A large, ready-to-plant hydrangea shrub sold in a 4.3-gallon (16.3-liter) nursery container, available seasonally at Costco warehouse garden centers. Hydrangeas are among the most popular flowering shrubs in North America, prized for their dramatic, long-lasting blooms that appear from late spring through fall. Blooms can range in color from white and pink to vibrant blue, purple, and lavender depending on the variety and soil conditions.

These substantial container-grown plants are established and ready to transplant directly into the garden or a large decorative pot. At the 4.3-gallon size, they offer a head start compared to smaller nursery plants, allowing for faster establishment and earlier blooms. Most varieties are hardy in USDA Zones 3–9, tolerating a wide range of climates. Plants prefer a location with morning sun and afternoon shade in warmer regions, or full sun in cooler climates. Regular watering is important, especially during the first growing season. Well-draining, slightly acidic soil encourages optimal growth and bloom color.

For bigleaf (macrophylla) varieties, soil pH directly influences flower color — acidic soils (pH below 6) produce blue blooms, while more neutral to alkaline soils (pH above 7) produce pink blooms. At maturity, most hydrangea shrubs reach 3–6 feet in both height and spread, making them excellent specimens for borders, foundation plantings, or as a standalone focal point in the landscape.