Gather your supplies. Trim the wire on the greenery stems so that it tucks in nicely into the wreath and doesn't poke out the back.
Place two of the greenery stems in between the grapevine twigs. Tuck them in nice and tight. Have one stem going up, and the other one going down. Tuck one more greenery stem on each end to add a bit more fullness.
Hot glue the pumpkins onto the wreath. Go slowly, and hold each pumpkin in place until the glue dries.
Add extra greenery stems that are smaller, anywhere you'd like, to create fullness. Secure any loose areas with hot glue or floral wire.
Cut a loop of ribbon and tie it around the wreath for hanging.
Notes
If you live in a hot climate, and it doesn't cool off in the fall, you might consider wiring the pumpkins onto the wreath. You can poke floral wire sticks through the plush pumpkin in one side (towards the bottom of the pumpkin) and out the other, and then twist the wire onto the wreath.Give the wreath a good dusting at the end of the season to clean off any debris from hanging outside. Place in a wreath bag or box. Then store it in a place that allows it to lie flat and not compressed.