This section is from the book "Commercial Gardening Vol4", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
The true "perpetual" flowering Roses of those we have named is the Tea or Hybrid Tea, the varieties of the present group being rarely so. These, like those of the Rambler class, require a season of preparation before reaching the useful flowering stage, though in a lesser degree than the Ramblers. In a few instances, and where the plants are of good size and well rooted, the maidens may be permitted to flower in the spring following the potting up, though the quality of the flower in no sense compares with that afforded by the more-established example.