Starting seeds indoors is a great way to get a jump on the season. Also, you can try unusual varieties of flowers and vegetables that you may not be able to find as plants. Here are a few tips to help you succeed with starting your seeds indoors.
You can use almost anything to start seeds in as long as it has good drainage. If you are reusing containers from last year be sure to sterilize them first with a mild bleach solution. Cardboard Egg Cartons, Jiffy Pots, Peat Pellets, and Plastic Trays specifically designed for seeds are the most common.
Soil-Less Potting Mix
Soil-less potting mixes are primarily composed of peat which is great for retaining moisture. They are also sterile (no diseases) and very light. They do not contain any fertilizer because seeds don’t need any until they produce true leaves.
Lighting
You may keep your seeds near a South facing window, but the seedlings will probably stretch because they just won’t get the light they need at this time of year. I use shop lights suspended from chains in my basement. I keep them a couple of inches above the seedlings and raise them as they grow. I keep them on a timer for 12-16 hours a day. You can purchase special grow lights but fluorescent bulbs work just fine.
Water
Keep the potting mix evenly moist. I use a combination of watering methods. I put water in a tray underneath the pots and the water is drawn upward. I also mist them from the top. This disturbs the seedlings less than using a watering can.
Most seeds should be started 8-10 weeks before the last predicted frost date (traditionally May 15). Check the back of the seed packet for information on when to start each specific variety.
Try to keep the pots in a warm space away from drafts.
If you have sown multiple seeds in a pot, thin them by cutting the extras at soil level. Do Not Pull Them Out. This will disturb and stress the root systems.
About 2 weeks before you plan to plant the seedlings outdoors you will need to “harden them off”. This is where you set them outside for a couple of hours to get them used to the sun/wind/temperature changes. Gradually increase the time you put them outside during the day until you are ready to plant. Don’t forget and leave them out overnight. I’ve done that and my seedlings were not happy!
Good Luck! And remember, plant what makes you smile!
Randy Brott
Mickman Brothers Garden Center Manager
14630 Hwy 65, Ham Lake, MN 55304
763.413.3000
