Maximizing a single urban planter box requires smart pairing. Companion planting saves space, deters pests, and boosts growth. A classic "Three Sisters" variation pairs a tall crop like a single cherry tomato or pole bean (the trellised "pole") with low-growing spinach or lettuce (the "ground cover"). Basil planted with tomatoes enhances flavor and repels flies. For a fragrant, pest-resistant mix, try rosemary, thyme, and sage together. Marigolds are a powerhouse companion for almost any box, their roots deterring nematodes and flowers repelling aphids. Always group plants with similar needs for sun and water. Avoid pairing heavy feeders like corn with light feeders like herbs. With thoughtful combinations, one planter can yield a diverse, productive, and beautiful urban oasis.
What are some good companion plants to grow together in one urban planter box?
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