Prepare your chosen garden space or containers by enriching the soil with compost and ensuring good drainage. Plant tomato, cilantro, and jalapeño seeds directly into the soil, following package instructions for spacing and depth.

For onions, plant onion sets about 4-6 inches apart in rows, ensuring the tip of the bulb is just below the soil surface. Plant the lime tree seedling in a sunny spot with well-draining soil, ensuring it has enough space to grow.

Water regularly, especially during dry periods, to keep the soil consistently moist but not waterlogged. Provide stakes or cages for tomatoes and jalapeños as they grow to support their heavy fruit production.

Fertilize all plants with a balanced organic fertilizer every 2-4 weeks, or as recommended for each specific plant. Monitor for pests and diseases, addressing any issues organically to ensure healthy growth.

Harvest cilantro leaves when they are young and tender for the best flavor, picking the outer leaves first to encourage more growth. Pick jalapeños when they are firm and green, or allow them to ripen to red for a spicier flavor.