American Plum Tree Seed Starter Grow Kit

The American plum is a tough native that blooms fragrant white each spring and feeds pollinators and wildlife. How to grow American Plum from seed Start here: American Plum seeds need a cold, moist rest first. Mix them into the damp soil, cover with the humidity lid, and chill the planter in your refrigerator for several weeks before moving it somewhere warm and bright. Sow your seeds at the depth listed on the included instruction card and cover lightly. Then set the clear humidity lid on top to hold warmth and moisture. Keep the planter warm and in bright light, and mist the surface whenever it begins to dry. When your American Plum sprouts appear, remove the lid and move it to your brightest window or under a grow light. Once seedlings have their second set of true leaves, pot them up or move them outdoors after your last frost. American Plum at a glance Botanical name: Prunus americana Germination: 60-90 days at 33-40F (cold stratification) USDA zones: USDA Zones 3-8 (Outdoor); All Zones (Indoor) Mature size: 15-25 feet Sunlight: Full Sun (6-8 hours daily) Seeds included: 2-7+ Seeds Frequently asked questions What's included in the American Plum Seed Starter Grow Kit? Do American Plum seeds need cold stratification? Yes — American Plum seeds are raw and untreated, so they need a cold, moist rest to break dormancy. Mix them into the damp soil, cover with the lid, and chill the planter in the refrigerator for several weeks, then move it somewhere warm and bright. How long do American Plum seeds take to germinate? American Plum seeds typically sprout in 60-90 days at 33-40F when kept warm and evenly moist. Your guide lists the ideal conditions. Can I grow American Plum indoors, and is it hardy in my area? You start American Plum indoors in any climate using the kit. Once established it can be moved outdoors in USDA Zones 3-8 (Outdoor), or kept in a container in colder regions. What if my seeds don't sprout?