, here is some great news – it’s easier and less expensive than you could ever imagine!

It’s incredibly rewarding to start your own vegetable plants from seeds. Not only do you have more control over the health of your plants, it’s also a great way to try new varieties and save money all at the same time.

While you can purchase plants at your local nursery or garden center, it’s no secret that the price of plants – as well as everything else – just keeps increasing year after year. In addition, when purchasing vegetable transplants at stores, you are limited to only the varieties they choose to carry.

How To Start Vegetable Plants Indoors From Seeds - The 5 Secrets To Success! (1)

But when buying seeds and growing your own plants, the sky is the limit when it comes to choosing what you want to grow – which lets you fill your garden with all kinds of different varieties, textures, and flavors. And, you can usually buy an entire pack of seed packets for less than the price of a single store-bought plant!

The best part of all is that growing your own vegetable plants from seeds doesn’t require a lot of work, equipment or time. With just a few supplies and a few minutes here and there, you’ll have your plants ready to go when the perfect planting day arrives in the spring.

What You Need To Start Vegetable Plants Indoors With Seeds

Before we get into planting your seeds indoors, let’s first cover what you will to easily and successfully grow your own plants.

Beyond having your choice of seeds, you will need to have seed trays and planting cells. It’s best to select larger individual growing cells that are at least 2 inches wide and deep. If you can find a bit larger, even better. This will allow you to grow from seed and never have to transplant until planting day.

Avoid tiny seed starting trays that let you grow 48 or 72 plants at once. They are simply not big enough and will quickly need repotting. The good news is that many of the larger seed trays can be used for multiple years with ease. Affiliate Link: RooTrimmer 3.5 inch Square Nursery Pots 60pcs

If your trays do not come with clear lids, you can use plastic wrap to help keep moisture in when you first plant your seeds. Of course, you will need soil as well – and this is where not to skimp! Seed starting soil needs to be ultra light and full of nutrients. Affiliate Link: Sun Gro 8-Quart Black Gold Seedling Mix

Regular potting soil and garden soil are not the best choice as they are still too heavy. Many potting soils also contain fertilizers that are too harsh for seeds. There are excellent seed starting mixes available, or you can make your own at home with a few simple ingredients. See: How To Make Incredible Seed Starting Soil – With 5 Simple Ingredients!

Using Lights Inside – How To Start Vegetable Plants Indoors From Seeds

Last but not least, you will need some sort of artificial lighting to grow seedlings indoors. But that doesn’t need to be costly. Basic fluorescent or LED shop lights work wonders for getting seeds to germinate and grow, so there is no need to purchase expensive lights labeled as “grow lights.”

One other note on lighting. Although you will see a lot of photos of folks growing in window sills, they are not good for growing vegetable seedlings. Winter sunlight is too far away, and your seedlings will turn out tall, thin, leggy and weak.

Listen In Below To Our Podcast On How To Start Seeds Indoors With Ease!

How To Start Vegetable Plants From Seeds

Now let’s cover starting your seeds! Aim for starting seeds 8 to 10 weeks prior to your last spring frost date. This will give enough time to produce strong, solid growth before the plants will need to be outside permanently.

Fill your seed trays a few days in advance of planting to allow the soil to settle in. When you fill them, moisten them with a bit of water. Since the soil is light and airy, this will help it to settle down into the cells and have moisture as well. Top cells off with additional soil prior to planting if needed.

Planting Seeds – How To Start Vegetable Plants From Seeds

Now it’s time to plant your seeds. It’s always a good idea to plant 2 seeds in about half of your growing cells. This helps have extra seedlings on hand to transplant into cells whose seeds might not have germinated.

Always be sure to label your seedlings. It’s very easy to lose track of which seeds you planted in which cells if you don’t mark them. A simple plastic label works great, or you can use a permanent marker to write on the outside of the plastic cells.

How To Start Vegetable Plants Indoors From Seeds - The 5 Secrets To Success! (3)

Once seeds are planted, lightly mist the soil and cover your tray. If your trays did not come with a plastic lid, you can use a piece of plastic wrap lightly placed over the tray.This will help to keep moisture in to speed sprouting.

Set trays in a warm location. At this point, you will not need to have your seed trays under any light in order for them to germinate.

You should start to see condensation develop on the lid or plastic. This indicates that the cells have enough moisture for germination. Once a few of the seeds have germinated, it’s time to remove the cover and move the trays underneath your light source!

Maintaining Seedlings – How To Start Vegetable Plants Indoors From Seeds

Proper Light Setup

Once seeds germinate, keep your shop lights about 1 to 2 inches above the seedlings and turn them on. While that might seem too close, it will allow the plants to grow strong and fill out without becoming thin and spindly. Move the lights up as the plants grow to maintain the 1 to 2 inch gap.

