The process to remove caffeine from coffee beans using water was first developed in Switzerland in the 1930s, but was only trademarked as the Swiss Water Process in the '80s by a company in Vancouver, British Columbia.
How to Grow Primrose Flower Plants. Primrose is a hardy perennial flower, that includes a wide range of varieties. Primrose is native to Asia, Europe, and North America. In North America, they originally were found from the Midwest to the Northwest areas of the U.S.
The primrose plant family, known botanically as primula, is made up of low-growing flowering perennials. Bloom shape, size and color vary, but most flower from mid-spring through mid-summer and are hardy in zones 4a to 8b. Beyond their cold hardiness zone they are grown as annuals.tep 3. Prune primrose only as needed to remove spent blooms or a damaged or dying leaf. Cut dead leaves off at the base of the plant if they do not come off with the gentlest tug. The bloom stems are tine so your hands can be the best tools to pinch off the spent bloom and keep the flower spike and plant looking tidy.