Improved Yields from an Old Fashioned Favorite. Produces heavier yields with tighter tips than the original. Emerald spears have the same superior flavor, reliability and extra-long cutting period. Asparaguses are perennial vegetables, so you just plant them once and enjoy season after season of succulent spears. Long after harvest, the graceful, feathery green foliage is still attractive. Sun: Full Sun, Part Sun Spread: 2 feet Height: 3-7 feet Improved Yields from an Old Fashioned Heirloom Favorite Plant 18″ apart Loves the sun/part-sun and good drainage