Growing plants from seed is a great way to start gardening earlier in the season. With the right light and some simple equipment, it's easy to grow from seed to harvest.
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Because each plant has unique seed-starting requirements, it helps to start small by growing just a few varieties. If you're new to gardening, choose some of the easy-to-start seeds below, and then move on to fussier seeds, like those that require stratification.
Veggies and Herbs Flowers and FoliageChoose a seedstarting mix that's made for germinating seeds. Do not use soil from your garden or re-use potting soil from your houseplants. Start with a fresh, sterile mix that will ensure healthy, disease-free seedlings.
Before filling your containers, use a bucket or tub to moisten the planting mix. The goal is to get it moist but not sopping wet; crumbly, not gloppy. Fill the containers and pack the soil firmly to eliminate gaps.
Remember that most mixes contain few, if any, nutrients, so you'll need to feed the seedlings with liquid fertilizer a few weeks after they germinate, and continue until you transplant them into the garden.
Seedlings need A LOT of light. If you're growing in a window, choose a south-facing exposure. Rotate the pots regularly to keep plants from leaning into the light. If seedlings don't get enough light, they will be leggy and weak. If you're growing under lights, adjust them so they're just a few inches above the tops of the seedlings. Set the lights on a timer timer for 15 hours a day. Keep in mind that seedlings need darkness, too, so they can rest. As the seedlings grow taller, raise the lights.
LED grow lights are perfect for indoor seed starting, as well growing as light-loving houseplants.The goal of starting seeds indoors is to have your seedlings ready to go outdoors when the weather is favorable. Start by looking at the seed packet, which should tell you when to start seeds inside. Usually, it will say something like, "Plant inside six to eight weeks before last frost."
Some types of vegetables, such as beans, are best started outdoors. There is little benefit to growing them indoors because they aree cold hardy and germinate quickly. Some flowers, such as poppies, are best planted outdoors, too. They are more prone to transplant shock and do not like to be handled excessively after they've germinated. These seeds are usually marked "direct sow".
Check the seed packet to see how deep you should plant your seeds. Some seeds require light for germination and should be sprinkled on the soil surface. Other seeds may need to be buried under 1/8- 1 inch of soil. For insurance, you can plant two seeds per cell (or pot). If both seeds germinate, snip one and let the other grow (thin). It's helpful to make a couple divots in each pot to accommodate the seeds. After you've dropped a seed in each divot, you can go back and cover the seeds.
As the seedlings grow, use a mister or a small watering can to keep the soil moist but not soggy. Let the soil dry slightly between waterings. Containers with holes on the bottom can be set down in a tray and water can be added to the tray — "bottom watering" is an effective way to keep newly formed roots moist without getting upper leaves wet and risking rot.
Seeds contain all the energy and nutrients they need to germinate and get going. But after seedlings get their second set of leaves ("true leaves") they begin to rely on their environment for nutrients. Feed the seedlings regularly with an organic, liquid fertilizer, mixed at the rate recommended on the package.
There are a number of factors that affect seed germination. Check the seed packet to determine if all the requirements for temperature and light were met. If the soil was cold and excessively wet, the seeds may have rotted. Dig up one of the seeds and examine it. If it is swollen and soft, the seed has rotted and you will need to start over. If the soil was too dry, the seeds may not have germinated or may have dried up before their roots could take hold. If the seeds were old, they may no longer be viable. Try again and be sure to provide consistent moisture.
Purple leaves are an indication that the plant is not receiving enough phosphorus. If you have been using half-strength fertilizer for the first three to four weeks of the seedling's life, it may be time to increase the fertilizer to full strength. The phosphorus content (the middle number on the fertilizer analysis) should be at least 3.
When the stems of young seedlings become withered and topple over, they have probably been killed by a soil-borne fungus called "damping off." This fungus is difficult to eradicate once it is present in the soil, but you can avoid it by using a sterile, soilless growing medium, and by providing good air circulation.
Mold is an indication that the growing medium is too wet. It will not harm your plants as long as you take action. Withhold water for a few days and try to increase air circulation around the containers by using a small fan. You can also scrape off some of the mold or try transplanting the seedlings into fresh soil.
Plants grow tall and leggy when they do not receive enough light. Use grow lights to ensure that they receive 15 hours of bright light each day. Warm temperatures can also stimulate leggy growth. Try lowering the room temperature and reducing the amount of fertilizer you apply. For more on this topic, see the article How To Garden With Grow Lights.
With temperatures swinging down around 30 degrees Fahrenheit in Georgia each night, it may not feel like spring is around the corner, but now is the perfect time to start preparing your vegetable garden.
Starting seeds indoors can give you a jump on the growing season, helping you stay ahead of the stifling summer heat and the inevitable wave of insect pests. While the cold lingers, plenty of garden prep can be done indoors, including ordering seeds, mapping out your garden and purchasing supplies online or from your local gardening store. With mild afternoons upon us, you’ll be ready to tackle outdoor preparations.
To help you get the best results when starting seeds, we turned to three top experts from University of Georgia Cooperative Extension to set you up for success:
Don't need all the details? Check out the quick guide to starting seeds indoors at the end of this article. Want more? Refer to the UGA Extension publication “Starting Plants from Seed for the Home Gardener.”
