College of Agriculture and Environmental Sciences
Step-by-Step Guide to Starting a Garden from Seeds
Looking to start a garden from seeds? Follow these steps for the best results.
- Pre-moisten the soil before filling seed trays
- Let the soil reach room temperature before filling the trays.
- Fill seed trays with soil depending on the crop being grown.
- Lettuce can be put into smaller, transplant-size trays.
- Tomatoes need larger transplant-size trays.
- Egg cartons and disposable cups are good alternatives for seed trays.
- Poke holes in the soil to the depth needed for particular seeds and crops.
- Using the butt end of a nail can help keep the hole smaller.
- Place seed into the hole.
- Depending on the seed germination rate (the percentage of seeds likely to germinate), it may be necessary to plant a few seeds per hole.
- Put just enough soil over the seed to cover it.
- Having good seed-to-soil contact will allow for more uniform germination.
- Water the seeds, but not so much that the soil moves, and the seeds float away.
- Using warm water (80 degrees Fahrenheit) can help with germination.
- Keep soil moist, but not wet.
- Touching the soil to ensure that it’s not too wet is always a good idea.
- Once seeds germinate, cut back on watering to begin proper root development.
- Provide lighting to ensure that the seeds get the energy needed to grow.
- Typically, seeds need 8-10 hours of light a day.
- A desk lamp or ceiling light are good options if you don’t have enough sunlight from a window.
- After the transplant starts to get larger, a multipurpose fertilizer may be needed for better growth and vigor.
- Before planting outside, plants need to be “hardened off.”
- Hardening off means allowing the plants to get acclimated to outdoor conditions to make it stronger before it is permanently planted outside.
- Suitable options for hardening off are a carport, porch or under a tree.
- Days 1-3: put in direct sunlight for two hours
- Days 4-7: put in direct sunlight for five hours
- Days 8-10: put in direct sunlight all day.
- Be sure to check your transplants regularly during this period as the sun will soak up the water in the soil more quickly than indoor light.
- After the hardening off period, your plants can be planted in their final location.
- Enjoy the fruit of your labor based on the days to maturity located on your seed packet.
- Days to maturity is not measured from the time planted as a seed but from the time planted in the soil as a larger transplant.
Pro Farmer Tip: Use a heat mat at a low temperature to assist in keeping your soil warm during the germination process. Moderately priced heat mats can be purchased online, but a dog kennel heat pad could work if you have one.
For more information
Contact John Kimes, ANR horticulture farm manager, at jekimes@ncat.edu.