Soak seeds for 24 hours prior to planting to soften the outer seed coat. This will improve chances of successful germination. Our spruce seeds are pre-cold stratified and do not need to be refrigerated prior to sowing.
In a separate bowl, dissolve growing medium pellet in 3⁄4 cup of water, fluff with fork, and place into pot. Sow spruce seeds 1⁄4” deep and lightly cover with growing medium. If starting seeds indoors, place in a warm, bright location with ample air circulation. If starting seeds outdoors, place in a bright, sheltered location. Keep growing medium moist but not overwatered. Spruce seeds will germinate in 2-6 weeks.
Grow with the flow! Air circulation is just as important as sunshine, water, and growing medium! Proper airflow helps plants develop strong stem and root systems all while keeping pests and fungal issues at bay.
For best results, we recommend growing your spruce tree outside, as they grow best when exposed to the 4 natural seasons. Once seedlings develop their second set of needles, begin watering with plant fertilizer mixed at half-strength. Gradually move seedlings into brighter light until they are in full sun (minimum 6 hours per day). Once seedlings are established and have several sets of needles, decrease watering frequency, and allow top layer of growing medium to dry out between waterings. During spring through fall, water once a month with water soluble plant fertilizer mixed according to package instructions; stop feeding and continue watering during winter months while plant is in dormancy. Spruce are cold-hardy and can be left outside in USDA Zones 2-7; however, we recommend bringing your first-year seedlings inside an unheated garage or structure if the temperature will be below freezing for an extended period.
