How can I successfully grow a big asparagus plant in my garden?

To successfully grow a big asparagus plant in your garden, choose a sunny spot with well-draining soil. Plant asparagus crowns in a trench, spacing them apart. Keep the soil moist and weed-free, and fertilize regularly. Harvest asparagus spears when they are 6-8 inches tall by cutting them at the base. Allow some spears to grow into fern-like foliage to nourish the plant for the next season.