Certified GKH Gardening Expert
Harvest can begin when the asparagus plants have been in the ground for 3 years. Harvest the asparagus spears that appear in the spring when each spear is about 8 inches tall. As the weeks pass, the spears will get thinner and thinner. Stop harvesting when the spears are pencil-thin, to allow the plants to grow and store energy for the rest of the season.