Yes, by all means! However, getting them to root, from my experience, is not so easy. The trick is to use a moisture-retentive potting mix (look for one with water-absorbing crystals, or use a self-watering planter that has a reservoir of water at the bottom). Keeping the mix damp but not water-logged is the goal. Keep the pussy willow in a partly shady site so it is less stressed. Grow it in the pot the first season, then you can transplant it into a permanent position if you desire. Good luck!
Luke Miller, editor
Garden Ideas & Outdoor Living magazine