Step 1
Fill a seed starter tray with sterile potting soil in the early fall. Press one to two raspberry seeds ¼ inch down into the soil of each cell. Pat the soil down gently over the seeds to remove air pockets.
Step 2
Mist the soil lightly to dampen, using a spray bottle filled with water. Keep the soil moist throughout the germination process. Place the seed starter tray in a cool, dark area while the raspberry seeds germinate. The seeds will begin to sprout within three months.
Step 3
Set the seed starter tray in an area that receives bright, indirect sunlight once the seeds begin to sprout. If this is not possible, set up a grow light and place the seed starter tray underneath.
Step 4
Continue to keep the soil moist and provide the raspberry plants with adequate light as they continue to grow. Transplant the raspberry plants outdoors in the spring, as soon as the soil is workable.