Foliage and flowers should be dry during nighttime. Certain plant growth regulators may be effective in controlling plant height and in stimulating flowering. The University of Hawaii has introduced over 15 dendrobium cultivars for potted plant production. They are products of a breeding system known as genome breeding. Most are triploids or tetraploids, usually with one amphidiploid parent.
Amphidiploids are tetraploids with a complete diploid genome complement from each species parent.
This condition causes the amphidiploid to breed as if it were a species, with the resulting narrow genetic diversity normally associated with a species population. When an amphidiploid is crossed with a species or another amphidiploid, the hybrid progeny is relatively uniform from seed. Genomes, or chromosome sets, are symbolized by letters that indicate the taxonomic section to which the species belong. Lindley and D. stratiotes Rchb. The various genomes have been combined in many ways to produce a wide assortment of cultivars with distinctive characteristics.