Select disease-resistant varieties. Choose high-quality seeds from a reliable dealer to ensure they are true to variety and free from contaminants. Look for varieties labeled as resistant to common pests and diseases, such as nematodes, powdery mildew or fusarium wilt, to minimize the need for chemical treatments. Select cultivars suited to your region that can withstand heat and thrive in local growing conditions. Store any leftover seeds in a cool, dry place to maintain their viability for future planting.
Choose the right planting time. Understanding a plant’s days to maturity is also essential, particularly for beginners or gardeners dealing with unpredictable weather. If starting seeds indoors for transplants, timing is key. Seedlings should be ready for the garden when soil temperatures are suitable, and the risk of frost has passed. Starting seeds too early may result in transplants outgrowing their containers before they can be safely moved outdoors.
In general, sow seeds six to eight weeks before transplanting. For instance, if your average last frost date is April 15, begin tomato seeds indoors in late February or early March. Properly timed warm-season crops (such as tomatoes and squash) will be garden-ready by spring, while cool-season vegetables (like broccoli and cabbage) should be planted early enough in the fall to establish and produce before the first frost. Following UGA Extension's “Vegetable Planting Chart” can help ensure better yields.
Think about space and growth habits. Once your seedlings are ready to be transplanted outdoors, you'll want to be sure you have the right space for them. Compact or bush varieties work well for small gardens or containers while vining crops like cucumbers and pole beans need trellises or extra space.
Match plants to your soil and light conditions. Most vegetables thrive with six to eight hours of full sun and well-draining soil. A soil test through your county Extension office can identify any necessary amendments to improve plant health before transplanting your seedlings outdoors.
Grow what you like to eat. It’s easy to get excited about new varieties, but focusing on vegetables you and your family enjoy will ensure your harvest gets used.
For more in-depth guidance, refer to UGA Extension’s “Home Garden” series, which covers topics like soil preparation, garden location, irrigation, pest management and fertilization.
Seeds can be started in containers for later transplanting or sown directly in the garden. In general, plant seeds at a depth about twice their size. Very small seeds should be lightly pressed into the soil and barely covered.
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Transplanting has benefits including climate control, a longer growing season and better management of seedlings. It helps plants develop strong roots that absorb nutrients and moisture efficiently, while also protecting them from larger pests like crickets and pill bugs. Starting plants indoors or in containers lets you time their outdoor planting for optimal growth. This method improves survival rates, maximizes space and allows you to discard weak seedlings. Be sure to keep seed-starting media moist but avoid overwatering to prevent rot or disease.
Best for transplanting:
Some plants grow best when seeded directly into the garden or container. Direct seeding is particularly well-suited to plants with large seeds (like beans, corn and pumpkins) and root crops (like carrots and beets). Sow seeds directly into the container or ground where they will grow. Prepare a smooth seed bed and follow depth guidelines on seed packets.
Best for direct seeding:
By choosing the right method for each plant, you’ll give your seedlings the best chance to thrive.
Use a starting mix. For best results, use a sterile, soilless seed-starting mix rather than garden soil. Garden soil can be too heavy, hold too much water and may contain weed seeds or diseases that can harm young seedlings. A good seed-starting mix is light, fine-textured and uniform to ensure good seed-to-soil contact.
Many commercial seed-starting mixes contain peat moss, perlite and vermiculite, which provide the right balance of moisture retention and drainage. For experienced gardeners, garden centers offer materials to create custom potting soil. Try mixing shredded sphagnum peat moss with fine vermiculite, then add a small amount of superphosphate and ground limestone to balance nutrients. Before planting, wet the mix completely and let it sit for a few days to create the best conditions for seedling growth.
Use clean, well-draining containers. Any container can be used for starting seeds as long as it drains well, is deep enough for root growth and is sanitized before use. Plastic trays, fiber pots and peat pellets are popular choices, but you can also repurpose items like salad boxes or muffin containers — just be sure to add drainage holes. Clear plastic containers with lids act as miniature greenhouses, creating a humid environment ideal for germination.
For easy transplanting, consider peat pellets or individual cell trays, which minimize root disturbance. If reusing containers, sanitize them by washing away debris and soaking them in a 1:9 bleach-to-water solution, then rinsing thoroughly. Clean containers and sterile seed-starting mix help prevent fungal diseases that can harm young seedlings.
Water is essential for seeds to start growing. Without it, seeds stay dormant. But getting the right amount is key — too much water can cause seeds to rot, while too little can dry them out before they sprout. Keeping the soil consistently moist is important, but heavy watering can wash seeds away or compact the soil. A gentle mist from a spray bottle works best to provide even moisture. Covering seeds with a thin layer of vermiculite or peat moss helps them stay hydrated. To maintain humidity, cover seed trays with a clear plastic dome or loosely place them inside a plastic bag, but remove the covering once seedlings emerge.
Seeds need oxygen to “breathe” as they grow. As seeds begin to sprout, they take in oxygen and release carbon dioxide. If the soil is too heavy or waterlogged, it can block oxygen flow and stop germination. That’s why seed-starting mixes are light and well-draining — garden soil is often too dense for young seedlings.
