Rosa 'Lambert Closse' is a cold-hardy Canadian Explorer series shrub rose known for its repeat blooms of deep to medium pink, mildly fragrant flowers that resemble classic hybrid teas. It is disease-resistant and generally low-maintenance, making it a good choice for northern gardeners. Hardiness: Extremely cold-hardy, generally rated for USDA Zones 3a to 4a, capable of surviving harsh Canadian winters with minimal protection.Flowers: Produces double, full blooms (41-50 petals), about 3 inches in diameter, that are deep pink in the inner petals with a lighter blush on the reverse, and have a mild, sweet fragrance.Bloom Period: An ever-blooming or continuous bloomer, it flowers in clusters from June until the first frost, especially with regular deadheading.