I met a lady at a garden club meeting whose father was the farm manager for Jackson & Perkins in the 1950's and 60's, and she used to go visit him at work after school in the growing fields. This was before J&P went corporate. They used to prepare the roses for harvest every November by bringing in a herd of sheep(!). The sheep would eat all the foliage off the roses, and then the sheep would be taken away before they started in on the canes. What was left looked like a cotton field, a forest of bare rose stems with fuzzy white spots everywhere, as the sheep would leave tufts of wool on the rose prickles.