Starting seeds directly in urban planter boxes is an efficient way to grow fresh produce in limited spaces. Begin by selecting deep planter boxes with proper drainage holes to prevent waterlogging. Use a high-quality potting mix specifically formulated for containers, as garden soil becomes too compact.
Choose seeds suitable for container growing - compact varieties of herbs, leafy greens, and dwarf vegetables work best. Create shallow furrows according to seed packet depth instructions, typically 2-3 times the seed's diameter. Space seeds appropriately to avoid overcrowding, then gently cover with soil.
Water thoroughly but gently using a fine mist spray to prevent displacing seeds. Maintain consistent moisture without saturating the soil. Position your planter boxes in locations receiving at least 6 hours of sunlight daily. Consider using row covers for temperature-sensitive seeds during cooler periods.
Thin seedlings once they develop their first true leaves, keeping the strongest plants. Regular feeding with balanced organic fertilizer ensures healthy growth. With proper preparation and care, direct seeding in urban planter boxes can yield abundant harvests throughout the growing season.