SEEDLING MIX SEEDLING MIX Composted bark, compost and vermiculite will give optimal resultsfor vegetable and annual seedlings.Fill seedling trays with seedling soil. Transplant young plants fromgermination mix into seedling soil.This same medium may be used when seedlings are to be planted in flower boxes.COMPOSITIONCompost, composted Bark and vermiculite.AVAILABLE SIZESBags: 15dm³Bulk: 1m³, 2m³ and 6m³ – 10m³ Back