Conifers

 Conifer trees are some of the largest trees on earth. 

Some of them do not have leaves. They have needles. The needles store water. They are completely green all year. The only time they get bare is if their branches fall or if they die or fall down. 

The largest conifer trees on earth are the sequoias. 

I used to think the araucaria conifer from the cretaceous time period was the largest tree ever. Now I know the largest tree ever is actually redwoods and sequoias. I still prefer the araucarias.