private static ArrayList<Tree> setUpTrees() {
		ArrayList<Tree> trees = new ArrayList<Tree>();

		GregorianCalendar[] juneRange = {new GregorianCalendar(2014, GregorianCalendar.JUNE, 0), new GregorianCalendar(2014, GregorianCalendar.JUNE, 30)};
		Tree juneTree = new Tree("june tree", juneRange);
		trees.add(juneTree);

		GregorianCalendar[] novemberRange = {new GregorianCalendar(2014, GregorianCalendar.NOVEMBER, 0), new GregorianCalendar(2014, GregorianCalendar.NOVEMBER, 30)};		
		Tree novemberTree = new Tree("november tree", novemberRange);
		trees.add(novemberTree);
		
		Tree neverTree = new Tree("never tree");
		trees.add(neverTree);
		
		GregorianCalendar[] alwaysRange = {new GregorianCalendar(1000, GregorianCalendar.JANUARY, 0), new GregorianCalendar(10000, GregorianCalendar.JANUARY, 0)};		
		Tree alwaysTree = new Tree("always tree", alwaysRange);
		trees.add(alwaysTree);
		
		return trees;
	}