This section is from the book "The Gardener's Monthly And Horticulturist V18", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
Having for a long time grown and flowered the Bouvardias grandiflora and jasminoides, of which species the Humboldtii is a member, and knowing their faulty character as bloomers, though prizing them for their purity and fragrance, I had just cause for many misgivings, when this variety was flatteringly announced and introduced to public notice. But the experience I have had with it justifies me in awarding it a very high place among the many new things of the past few years. The drawing I send you gives the natural size, without exaggeration, but one can form from it but a meagre idea of the plant as flowering upon my grounds last season. I had a large bed containing some thirty-five or forty plants, from thumb pots, and planted in May, which in July was a sight worth a journey to see. Each plant grew most vigorously, sending up from eight to one dozen shoots, which, after attaining a foot or more in height, began budding, and were soon densely loaded with the large jasmine-like blossoms, of the purest white, with a fragrance not unlike the delightful Ste-phanotis, and nearly as powerful as the Tuberose, which, wafted about by the breeze, particularly at evening, was, the delight and wonderment of all persons within its odorous range.
The first flowers opened in July, at which time my beds of Vreelandii, Hogarth, lieantha, and elegans had not the appearance of a bloom, though the plants were the same size when put out, and received equally careful attention. From the time Humboldtii commenced flowering, we were able to cut generous clusters of flowers until frost, and such plants as were carefully lifted with earth adhering to them, and potted, continued to blossom several weeks in the greenhouse. For winter blooming, I think it very valuable, but the plants for this purpose should be grown in six-inch pots, plunged in the border, and not allowed to bloom during summer. This treatment I find the best for all varieties of Bouvardias when required for winter use, as they do not generally transplant into pots very well from the open ground. All the Bouvardias are desirable, - we could hardly dispense with any,- but the Humboldtii opens certainly a new era with this family. Having succeeded in crossing it with the leiantha, a scarlet sort, I may have something interesting to report at some future date.
Bouvardia Humboldtii Corymbiflora.