Plant Care Browneyed Susan

Browneyed Susan

About Browneyed Susan

Rudbeckia triloba is a biennial or short-lived perennial that grows easily in average, moist, well-drained soils. The plant's typical height is 3 to 5 feet with 2 to 4 inch leaves and 2 to 3 inch yellow flowers with dark purple-brown center disks. The leaves often have 3 lobes and a rosette of leaves that originate at the base of the stem persists through the winter.


Rudbeckia triloba

Also known as

Brown-eyed susan, Thin-leaved coneflower and Three-leaved coneflower

How to care for Browneyed Susan


How often to water your Browneyed Susan

Water needs for Browneyed Susan
0.5 cups
every 9

Browneyed Susan needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot located in Phoenix, Arizona.

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 Browneyed Susan

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.

Plant care guide for Browneyed Susan in Phoenix, Arizona

Phoenix, Arizona

46% Low

Growing Browneyed Susan in Phoenix right now

Light needs for plant Browneyed Susan in Phoenix, Arizona

Plant growth potential is currently low 📉

January 29th, 2023

Sunlight intensity as measured by “net radiation” in Phoenix is currently low 📉.

The availability of high quality sunlight in your home impacts ability for plants to thrive and is key in determini…

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Light needs for plant Browneyed Susan in Phoenix, Arizona

Sunlight will increase by 27.2% ☀️

January 29th, 2023

Phoenix is trending towards greater sunlight intensity!

The amount of sunlight in Phoenix is expected to increase by 27.2% over the next 2 weeks to an average of 12.9 megajoules of energy per m2 p…

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Light needs for plant Browneyed Susan in Phoenix, Arizona

Daylight will increase by 0.8 hours 📈

January 29th, 2023

This month, Phoenix is getting an average of 9.2 hours of clear sky sunlight per day.

Hours of daylight will increase by 8% over the next two weeks. Your plants will get 10.7 total hours of daylig…

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Finding light for Browneyed Susan in your home

Light needs and placement for plant Browneyed Susan: 1ft from a window
1ft or less from
a window

Browneyed Susan love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to ensure it receives enough light to survive during this time of reduced sunlight intensity in Phoenix, Arizona ⛅.

Browneyed Susan does not tolerate low-light 🚫.


How to fertilize Browneyed Susan

Nutrient, fertilizer, and repotting needs for Browneyed Susan: 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 Browneyed Susan after it doubles in size or once a year—whichever comes first.

When to repot Browneyed Susan

Nutrient needs for plant Browneyed Susan in Phoenix, Arizona

Is this a good time of year to repot? No ⏳

January 26th, 2023

The growing potential in Phoenix is low 📉.

Repotting in late fall or winter when the day lengths are shorter can be very stressful for a plant and cause it to go into shock.

It's best to repot…

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Difficulty Level

Browneyed Susan is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Water Needs
Sunlight Needs
Growth Pattern
Growing Outdoors

Care Summary for Browneyed Susan

Browneyed Susan

Browneyed Susan

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

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

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