· Brent Wilson's Answer
· I'm thinking that what you have is an Acalypha wilkesiana. Here's the Plant File for it: http://www.gardenality.com/Plants/1461/Perennial-Plants/Copper-Leaf-Acalypha.html
In you're zone it is a year round shrub/ bush. Where I'm at in Georgia we use it in container plantings and warm season flower beds as an annual.
To get the plant to fill out you can definitely pinch the tops.
To propagate the Copperleaf Plant follow these instructions:
In your area, you can propagate Copperleaf by taking stem cuttings any time of year.
1 - Take 3-4" long side shoots with a ‘heel’. This means when you take the cutting take a sliver of the parent stem.
2 - Then dip the cutting in hormone rooting powder and plant in individual small pots, maybe 3" diameter or so, containing an equal parts mixture of peat and coarse sand.
3 - Cover with a polythene bag and keep at 70 degrees F. Remove the bag when new growth appears. Using bottom heat also helps.
4 - Pot into 4" pots filled with a premium potting mix when cuttings are about 1' tall. When they've rooted well you can transplant them to garden beds.
Hope this info helped.)