When Earth and Mars are at their theoretically closest point of 54.6 million km, it would take a signal from Earth about 3 minutes to make the journey, and then another 3 minutes for the signals to get back to Earth.
Switchgrass is a hardy, deep-rooted, perennial rhizomatous grass that begins growth in late spring. It can grow up to 2.7 m high, but is typically shorter than big bluestem grass or indiangrass. The leaves are 30â90 cm long, with a prominent midrib.
Panicum virgatum 'Heavy Metal' - Heavy Metal Switch Grass. Some of the taller Switch grasses can become floppy, but 'Heavy Metal' is shorter and the foliage is very upright. It is well-suited to the border. For a knockout combination plant several of these with Inula racemosa 'Sonnenspeer'.