(Asparagus oficinalis) Asparagus is a perennial native to Europe. With care, an asparagus bed will produce for 20 years without replanting. It can grow across a wide climate range but does especially well in the north. Asparagus can be grown from crowns (bare roots) and harvested in just 1-2 years, but starting from seeds is much more economical. You can harvest asparagus three years after sowing seeds. Start seeds in a warm, sunny location 2 to 3 months before the last frost of the spring. Ideal germination temperature is 70-80 F and seeds germinate more readily in bright light. Sow seeds ½ inch deep in loose, well-drained seed starting mix. Transplant seedings 6 inches apart in a sunny bed of well-draining, loose soil once the threat of frost has passed. Be sure to keep weeds under control and keep the bed well watered. Transplant seedlings to their final bed in the early fall or following spring. The final bed should be well worked, amended with plenty of good compost and located in full sun. Plants should be set 2-3 feet apart; 6 inch to 8 inch depth is often recommended for mature asparagus plants. Mulch around plants and allow to grow undisturbed for two years in order to let plants become established. Keep well watered but not soaked.