What the best way to trim this plant?

I am looking for advice on trimming this plant. Every think I try (shears, electric hedge trimmer) just chews them up. I am close to ripping them out! These plants were here when I moved in. Located in Florida if that helps, I’m not sure on the name of them but they are very common here. http://ift.tt/2bp2QbW

submitted by /u/SSboto
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