Every spring, while half the world gazes at pink-blooming cherry trees or fields of tulips, a less famous but equally mesmerizing phenomenon unfolds in the heart of Spain: the Sierra de Gredos slowly vanishes beneath a blanket of yellow. It is neither a lighting effect nor a photographic trick, but rather the massive blooming of the mountain broom, a shrub that goes almost unnoticed the rest of the year and that, between May and June, transforms the hillsides into a golden ocean that seems to stretch to infinity.
On the north face of Gredos, in the province of Ávila, this spectacle has its own name and even a festival: the Festival del Piorno en Flor, recently renamed Gredos en Flor. Since 2011, tourism entrepreneurs and local residents have come together to champion this humble shrub as the region’s emblem, highlighting a landscape that spans some 65,000 hectares of hillsides carpeted in yellow, spread across more than thirty villages and over 60 natural viewpoints. Navalosa, Navarredonda de Gredos, Hoyos del Espino, San Martín de la Vega del Alberche, and Cepeda la Mora are some of the towns that, in spring, visually blend into the broom thickets to such an extent that, when viewed from the air, the stone houses appear to float atop a golden carpet.
When to see the mountain broom in bloom in Gredos
The natural cycle has its own choreography. By late April, the mountain broom begins to bloom at the lowest elevations; then, throughout May and much of June, the yellow climbs up the slopes, in step with the thawing snow and rising temperatures, until it reaches the mountain passes and highest areas, where it even coexists for a few days with the last patches of snow. In total, up to 23 species of broom have been cataloged in the Gredos area, with different hues and aromas, but it is the intense yellow of Cytisus oromediterraneus that dominates the landscape and the sense of smell: a sweet, resinous scent that permeates roads, trails, and meadows for weeks
The best way to understand why this phenomenon has become a “legend” for photographers and nature lovers is to lace up your boots and go for a walk. Trails such as the ascent to the Laguna Grande de Gredos, the paths starting from Navarredonda, or the routes through the pine forests and broom thickets in the northern part of the mountain range allow you to see up close how these shrubs colonize the sunny slopes and form such dense masses that it is impossible to pass through them without pushing your way through. For a few weeks, the green of the meadows is almost overshadowed by that omnipresent yellow that seems to compete with the sun itself, and the horizon fills with golden brushstrokes that frame, in the background, the granite ridges of the Circo de Gredos.
At a time when large-scale blooms have become a global tourist attraction, the flowering broom offers a less crowded and wilder version of that same wonder. When summer arrives, the petals fall, the landscape returns to its ochre and green hues, and the broom regains its discretion… until next spring, when, once again, Gredos will vanish beneath that legendary yellow blanket.