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Also known as
Pacific Rhododendron, Pacific Rhododendron, Pacific rhododendron, California rosebay, California rhododendron, coast rhododendron and big leaf rhododendron
Taxonomy
Rhododendron macrophyllum
Rhododendron
Ericaceae
Ericales

How to care for Big Leaf Rhododendron

How often to water your Big Leaf Rhododendron

every 9
Big Leaf Rhododendron needs 0.5 cups of water every 9 when it doesnât 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.
Water 0.5 cups every
9

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

a window
Big Leaf Rhododendron love being close to bright, sunny windows đ.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Big Leaf Rhododendron does not tolerate low-light đ«.
Select your region to see how the current weather in your area affects the placement of Big Leaf Rhododendron in your home đĄ.

How to fertilize Big Leaf Rhododendron

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 itâs 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 yearâwhichever comes first.

Big Leaf Rhododendron prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Sunlight Needs
Big Leaf Rhododendron requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive đȘ. Select your region to see how the current weather in your area affects the placement in your home đĄ.
Toxicity
Greg does not have confirmed data on this plantâs toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, itâs always best to consult a medical professional.
If you or someone else ingested this plant, call Poison Control at US (800) 222-1222. If a pet consumed this plant, contact your veterinarian or the ASPCA at US (888) 426-4435.
Humidity
Big Leaf Rhododendron doesnât require additional humidity. Plants absorb most water through their root system rather than their leaves, so the best way to provide humidity for your plants is through watering the soil.
Soil
Big Leaf Rhododendron does best in well-draining soil. A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!
Fertilizer
Big Leaf Rhododendron grows very slowly and doesnât require added fertilizer. Replacing your plantâs potting soil once a year should provide them with more than enough nutrition. Remember, plants get their energy from sunlight, not fertilizer!
Native Region
Big Leaf Rhododendron is native to Asia and North America.
Growth Pattern
Big Leaf Rhododendron will branch off as it grows. To encourage branching, pinch off the newest growth at the tip and the stem will branch off into two.
Care Summary for 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 4â pot your plant is in, and that it doesnât get direct sunlight.
