the photo shows a close-up of organic compost, or humus. dark, nutrient-rich soil with visible remnants of plant materials and an

compost humus organic soil earth fertilizer plants garden vegetable nature ecological natural fertile nutrientrich rich dark brown black texture details closeup macro remnants leaves branches worm earthworm decomposition composting vermicompost agriculture farming gardening horticulture ecogarden biogarden pit composter mulch biofertilizers