The Portland rose was discovered in 1775 by the Duchess of Portland. It was also known as Damask Perpetual and was considered a great discovery because it was among the very first reblooming garden roses. Portland roses are considered one of the very best old roses for the small garden because they tend to form shrubs that are only 3-4 feet tall and wide. In addition, the blooms are very highly scented. Blooms range in color from pink to red. Portlands have dark green foliage that holds up well and helps show off the blooms. Portlands may be a little tender for very cold USDA hardiness zones. Portlands benefit from winter protection in zones 4-5. It has been found that Portlands need about 2–3 years to get established in a new location before reliable bloom can be expected.