Trimming the frequent leafy offenders with scissors will get you about 75% of the way there. To deal with the rest, the ones that seem to flop into the way depending on your stance, cut the toe from an extra long, green sock and pull it onto your sleeve.
You can move the sock around to position it where it's most useful and it usually stays in place even when you have taken the jacket off. Depending on your arm size, you might need to make a little cut in the elastic so it's not too tight.
Ron