Eclipse Hydrangea
Hydrangea Macrophylla
Hydrangea Macrophylla, commonly known as Eclipse Hydrangea, is celebrated for its stunning blooms and lush foliage. Native to Asia, this plant thrives in partial shade and moist soil, making it a favorite among gardeners looking to add vibrant color to their landscapes.
Everything it needs
9 essentials at a glance
Watering
Hydrangea Macrophylla prefers consistently moist soil, requiring watering about once a week.
During hot summer months, you may need to increase frequency to twice a week. Ensure the soil is well-drained but retains some moisture. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and browning leaf edges.
Light
This plant thrives in partial shade, ideally receiving 4-6 hours of morning sun and afternoon shade.
Too much direct sunlight can scorch the leaves, while too little light can hinder blooming. A location near a north or east-facing window is ideal.
Soil
Hydrangea Macrophylla prefers well-draining, loamy soil with a pH range of 5.5 to 6.5.
A potting mix that includes peat moss, compost, and perlite is recommended to ensure proper drainage and nutrient retention.
Humidity
This hydrangea enjoys moderate humidity levels, ideally between 40-60%.
To increase humidity, you can mist the leaves regularly or place a humidity tray filled with water and pebbles beneath the pot. Signs of low humidity stress include browning leaf tips and wilting.
Temperature
The ideal temperature range for Hydrangea Macrophylla is between 60-75°F (15-24°C).
It is hardy in zones 5-9, tolerating cold down to 20°F (-6°C) but may struggle in extreme heat above 90°F (32°C). Protect from frost in colder months.
Fertilizing
Use a balanced fertilizer with an NPK ratio of 10-10-10 or a slow-release fertilizer during the growing season.
Fertilize every 4-6 weeks from spring to early summer. Signs of nutrient deficiency include yellowing leaves and poor blooming.
Pruning
Prune Hydrangea Macrophylla in late winter or early spring before new growth begins.
Use sharp, clean pruning shears to remove dead or damaged wood and shape the plant. Deadheading spent blooms can encourage new growth and more flowers.
Repotting
Repot Hydrangea Macrophylla every 2-3 years or when the roots outgrow the pot.
Signs it needs repotting include roots growing out of the drainage holes or stunted growth. Choose a pot that is 1-2 inches larger in diameter, and gently loosen the root ball before placing it in fresh potting mix.
Propagation
Hydrangea Macrophylla can be propagated through stem cuttings taken in late spring or early summer.
Cut a 4-6 inch section of a healthy stem, remove the lower leaves, and dip the cut end in rooting hormone. Plant in a pot with moist potting mix, cover with a plastic bag to maintain humidity, and place in indirect light until roots develop, typically within 4-6 weeks.
When it's unhappy
Yellow leaves
Why it happens
This can be caused by over-watering, nutrient deficiency, or insufficient light.
How to fix it
Check the soil moisture, adjust watering habits, and consider fertilizing if nutrient deficiency is suspected.
Wilting
Why it happens
Wilting can result from under-watering or extreme heat.
How to fix it
Ensure consistent watering, especially during hot weather, and provide shade during the hottest parts of the day.
Root rot
Why it happens
Over-watering or poorly draining soil can lead to root rot.
How to fix it
Allow the soil to dry out between waterings and ensure the pot has adequate drainage holes.
Poor blooming
Why it happens
Insufficient light or nutrient deficiency can hinder blooming.
How to fix it
Ensure the plant receives adequate light and consider fertilizing with a balanced fertilizer.
Browning leaf edges
Why it happens
This can be a sign of low humidity or under-watering.
How to fix it
Increase humidity around the plant and ensure consistent watering.
Care through the year
Spring
In spring, prune any dead wood and fertilize to encourage new growth. Ensure the plant receives adequate water as it begins to bloom.
Summer
During summer, monitor soil moisture closely and provide shade during extreme heat. Regularly deadhead spent blooms to promote further flowering.
Fall
In fall, reduce watering as the plant prepares for dormancy. Mulch around the base to protect roots from frost.
Winter
In winter, protect the plant from harsh frost by covering the base with mulch. Reduce watering significantly as the plant enters dormancy.
Toxicity & Safety
Hydrangea Macrophylla is considered mildly toxic to pets and children. The leaves and flowers contain cyanogenic glycosides, which can cause nausea, vomiting, and diarrhea if ingested. Always keep this plant out of reach of pets and small children.
Good to know
Why are my Hydrangea Macrophylla leaves turning yellow?
Yellow leaves can indicate over-watering, nutrient deficiency, or insufficient light. Check your watering schedule and consider fertilizing if needed.
How often should I water my Hydrangea Macrophylla?
Water your Hydrangea Macrophylla once a week, increasing to twice a week during hot weather. Ensure the soil remains consistently moist but not soggy.
What is the best fertilizer for Hydrangea Macrophylla?
A balanced fertilizer with an NPK ratio of 10-10-10 is ideal. Fertilize every 4-6 weeks during the growing season for optimal growth.
When should I prune my Hydrangea Macrophylla?
Prune your Hydrangea Macrophylla in late winter or early spring before new growth begins. This helps maintain shape and encourages blooming.
How can I increase humidity for my Hydrangea Macrophylla?
To increase humidity, mist the leaves regularly or place a humidity tray filled with water and pebbles under the pot.
Why is my Hydrangea Macrophylla wilting?
Wilting can be caused by under-watering or extreme heat. Ensure consistent watering and provide shade during the hottest parts of the day.
How do I propagate Hydrangea Macrophylla?
Propagate through stem cuttings taken in late spring or early summer. Use rooting hormone and keep the cuttings in a humid environment until roots develop.
Grows well with
Related care guides
Explore remedies
Track this plant in your garden.
Set care reminders, log growth, and join a community of plant lovers.