Seed Needs, Mary Washington Asparagus (Asparagus officinalis) 85 Seeds Non-GMO Quality Asparagus seeds packaged by Seed Needs. Intended for the current and the following growing season. Packets are 3.25" wide by 4.50" tall and come with a full colored illustration on the front side, as well as detailed sowing instructions on the reverse. These vegetables can take up to 2 years to successfully grow, but the wait is well worth it, since this vegetable is one of the most rewarding. Mary Washington is an heirloom variety that produces green spears, with dark green tips. The plants grow to a mature height of roughly 3 to 7 feet tall, and can take up a bit of gardening space, so growing them in a designated area is recommended. Once established, you will begin to harvest deliciously fresh Asparagus spears, year after year for about 15 years or more. As explained above, Mary Washington will produce year after year and is categorized as a perennial vegetable. The plants will establish a deep root system in their initial year of growth, later wilting on the surface with the harsh temperatures of the Winter season. The plants will then regrow, displaying green foliage the following Spring and will produce light yields of crop within the second season. All Asparagus seeds sold by Seed Needs are Non-GMO based seed products and are intended for the current & the following growing season. All seeds are produced from open pollinated plants, stored in a temperature controlled facility and constantly moved out due to popularity.