72 Microseasons of the Pacific Northwest

Broadleaf lupine (Lupinus latifolius) is the defining wildflower of the Pacific Northwest subalpine zone, and late June marks the opening of its season at elevations between 4,000 and 6,000 feet in the Cascades and Olympics. The dense purple-blue spikes emerge alongside bistort, valerian, and avalanche lily — the first of many waves that will continue transforming the meadows through July and August. But lupine is usually the dominant visual element, sometimes covering entire hillsides in a haze of violet-purple that contrasts dramatically with the cobalt skies, white snowfields, and dark conifer forests of the mountain landscape. Mount Rainier National Park is the most celebrated destination for this phenomenon: Paradise and Skyline Trail are ringed with lupine by late June in most years. North Cascades National Park's Maple Pass Loop above Rainy Pass (Highway 20) reliably shows a June bloom at its lower end, transitioning upward through July. Hurricane Ridge in Olympic National Park frequently has lupine opening at its eastern meadows by the last week of June, alongside the deer that graze the meadows with surprising indifference to visitors. On the BC coast, the meadows of Manning Provincial Park and Garibaldi Provincial Park come into early bloom on south-facing slopes. The ecological significance goes beyond aesthetics: lupines are nitrogen-fixers, drawing atmospheric nitrogen into the thin, rocky, nutrient-poor soils of subalpine meadows and enriching them for other plants. The flower spikes are visited intensively by bumblebees (Bombus spp.), which are among the few pollinators active enough at cool elevations to work the plants reliably. Clark's nutcrackers, ravens, and marmots are characteristic companions in these meadows. The blooms coincide almost exactly with the longest days of the year, and the warm, lingering evening light on a lupine meadow is one of the most visually extraordinary experiences available in the Pacific Northwest.