Keep your lights turned on for 12 to 14 hours a day. Do not leave them on around the clock as it can force too much growth. It will also dry plants out too quickly. A light timer can be great to help ensure that the lights turn on and off at the right time.

Watering & Fertilizing Seedlings– How To Start Vegetable Plants Indoors From Seeds

Keep the soil moist but not soggy. It’s best to not let the soil dry out for long periods of time between watering. Using a spray bottle to mist the tiny sprouts and soil works wonder early on. As plants grow, you can then use a small bottle to water plants more easily.

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After a week or two, you can thin seedlings down to one per cell. This is the time to transplant any extras into cells that did not have a seedling come up.

Fertilizing young seedlings is also important to help get them off to a fast start. Once the plants reach about 3 to 4 weeks in age, it’s time to power them up with a little dose of energy. But what you give them matters!

At this point, compost tea or worm casting tea are excellent. They will not burn young plants and have the nutrients they need in just the right form. If you are using a commercial liquid fertilizer, use it at 1/4 strength to keep from overpowering young seedlings.

Fertilize your seedlings every 2 weeks with this method until they are ready for planting outdoors. But before that can happen – you will need to harden your young plants off first.

Hardening Off Transplants – When To Start Vegetable Plant SeedsIndoors

Seedlings need a bit of time to adjust to the elements of the outdoors (e.g., sunlight, temperature swings, wind, rain, etc). This process of adjusting is known as hardening off.It gets them ready to be able to handle the rigors of full time life outdoors.

How To Start Vegetable Plants Indoors From Seeds - The 5 Secrets To Success! (5)

About two to three weeks before you will be planting, start to take your plants outside if temperatures allow. Progress slowly, keeping them protected at first and avoiding windy spots. Bring them back indoors the first few nights.

Gradually, allow the plants to be out longer to get more direct sunlight and exposure to wind. Eventually, you can leave your plants outside around the clock as planting day approaches. Just be sure to bring them inside if there is a late-season frost, hard storms – or if cold temperatures are expected.

Now, the strong and healthy plants that you started, nurtured, and grew from tiny seeds indoors are ready to go in the ground!

Simple Garden Life

Simple Garden Life is a website dedicated to keeping gardening fun, simple and enjoyable! We publish two new articles each week along with a new garden podcast episode every two weeks. This article may contain affiliate links.

Based on the information provided, I can provide insights and information related to starting vegetable plants indoors from seeds. Here are the key concepts covered in the article:

  1. Benefits of starting vegetable plants from seeds:

    • More control over the health of the plants.
    • Ability to try new varieties.
    • Cost savings compared to purchasing plants from nurseries or garden centers.
    • Greater variety and choice in what to grow.
  2. Supplies needed to start vegetable plants indoors:

    • Seed trays with larger individual growing cells (at least 2 inches wide and deep).
    • Clear lids or plastic wrap to retain moisture.
    • Seed starting soil that is light and nutrient-rich.
    • Artificial lighting, such as basic fluorescent or LED shop lights.
  3. Steps to start vegetable plants from seeds:

    • Fill seed trays in advance and moisten the soil.
    • Plant 2 seeds in each growing cell.
    • Label the seedlings to keep track of the varieties.
    • Cover the trays with a lid or plastic wrap to retain moisture.
    • Place the trays in a warm location for germination.
    • Once seeds germinate, remove the cover and move the trays under the light source.
    • Maintain the lights about 1 to 2 inches above the seedlings.
    • Keep the lights on for 12 to 14 hours a day.
    • Water the seedlings regularly, keeping the soil moist but not soggy.
    • Thin seedlings down to one per cell after a week or two.
    • Fertilize the seedlings every 2 weeks with compost tea or worm casting tea.
    • Harden off the transplants gradually before planting them outdoors.

It's important to note that the information provided is based on the content of the article.

How To Start Vegetable Plants Indoors From Seeds - The 5 Secrets To Success! (2024)

FAQs

How do you start growing vegetables from seed indoors? ›

How to Start Seeds Indoors in 4 Easy Steps
  1. Fill a large bowl with seed-starting mix and mix in a little water to evenly moisten the soil. ...
  2. Place your seed tray inside the drip tray and fill each cell to just below the top with soil.
  3. Sow your seeds. ...
  4. Cover the tray and place it under your lights on the heat mat.
Feb 10, 2023

Should you start seeds in the dark? ›

Most of the seeds germinate best in dark environments. The presence of light tends to inhibit their growth. The light decomposes carbonic acid gas and expels oxygen which leads the seed to harden. These gases are key factors that promote germination.

