Possible Clues:

• National emblem of Scotland
• Henry is entering bike race? The French might be prickly
• A gardener should get it up before it gets down
• Finally appoint unfettered old American artist to make national symbol
• Plant list newly included in article
• Harsh weed?
• What will serve as national emblem? It's said the thing here will
• Plant needing unstarted suit to be delivered on time
• Scottish flower
• National emblem saint introduced to Leith, oddly