Vaccinium macrocarpon 'Pilgrim' is an American cranberry selection that you can use as a low, spreading groundcover in consistently moist, acidic soils. If you have a bog garden, rain-garden edge, or other wet spot, this plant can bring glossy evergreen foliage, delicate spring-to-summer flowers, and a crop of tart, bright red berries later in the season.
Give your plant full sun for best flowering and fruiting, though it will also grow in part shade. Keep the root zone evenly moist; this is not a drought-tolerant plant, and it performs best where the soil stays damp and cool. It can handle periodic flooding, but it should not be allowed to dry out for long periods once established.
Plant it where it can spread and knit together into a dense mat. The stems root and spread, creating a carpet-like look that works well at the front of a bed or in naturalized plantings with other acid-loving species. Mulch lightly to help retain moisture, and avoid heavy cultivation that disturbs shallow roots and runners.
Fruiting typically follows flowering, with berries ripening from late summer into fall. You can harvest for fresh use or cooking, and the fruit also provides a valuable food source for birds and other wildlife. For the most reliable berry set, keep competing weeds down, maintain steady moisture, and avoid high heat stress by choosing a site with cool, wet soil conditions.