My plants, they are mostly shrubs, Woodless, no roots can grow deep. A certain line I exist above, With soil trapped in frigid sleep. My children three they are, and two are opposites too. The third sounds like where we got the words 'yodelayheehoo!'

I am the infant son of kings crown'd with ice and stone. I wear a verdant coat of green that shines when winds are blow'n. I roll and roll with feet unmov'd, on me human youth b'come kings. Some choose to die upon me, Choose wisely before cutting the strings.

In chains yet free, a lion's heart dost roar, For peace and justice, brave he stands once more. In lands of gold and diamonds, he was born, Apartheid's bane, a nation's light reborn.

In Akron we have a special name for this narrow piece of land, although no hellfire or pitchfork is in hand.

I am a word that begins with the letter i. If you add the letter a to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?