Agatha Christie: Peril at End House

HELP... I am in the florist shop, I have found all the roses but, I cannot get any of them into a vase and there are 5 or 6 vases that the roses can go into but none will go. I have clicked on all the hints and all I get is a rose. I need a vase. Someone please tell me which vase it is. Thanks, Fylztoy

try the vase about the middle of the
room

It's slim and brown with a bulge in the middle.