How to Grow Stunning Hydrangeas in Your Garden

Plant hydrangeas in well-draining, slightly acidic soil with morning sun and afternoon shade, water consistently, and prune after blooming to enjoy vibrant flowers for years.

1. Find Your Perfect Sunlit Spot. Select a spot that gets morning sun and afternoon shade, especially in hot climates. Hydrangeas need about 4-6 hours of sunlight daily but benefit from protection during the hottest part of the day. Ensure good air circulation to prevent fungal diseases, but avoid windy areas that can damage the large flower heads.
2. Build the Foundation. Test your soil pH using a simple soil test kit. Hydrangeas thrive in slightly acidic to neutral soil with a pH between 5.5 and 7.0. Dig a hole twice as wide as the root ball and mix in compost or aged manure to improve drainage and add nutrients. If your soil is heavy clay, add coarse sand or perlite to improve drainage.
3. Get Them in the Ground. Plant hydrangeas in early spring after the last frost or in early fall. Dig a hole as deep as the root ball and twice as wide. Place the plant so the top of the root ball is level with the ground surface. Backfill with your soil mixture, water thoroughly, and add a 2-3 inch layer of mulch around the base, keeping it away from the stem.
4. Master the Moisture Balance. Keep the soil consistently moist but not waterlogged. Hydrangeas need about 1 inch of water per week, including rainfall. Water at the base of the plant rather than overhead to prevent leaf diseases. During hot weather or drought, you may need to water twice weekly. The soil should feel like a wrung-out sponge.
5. Fuel Blooms Without Overfeeding. Feed hydrangeas in early spring with a balanced, slow-release fertilizer like 10-10-10. Apply according to package directions around the drip line of the plant. Avoid high-nitrogen fertilizers which promote leaf growth at the expense of flowers. A second light feeding in mid-summer can boost late-season blooms.
6. Trim Strategically for Success. Prune based on your hydrangea type. For bigleaf and oakleaf hydrangeas, prune immediately after blooming since they flower on old wood. Remove only dead or weak stems and spent flower heads. For panicle and smooth hydrangeas that bloom on new wood, prune in late winter or early spring before new growth starts.
7. Shield Blooms from Frost. In cold climates, protect hydrangeas by applying extra mulch around the base in late fall. For tender varieties, wrap the entire plant in burlap or cover with a protective cloth. Don't prune in fall as the old stems provide winter protection. Remove coverings gradually in spring after the last frost.