What is the best seed starting mix? ›

Combine compost, topsoil, a bit of coarse sand, and something like vermiculite, perlite, or coco coir until you have a mix with a consistency that holds together when wet. For seed starting, you'll avoid using as much sand as you would when making soil for your garden.

Can you start seeds indoors without grow lights? ›

Seeds don't need light to germinate. However, once they have emerged from the soil, they need light right away. Using a heat mat may help speed up germination. Growing space takes up room in your house.

Should I soak seeds before planting? ›

Almost all seeds can be pre-soaked, but it is large seeds, seeds with thick coats and wrinkled seeds that will benefit most. Small seeds benefit less and are difficult to handle when wet. Examples of seeds that benefit from soaking include peas, beets, cucumber, corn, squash, pumpkin and beans.

Should you water seeds right after planting? ›

Moisture Matters – After planting, water seeds with a gentle mist or shower. Avoid using a strong splash or spray, which can dislodge seeds. It is vital to keep soil consistently moist. In a sunny spot, this may mean watering twice a day.

How often should I water seeds indoors? ›

The Short Answer. Most seedlings require water every day or every other day. First, check the soil moisture using your finger by checking the soil color near the drainage hole. If the soil feels or appears dry or brittle, irrigate thoroughly until water pours out of the bottom of the tray, then stop.

How long do you have to leave the lights on when starting seeds? ›

Note that seedlings need 14 to 16 hours of light per day. You can turn grow lights on and off manually each morning and evening, but an outlet timer is much more convenient and will ensure that your lights turn on and off at the same time each day.

Is it better to plant seeds in the morning or at night? ›

Sow seeds early in the morning so the water has enough time to permeate the soil and get warm throughout the day. You can do it in the evening but make sure the seed flats stay warm overnight. Keep sown seeds away from direct sunlight and keep at a temperature of 75F-90F degrees—double check for specific seeds.

What is the most difficult seed to germinate? ›

Some seeds like Allium 'Purple Sensation' and Eryngium giganteum need a long period of cold-moist stratification with alternating temperatures. These are the most difficult seeds to germinate.

What is the fastest seed to germinate? ›

Cucumbers, lettuce, radishes, spinach, turnips, basil, melons, beans, peas, and other seeds that germinate quickly are some of the greatest examples.

Can you plant seeds in Miracle Gro? ›

Help seeds germinate by sowing them in Miracle-Gro® Seed Starting Potting Mix. This is finer than a regular potting mix, so young roots have an easier time of poking through. It mostly contains lightweight peat moss—a texture that allows air to move through while retaining a uniform amount of moisture.

Can you use egg cartons to start seeds? ›

Seeds can grow in just about anything that holds soil and allows for proper drainage. Using cardboard egg cartons is a great option because they are biodegradable, and you likely have a carton already in your fridge.

What is the cheapest way to start seeds indoors? ›

It's very possible to create an affordable seed starting setup without fancy equipment! You can successfully sprout seeds in things like egg cartons and yogurt cups. Soil for seed starting can be collected from your garden and baked so that it's sterile, and you can use inexpensive shop lights as grow lights.

How to start seeds indoors for beginners? ›

How to Start Vegetable Seeds Indoors
  1. Moisten your potting mix.
  2. Fill your seed trays or containers with potting mix. ...
  3. Using a small dibber or pencil, poke holes in the soil of each cell or container. ...
  4. Label your trays.
  5. Bottom water your seed trays/containers. ...
  6. Set seed trays aside to germinate.
Apr 24, 2020

How do you plant vegetable seeds for beginners? ›

Pile the soil into a mound that is roughly 1½ feet in diameter and 6 inches high. Using your finger, poke three or four small holes, about 2 inches apart, in the top of the mound, planting one seed per hole. If you're not sure how deep to plant the seeds, check the back of your seed packet.

Can all vegetable seeds be started indoors? ›

Though some plants prefer to be direct sown (like squash and cucumbers), almost anything can be started indoors as transplants, if done right, including root crops like beets, radishes and turnips. The main exception are vegetables with long taproots like carrots and parsnips, which need to be direct sown.

How long does it take for vegetable seeds to sprout indoors? ›

Keep evenly moist, but do not overwater. With a temperature of 70 degrees Fahrenheit, it will take about two or three weeks for the seeds to germinate. Seeds will germinate quicker indoors when the growing medium is kept at 80-85 F. However, if it is only 55-60 F, the seeds may rot before they germinate.

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