Plant Care Big Leaf Rhododendron

Big Leaf Rhododendron

Also known as

Pacific Rhododendron, Pacific Rhododendron, Pacific rhododendron, California rosebay, California rhododendron, coast rhododendron and big leaf rhododendron


Rhododendron macrophyllum

How to care for Big Leaf Rhododendron


How often to water your Big Leaf Rhododendron

Water needs for Big Leaf Rhododendron
0.5 cups
every 9

Big Leaf Rhododendron needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Big Leaf Rhododendron

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Pacific Rhododendron in your home

Light needs and placement for plant Big Leaf Rhododendron: 1ft from a window
1ft or less from
a window

Big Leaf Rhododendron love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Big Leaf Rhododendron does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Big Leaf Rhododendron in your home 🏡.


How to fertilize Big Leaf Rhododendron

Nutrient, fertilizer, and repotting needs for Big Leaf Rhododendron: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Big Leaf Rhododendron after it doubles in size or once a year—whichever comes first.

Water Needs
Sunlight Needs
Native Region
Growth Pattern

Care Summary for Big Leaf Rhododendron

Big Leaf Rhododendron

Big Leaf Rhododendron

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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