Mercury. is visible in the sky a little after sunset during the latter half of March. It will be low in the west almost directly above where the Sun just set. It will be approaching maximum elongation at month's end. March is a good month to view this elusive little planet.
Venus has been the evening star for several months, but will disappear from view as it moves into the Sun's glare during March. Conjunction occurs on March 25. During the first half of the month, Venus will appear as a narrow (and large) crescent when viewed thru a modest telescope.
Mars is continues to shine in the west after sunset. It's very slowly descending and growing slightly dimmer throughout the month.
Jupiter (in Virgo) rises around 9 pm at the beginning of March. By month's end, it will rise just after sunset.
Saturn (in Sagittarius) is visible in the early morning sky throughout March.
Outer Planets. Uranus and Neptune. Uranus (in Pisces) is near Mars in the west at dusk at the beginning of March. By month's end it will be lost in the Sun's glare. Neptune is lost in the Sun's glare throughout March.
Pluto rises in the east an hour or two before dawn during March. It's still fairly close to the Summer Milky Way, so it difficult to pick out among all of the stars. At magnitude 14.3 it's pretty difficult to observe anyway unless a large telescope is used.
The Winter Milky Way still dominates the night sky, but as the month progresses, we begin to move into what is known as 'galaxy season'. Earth's position during the Spring makes it possible to gaze through only a thin portion of the Milky Way Galaxy. That makes it much easier to see distant galaxies. The region between Leo, Virgo and Coma Berenices is an excellent place to look for scores of fairly bright galaxies.