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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 California Rhododendron
How often to water your California Rhododendron

every 9
California 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.
Water 0.5 cups every
9
Finding light for Pacific Rhododendron in your home

a window
California Rhododendron love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
California Rhododendron does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of California Rhododendron in your home 🏡.
How to fertilize California 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 it’s likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your California Rhododendron after it doubles in size or once a year—whichever comes first.
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Help!! It my Bonsai dead or just fixing to grow new leaves?? #PinkAzaleaBonsai
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Does anyone know if the drip tray is necessary and do you keep it moist?
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Half of my leaves are dying but the other side is growing great #PinkAzaleaBonsai
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My plants is dying how can I perk it up #Rhododendron
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Some of the tips of my Azalea’s leaves have a brown line followed by a pale green. I checked the soil before watering and it doesn’t feel moist at the top so I don’t think it’s over watering. Any ideas? #PinkAzaleaBonsai
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I ordered this plant and it was already in bad shape. Still trying to save it, I can't tell if I should give up or not. It's still drinking water but those leaves. #PinkAzaleaBonsai
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can anyone tell me what could these brown spots on the edges of my pacific rhododendron's leaves be? (or at least i think it is a pacific rhododendron) i have kept it away from direct sunlight, 3,5m from the window.
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Brown leavea fell off #FloristAzalea any idea what could be wrong? Leaves fell off after turning brown. Watered once a week #plantsmakepeoplehappy
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My plant stopped blooming but looks like there is new growth. Is that normal? How soon will it bloom again? #FloristAzalea
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Browning and curling leaves on azaleas! My azaleas are having a super rough time this summer. I saw their leaves start to brown and curl, so I moved them into a little@more shaded area. I thought maybe the sun was beating them up too much. Then I noticed they were drying out faster between waterings so I started watering everything the soil was dry (3-4 days). But they look like they are still getting worse. Pleas help!
California 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
California Rhododendron requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.
🐶 🐈 👶 Toxicity
Greg does not have confirmed data on this plant’s toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, it’s 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
California Rhododendron doesn’t 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
California Rhododendron is very sensitive to dry soil, so choose a potting soil that retains moisture. A good soil will still drain well and contain lots of organic matter such as coco coir or sphagnum moss.
💩 Fertilizer
California Rhododendron should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as it’s refreshed yearly, you shouldn’t need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!
🌎 Native Region
California Rhododendron is native to Asia and North America.
⬆️ ⬇️ Growth Pattern
California 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.
🧐 Troubleshooting
When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.
Inspect the soil moisture; too dry or too wet soil can cause problems.
Ensure the plant is getting the right amount of light, as too much or too little can stress it.
Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.
Care Summary for California Rhododendron
California 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.
