Mars, meanwhile, has two moons â Phobos and Deimos. Like our own Moon, both of the Martian moons are tidally locked to Mars, so they always present the same face to the planet. Compared to our Moon, they are rough and asteroid-like in appearance, and also much smaller.
Hardy pond plants are classified as water plants that will survive the winter up to zone 4. Hardy plants will come back every year and are preferred over tropical plants due to this reason.
One of the hardiest plants I grow is Lemon Balm (Melissa officinalis). Lemon Balm is a hardy perennial that will grow 48 inches high. My favorite time of the year is when the Lemon Balm is in a dome shape. And it smells fantastic-visitors always comment on how wonderful our walkway smells.