Complex sentence: In Florida, these trees are subject to frost damage and produce multiple stems with weakly attached trunks-in the 2004 hurricane season, many of these trees failed under the 160 km/h winds.
Split into simpler sentences: In Florida, these trees are subject to frost damage and as a result produce multiple stems with weakly attached trunks. In the 2004 hurricane season, many of these trees failed under the 160 km/h winds.