As summer approaches and the soil begins to dry out, the horticulture team at Bloedel Reserve is preparing for another busy irrigation season. Visitors may notice more sprinklers running throughout the gardens, a sign of the careful work happening behind the scenes to care for the living landscape.
All of the water used at the Reserve, whether for irrigation or for potable use, comes from a single well on the property. Drilled to a depth of 1,250 feet and drawing from 250 feet down, the well provides enough clean, reliable water to meet all of the Reserve’s needs.
Before the late 1990s, irrigation water came from the Swan Pond. Over time, however, the water quality posed problems for plant health. The transition to well water was made to support the long-term health of the gardens.
Much of the current irrigation system dates back to 1980 and remains in use today. As the gardens continue to evolve, the system is updated and repaired regularly to keep pace with changes in plantings and design.
Both automatic and manual irrigation methods are used throughout the Reserve. Lawns and some garden beds are programmed to run based on weather conditions. In other areas, hoses and sprinklers are set out by hand to reach spaces that do not have automated systems.
Irrigation planning is led by the four Garden Area Managers and the Living Collections Curator, with support from other horticulture and facilities staff. Decisions about where, when, and how much to water are made thoughtfully and adjusted frequently to ensure plants receive the water they need—no more and no less.
As part of the Reserve’s commitment to conservation and stewardship, efforts are underway to reduce water use. Beginning this year, turf irrigation is being discontinued on the bluff, visible from the Residence overlook, and in the turf parking area near the main entrance. These changes are expected to save approximately 30,000 gallons of water each week during the summer.
Through careful planning, attention to detail, and a deep respect for the natural world, Bloedel Reserve continues to care for its gardens in ways that honor the land and reflect its values.
