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How to Grow Hydrangea Plant Indoors

Updated: June 20, 2023

Hydrangeas are beautiful flowering plants that add a touch of elegance and charm to any indoor space. While they are typically grown outdoors, it is possible to successfully grow hydrangea plants indoors with the right care and attention. In this article, we will explore the steps and tips for growing hydrangea plants indoors.

Choosing the Right Hydrangea Variety

The first step in growing hydrangeas indoors is to choose the right variety. Not all hydrangea varieties are suitable for indoor cultivation, so it is important to select a variety that is well-suited to growing in pots or containers. Some popular indoor hydrangea varieties include ‘Endless Summer’, ‘Mini Penny’, and ‘Pia’.

Selecting the Right Container

Once you have chosen the right hydrangea variety, it’s time to select the right container. Hydrangeas have extensive root systems, so it’s important to choose a container that is large enough to accommodate their growth. Opt for a container that is at least 12 inches in diameter and has drainage holes at the bottom to prevent waterlogging.

Providing Adequate Sunlight

Hydrangeas thrive in bright, indirect sunlight. Place your indoor hydrangea plant near a window where it can receive at least 4-6 hours of sunlight each day. If your home does not have sufficient natural light, you can supplement with artificial grow lights to ensure your plant receives the necessary amount of light.

Maintaining Optimal Temperature and Humidity

Hydrangeas prefer moderate temperatures between 60-70°F (15-21°C). Avoid placing your indoor hydrangea plant near drafty windows or vents as this can cause temperature fluctuations. Additionally, maintaining a humidity level of around 50% is ideal for these plants. You can increase humidity by placing a tray of water near the plant or using a humidifier.

Watering and Fertilizing

Proper watering is essential for the health and growth of your indoor hydrangea plant. Hydrangeas prefer moist soil, so make sure to water them thoroughly whenever the top inch of soil feels dry. However, be careful not to overwater as this can lead to root rot. Allow excess water to drain from the bottom of the container to prevent waterlogging.

Fertilize your hydrangea plant once a month during the growing season with a balanced, water-soluble fertilizer. Follow the instructions on the fertilizer packaging for dosage and application. Avoid fertilizing during the dormant period, which typically occurs in winter.

Pruning and Deadheading

Regular pruning and deadheading are important for maintaining the health and appearance of your indoor hydrangea plant. Prune any dead or damaged branches as soon as you notice them. Deadheading, or removing spent flowers, encourages new growth and prolongs the blooming period of your hydrangea.

Dealing with Pests and Diseases

Like any plant, hydrangeas can be susceptible to pests and diseases. Common pests that may affect indoor hydrangeas include aphids, spider mites, and scale insects. Regularly inspect your plant for any signs of infestation such as discolored leaves or webs. If you notice any pests, treat them with insecticidal soap or neem oil according to the instructions on the product label.

Repotting

As your indoor hydrangea plant grows, it may outgrow its current container. If you notice that the roots are overcrowded or coming out of the drainage holes, it’s time to repot your plant into a larger container. Choose a pot that is one size larger than the current one and use fresh potting soil to ensure proper drainage.

Enjoying the Blooms

With proper care and attention, your indoor hydrangea plant will reward you with beautiful blooms. Depending on the variety, hydrangeas can bloom in various colors including pink, blue, white, and purple. Enjoy the vibrant colors and delicate petals of your hydrangea flowers by displaying them in a vase or using them for floral arrangements.

In conclusion, growing hydrangeas indoors is a rewarding endeavor that allows you to enjoy the beauty of these flowering plants year-round. By selecting the right variety, providing adequate sunlight, maintaining optimal temperature and humidity, watering and fertilizing properly, pruning and deadheading, dealing with pests and diseases, repotting when necessary, and enjoying the blooms, you can successfully grow hydrangea plants indoors and enhance the ambiance of your home or office space.