Sweet Auburn: The Magazine of the Friends of Mount Auburn Mount Auburn as a Horticultural Innovator | Page 5

a history of horticultural innovation began winding down its operations at the Case Estates in Weston, Mass. The Cemetery was invited to take a large quantity of plant material (mature sized trees and shrubs) over a period of many years. Much of this material was used to complete the latest large-scale development project on the grounds: the landscape planting of the Meadow area. Flexibility, Adaptability, and Changing Tastes and several ice-storms, all of which took a major toll on Mount Auburn’s landscape. As each of these unanticipated challenges was met with efforts to restore the landscape, the lesson of diversification was amplified. A simplified take-home lesson would be, “Don’t put all your eggs in one basket.” Adaptability then, can be seen as both a landscape with inherent strength from diversity in plant species, and a horticulture program that can ramp up and customize production for protection from disasters and as responses to them. In 2007, Mount Auburn’s horticulture staff and Trustees hosted a day-long conference with a panel of some of the leading experts and administrators from the larger botanic gardens and arboreta in the country. The purpose of the event was to consider, on the 175th anniversary of the Cemetery’s founding, how we should strategically plan for managing this landscape, both in the short-term and beyond. Among the many useful recommendations agreed to on that day was a clear consensus that Mount Auburn should continue Mount Auburn’s ability to produce certain quantities and types of plants throughout its history shows a flexibility that was necessary to match the dynamic changes that occurred. The sod production needs of the 1930s mentioned above coincided with the rise in popularity of the landscape lawn style. In recent decades, the extent of that popularity became evident as our turf maintenance operations faced the daunting task of caring for vast lawn areas with fewer resources. Grass was found throughout the grounds despite sometimes difficult terrain and the more than 40,000 monuments and other structures that presented obstacles. The effort to replace turf on difficult slopes with alternative groundcovers (primarily for safety reasons) was begun in the 1970s and continues today. The initiative taught us how to annually produce thousands of plants of ivy (Hedera helix), creeping euonymus Examples of successful ornamental grass and groundcovers include (l-r) fountain grass (Tennisetum (Euonymus fortunei), pachysandra alopecaroides, ‘moudry’), Canadian ginger (Asarum canadense), and myrtle (Vinca minor) and Siberian (Pachysandra terminalis), and myrtle cypress (Microbiota decussata). (Vinca minor). When experience showed the first two of these somewhat problematic, we transitioned to new crops of to diversify its plant collections. This was welcome news, barren strawberry (Waldsteinia ternata) and yellow archangel and not entirely unexpected. Attempts had already been (Lamiastrum galeobdolon). These groundcovers now growing underway to broaden the range of species growing here. on the many slopes that line roadways and paths not only When the Hemlock Woolly Adelgid problem initially hit, satisfy some of the safety concerns for mowing equipment, the Cemetery had nearly 400 hemlock trees in the collections. but also serendipitously evoke past horticultural periods It was by far the most represented conifer on the site. After when diverse plantings were used to highlight topography determining the limits of how many hemlock trees we and create textured layers in the landscape. could manage in a sustainable way, roughly a third were removed and we began adding many new conifers to the Adaptability can be considered in the context of how collections, a practice which has continued to today. well specific plants grow on any given site. It could also be considered in terms of the people charged with establishing and caring for the plants on a site. For Mount Auburn’s Diversification and Landscape Character horticulture staff, we can note a long series of challenges An assessment of the grounds in 1993 revealed remnants of caused by catastrophes and near disasters. In the 20th many different landscape character styles from the Cemetery’s century, the disease that eliminated the Lombardy poplar long history. Elements could be found that evoked the early appeared in 1915. The American Chestnut Blight hit during rural cemetery period, the rus tic country burial grounds the 1930s. The Hurricane of 1938 destroyed 811 of our trees style, the Victorian period style, the 20th century lawn (16% of the collections) and many other plantings. Dutch landscape, ornamental parkland, and others. Even though Elm Disease appeared in the 1950s. The Gypsy Moth Epidemic these elements were sometimes only subtle traces in the reached its peak in the 1970s. In recent years, starting in the landscape, an attempt was made to draw a map demarking 1980s, we’ve seen the rise of Beech Tree Decline, Dogwood a series of Landscape Character Zones. Anthracnose, Hemlock Woolly Adelgid, three hurricanes Fall 2010 | 3