Starting your first urban planter box is exciting, but many beginners make simple errors that hinder their garden's success. The most common mistake is neglecting drainage. Without adequate holes and a layer of gravel or broken pottery at the bottom, waterlogged roots will quickly lead to plant death. Secondly, using poor-quality or incorrect soil is a major setback. Garden soil is too dense for containers; always opt for a high-quality potting mix designed for drainage and aeration.
Overwatering is the classic error of enthusiastic new gardeners. It's better to check soil moisture by feeling an inch below the surface rather than sticking to a rigid schedule. Underestimating sunlight needs is another frequent oversight. Placing a sun-loving tomato plant on a shaded balcony will only lead to disappointment. Finally, the temptation to overcrowd seedlings is strong. Give each plant the space recommended on its tag to prevent competition for light, water, and nutrients, ensuring a healthier and more productive mini-garden.