Some seeds need light to germinate, while others require darkness. Many will sprout just fine either way. Seed packets or catalogs will usually specify what's needed. If a seed needs light, press it gently onto the soil surface without covering it. If it needs darkness, add a thin layer of peat moss or vermiculite on top.
Once seedlings emerge, they need plenty of bright light to grow strong and avoid becoming long and spindly. A sunny windowsill may not provide enough light, especially in winter. Using grow lights can help — position them just a few inches above the seedlings and keep them on for 12 to 16 hours per day. Adjustable LED or fluorescent grow lights work best, as they produce little heat and can be moved as plants grow.
The right temperature helps seeds germinate faster and more successfully. Some seeds have strict temperature needs, while others are more flexible. Most common garden seeds sprout best in soil between 65-75F. You can use a thermometer to check the temperature inside seed trays.
If needed, place trays on a heating mat or in a warm spot in your home, like near a radiator. Once the seeds sprout, move them to a bright area and gradually lower the temperature to 65F to help them grow strong.
Water is essential for seeds to start growing. Without it, seeds stay dormant. But getting the right amount is key — too much water can cause seeds to rot, while too little can dry them out before they sprout. Keeping the soil consistently moist is important, but heavy watering can wash seeds away or compact the soil. A gentle mist from a spray bottle works best to provide even moisture. Covering seeds with a thin layer of vermiculite or peat moss helps them stay hydrated. To maintain humidity, cover seed trays with a clear plastic dome or loosely place them inside a plastic bag, but remove the covering once seedlings emerge.
Seeds need oxygen to “breathe” as they grow. As seeds begin to sprout, they take in oxygen and release carbon dioxide. If the soil is too heavy or waterlogged, it can block oxygen flow and stop germination. That’s why seed-starting mixes are light and well-draining — garden soil is often too dense for young seedlings.
Some seeds need light to germinate, while others require darkness. Many will sprout just fine either way. Seed packets or catalogs will usually specify what's needed. If a seed needs light, press it gently onto the soil surface without covering it. If it needs darkness, add a thin layer of peat moss or vermiculite on top.
Once seedlings emerge, they need plenty of bright light to grow strong and avoid becoming long and spindly. A sunny windowsill may not provide enough light, especially in winter. Using grow lights can help — position them just a few inches above the seedlings and keep them on for 12 to 16 hours per day. Adjustable LED or fluorescent grow lights work best, as they produce little heat and can be moved as plants grow.
The right temperature helps seeds germinate faster and more successfully. Some seeds have strict temperature needs, while others are more flexible. Most common garden seeds sprout best in soil between 65-75F. You can use a thermometer to check the temperature inside seed trays.
If needed, place trays on a heating mat or in a warm spot in your home, like near a radiator. Once the seeds sprout, move them to a bright area and gradually lower the temperature to 65F to help them grow strong.
Make sure to thin seedlings before transplanting. When starting seeds, gardeners often plant more than needed to ensure that enough germinate. However, once seedlings emerge — especially tiny ones like carrots — they must be thinned to prevent overcrowding. Without enough space, plants compete for water, light, and nutrients, which can stunt growth or even cause death. Check seed packets for proper spacing and remove extra seedlings by snipping them at the base rather than pulling them out.
Once seedlings develop their first true leaves, they can be transplanted into larger containers or the garden. Carefully lift them by the roots using a pencil or dibble tool — never tug by the stem, as this can damage the plant. Place seedlings at the same depth they were growing before, water thoroughly and check moisture levels daily, especially if they’re under grow lights or on a heat mat.
For healthy growth, fertilize transplants lightly — starting at half the recommended strength — and repeat every two weeks. Avoid fertilizing wilted or moisture-stressed plants, as this can cause further damage.
Before moving seedlings outdoors, they need time to adjust to direct sunlight and changing temperatures. This process, called hardening off, helps strengthen plants for life in the garden. Start by placing them in a shady outdoor spot for a few hours each day, gradually increasing their time outside over one to two weeks. On cooler days, reducing temperature and water can also help prepare them for outdoor conditions. A slow transition prevents stress and ensures seedlings thrive once planted in the garden.
Plant the seedlings in the ground or in raised garden beds. Locate the garden in an area that will have at least six to eight hours of sunlight per day. Till the bed to a depth of 6 to 10 inches, incorporating 4 inches of good organic matter into the mix. Remove any sticks and stones. Smooth the soil with a rake and plant seedlings according to their spacing requirements listed on the seed packet.
Some plants, like tomatoes and peppers, benefit from deeper planting. Bury tomato stems up to the first set of leaves or lay them sideways with the leaves above soil level to encourage strong root growth. Water newly transplanted seedlings well for the first few weeks as they become established.
Give starting seeds a try this season. Starting seeds indoors gives you the flexibility to grow a variety of plants while saving money. With just soil, light, water, seeds and time, you can get a jumpstart on your spring garden. Pick a couple of vegetables you enjoy eating and consider your space, schedule and goals to decide if indoor seed starting is the right fit for you.
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