The Vinemount Moraine dominates the topography in the northern and western portions of this appellation. This long, narrow, hummocky ridge, less than one kilometre wide, reaches an elevation of 213 metres on its western side and then descends gradually in long rolling slopes southward before grading onto the gentle relief of the Haldimand Clay Plain. Many small streams and their tributaries cross through the appellation, providing some relief to the landscape and ensuring good surface and ground water drainage. Vineyards on the Moraine's gentle south-facing slopes are well oriented to receive maximum sunlight throughout the growing season and well into the fall.
Early spring warming and subsequent early budburst are a feature of this appellation. Further set back from Lake Ontario than other Niagara appellations, and with a slightly shorter growing season, the hot summers ensure that grapes are fully mature at harvest.
The Vinemount Ridge soils have developed on a rich layer of clay loam till and are composed of a large amount of silt and shale derived from the Escarpment. These soils have high water-holding capacities due to their considerable thickness and silty, clay loam texture. Vines enjoy a consistent and reliable water supply throughout the summer but are able to avoid soggy roots with the natural drainage of the underlying Vinemount Moraine.
This appellation has a favourable southern exposure allowing the sun to bring warmth early in the spring and maintain high daytime temperatures throughout the season. Because of its distance from Lake Ontario and exposure to the prevailing southwesterly winds, the area experiences lower nighttime temperatures than areas below the Escarpment and a moderately high diurnal temperature range. While microclimates of particular vineyards vary across this appellation due to relative elevation and exposure to winds, this appellation overall has a shorter growing season relative to other appellations within the Niagara Peninsula.
WIN gratefully acknowledges VQA Ontario as the source for the Terroir backgrounds provided on www.vineandtreefruitinnovations.com
VQA Ontario (2009)