Plant Wee Bit Grumpy® Bigleaf Hydrangea in well-drained, fertile soil with partial to full sun exposure. Space plants about 3-5 feet apart. Water regularly, ensuring soil remains consistently moist but not waterlogged. Apply a balanced, slow-release fertilizer in early spring. Prune after flowering to maintain shape and encourage new growth. Protect from harsh winter conditions by covering with burlap or relocating to a sheltered area. Adjust soil pH to influence bloom color: acidic for blue flowers, alkaline for pink.