Thats normal. I have burrs on mine....and if you allow new shoots to climb your current vines than you can harvest in July and again in September.
Primary: DFH 60 IPA
Secondaty: Blond Ale, Apfelwine, Crandaddy mead
Bottle: Blue moon clone,Kolsch, Eds House Ale, Barley wine, Stone IPA, Oatmeal stout, Hefe,
Drinking: 60 minute IPA, Honkers Ale, Wheat, cherry wheat, Appfelwine,
On Deck: Imperial Stout,