Gardeners who love butterflies will have a passion for the paloverde.
(WorldNews Environment)

I`ll never forget that rare cold morning at the National Butterfly Center in Mission, Texas. Monarchs and queen butterflies - cousin butterflies - were roosting in the retama trees waiting for the sun to warm them for flight. I had already fallen in love with the trees` flashy display of thousands of yellow blooms, but also the green bark that seemed so prevalent. Retama means `broom` in Spanish, but the green bark gives it another common name: Mexican paloverde, or green tree. I love both names, but officially its name is `Jerusalem thorn.` It has nothing to do with Israel, and the thorns in the tree are not a reference to Christ or the...