The Winter King Hawthorn, scientifically known as Crataegus viridis ‘Winter King’, stands out as a highly favored ornamental tree in many landscapes. Its appeal stems from a combination of attractive features that provide year-round interest. However, despite its many desirable qualities, this particular tree possesses a very distinctive and often strong odor, especially noticeable during its flowering period. This characteristic can be a significant consideration for gardeners and homeowners when selecting a planting location.
Understanding the Hawthorn Scent
The aroma emanating from Winter King Hawthorn flowers is widely described as unique and often quite potent. Many individuals liken it to the smell of decaying organic matter, such as rotting fish. This strong, unpleasant odor becomes particularly pronounced during the tree’s blooming season, which typically occurs in late spring to early summer.
The intensity of this scent can be surprising, and it has the capacity to permeate the surrounding environment. This means that the smell can spread beyond the immediate vicinity of the tree, making it a notable factor for those considering its placement near living spaces or frequently used outdoor areas.
Biological Purpose of the Scent
The peculiar scent of the hawthorn flower serves a specific biological purpose, rooted in its evolutionary history. This distinctive aroma is primarily attributed to the presence of a chemical compound known as trimethylamine (TMA). This same compound is naturally found in other organic materials, including decaying fish, contributing to their characteristic odors.
The release of trimethylamine is a sophisticated adaptation designed by the tree to attract specific types of pollinators. Unlike many flowering plants that rely on bees or butterflies, hawthorns primarily target insects such as flies and other carrion-feeding species. These insects are naturally drawn to the smell of decaying organic matter, making the hawthorn’s scent an effective lure for their pollination services.
Mitigating the Odor
For individuals considering planting a Winter King Hawthorn or those already living with one, several strategies can help manage the tree’s distinctive odor. Strategic placement is a primary consideration; situating the tree away from frequently opened windows, main entryways, and high-traffic outdoor living areas can significantly reduce exposure to the scent. It is also beneficial to consider the prevailing wind patterns in your yard, as wind can carry the odor over considerable distances.
For existing trees, light pruning of flower clusters might offer a modest reduction in the scent’s intensity, though this approach should be balanced with aesthetic considerations and the tree’s overall health. It is important to note that while the smell can be unpleasant for humans, it is not considered harmful to people or pets.
Other Notable Features of Winter King Hawthorn
Beyond its distinctive floral scent, the Winter King Hawthorn boasts several other attributes that contribute to its popularity as a landscape tree. It produces attractive white flowers in spring, which precede the development of its vibrant red berries. These persistent berries remain on the tree through much of the winter, offering both visual interest and a valuable food source for various bird species.
The tree also features distinctive exfoliating bark, which peels away to reveal an appealing orange-brown inner layer, adding to its ornamental value, particularly in colder months. Furthermore, Winter King Hawthorn exhibits commendable resistance to common diseases, including cedar-apple rust, a frequent concern for many hawthorn varieties. Its adaptability to a range of soil conditions further enhances its appeal for diverse garden settings.