Hi there,
Its Autumn here in Melbourne, Australia. I have a row of conifer pine trees - medium size - dark green leaves. They are about 6 metres tall and are due for a good prune back.
I believe they are called Castlewellan Gold.
They don't have seeds, drop many leaves but they do grow.
Here's a link to a photo.
One old grizzled tree pruner however warned me that using fresh conifer pine mulch was a very bad idea and will kill the roses or any other plant.
Is using conifer mulch for the rose garden a bad idea? I didn't realize it was toxic.