One of the first vegetable crops of springtime, asparagus is a popular choice for many home gardeners. This perennial vegetable produces tender spears for years. Because of this, give careful consideration to where you plant it in the garden. Asparagus performs best when planted in full sun and in well-drained, sandy soil. To improve clay soil, mix some compost into it. Asparagus crowns are planted in the spring, and the asparagus bed should be prepared in the fall. Plant the asparagus plants in a trench, spread out the roots and cover with soil. Wait until the second year before lightly harvesting any asparagus spears. This allows the plants to develop good root systems.