How to Grow Bigleaf Hydrangea Plant Indoors

Bigleaf hydrangeas, also known as Hydrangea macrophylla, are beautiful flowering plants that can brighten up any indoor space with their large, showy blooms. While they are typically grown outdoors, it is also possible to successfully grow bigleaf hydrangeas indoors with the right care and conditions. In this article, we will provide you with a comprehensive guide on how to grow bigleaf hydrangea plants indoors and enjoy their stunning flowers year-round.

Choosing the Right Container

When growing bigleaf hydrangeas indoors, it is essential to choose the right container for your plant. Select a container that is large enough to accommodate the mature size of the plant, as well as one with drainage holes at the bottom to prevent waterlogging. Opt for a high-quality potting mix that is well-draining and rich in organic matter to provide your hydrangea with the nutrients it needs to thrive.

Providing Adequate Light

Bigleaf hydrangeas thrive in bright, indirect light when grown indoors. Place your plant near a south or west-facing window where it can receive ample sunlight without being exposed to direct sunlight, which can scorch its leaves. If your indoor space lacks sufficient natural light, consider supplementing with a grow light to ensure your hydrangea receives the light it needs to bloom and grow.

Maintaining Proper Humidity Levels

Bigleaf hydrangeas prefer high humidity levels, making them well-suited for indoor growing environments. To increase humidity around your plant, mist the leaves regularly with water or place a humidifier nearby to create a humid microclimate. Avoid placing your hydrangea near heating or cooling vents, as excessive dry air can cause its leaves to wilt and brown.

Watering and Fertilizing

Proper watering is crucial for the health of your bigleaf hydrangea plant. Water your plant when the top inch of soil feels dry to the touch, taking care not to overwater or allow standing water in the saucer. Use a balanced liquid fertilizer formulated for flowering plants during the growing season to promote healthy growth and abundant blooms. Reduce fertilization during the dormant period in winter when growth slows down.

Monitoring Temperature and Air Circulation

Bigleaf hydrangeas thrive in temperatures between 60-70°F (15-21°C) during the day and slightly cooler temperatures at night. Avoid placing your plant near drafts or sudden temperature fluctuations, as this can stress the plant and affect its growth. Ensure adequate air circulation around your hydrangea by opening windows periodically or using a fan on low speed to prevent stagnant air.

Pruning and Deadheading

Regular pruning is essential for maintaining the shape and health of your bigleaf hydrangea plant. Prune dead or damaged branches as needed throughout the year to encourage new growth and improve airflow within the plant. Deadhead spent blooms promptly to redirect energy back into flower production and prevent seed formation, which can divert resources from blooming.

Dealing with Pests and Diseases

Bigleaf hydrangeas are relatively pest and disease-resistant when grown indoors, but they may still be susceptible to common issues such as aphids, spider mites, and powdery mildew. Monitor your plant regularly for signs of pests or diseases and treat them promptly with organic insecticidal soap or neem oil if necessary. Ensure good air circulation around your plant to prevent fungal infections.

Repotting and Propagation

Repot your bigleaf hydrangea plant every 2-3 years in early spring to refresh the soil and provide more room for root growth. Choose a slightly larger container than its current one and carefully loosen the roots before transplanting. You can also propagate your hydrangea through stem cuttings taken in spring or summer by placing them in a rooting hormone and planting them in moist potting mix.

Enjoying Your Indoor Bigleaf Hydrangea

By following these tips and guidelines for growing bigleaf hydrangeas indoors, you can create a stunning display of colorful blooms in your home year-round. With proper care and attention to its specific needs, your indoor hydrangea plant will reward you with lush foliage and beautiful flowers that will brighten up any room. Embrace the beauty of nature indoors with a thriving bigleaf hydrangea plant that adds elegance and charm to your living space.