Those of you who attended the Orchid Show this year saw that my Dialaelia Snowflake won the Best Cattleya Award. It was a surprise, as I consider this a very underwhelming plant and flower. But, it bloomed for the first time. I acquired the plant from the Green Acres rescue table after helping Dave Veach at an education event. If only all of my rescues could be winners…
The orchid world is filled with complex hybrids, but few possess the understated elegance and historical staying power of Dialaelia Snowflake (now scientifically classified as Caulaelia Snowflake). Registered in 1966 by Stewart Inc., this primary hybrid has become a staple for collectors, prized for its "hybrid vigor" and its crystalline, star-shaped blooms.
Lineage and Morphology
As a primary hybrid, Dialaelia Snowflake is the direct result of crossing two distinct species: Caularthron bicornutum and Laelia albida. This genetic combination allows the plant to inherit the best traits of both parents. From the Caularthron side, it gains a robust growth habit and large, hollow pseudobulbs. From the Laelia side, it inherits a preference for brighter light and a more compact floral structure.
The plant typically produces tall, erect spikes that can carry up to 18 blossoms. Each flower is approximately 2.5 inches wide, featuring a pristine white color that often develops a soft, salmon-pink blush as the bloom matures. This color shift adds a dynamic visual element to the plant’s display, making it a favorite for exhibition.
Cultivation and Care
The success of Dialaelia Snowflake in hobbyist collections is largely due to its adaptability. It thrives in intermediate to warm temperatures and requires bright, filtered light - ideally between 3,000 and 3,500 footcandles. Because its parents are epiphytic (growing on trees), the Snowflake hybrid requires excellent drainage.
Growers often find success mounting the plant on cork bark or tree fern slabs, though it can also flourish in baskets or pots with a very coarse, airy medium. A critical aspect of its care is the "dry-out" period; the roots should never remain soggy, and watering should be significantly reduced during the winter months to mimic its natural dormancy.
Legacy in the Orchid Community
The most famous iteration of this hybrid is the cultivar ‘Frosty’, which earned an Award of Merit (AM) from the American Orchid Society (AOS). This distinction solidified the Snowflake's reputation as a high-quality hybrid. Whether for a beginner looking for a resilient first orchid or a veteran collector seeking a classic white bloom, Dialaelia Snowflake remains a timeless example of successful orchid hybridization.
