Plant Care Tithonia Rotundifolia

Tithonia Rotundifolia

Also known as

Mexican Sunflower, Mexican Sunflower and Red sunflower


Tithonia rotundifolia

How to care for Tithonia Rotundifolia


How often to water your Tithonia Rotundifolia

Water needs for Tithonia Rotundifolia
0.5 cups
every 9

Tithonia Rotundifolia needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot located in Tucson, 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 Tithonia Rotundifolia

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 Tithonia Rotundifolia in Tucson, Arizona

Tucson, Arizona

50% Low

Growing Tithonia Rotundifolia in Tucson right now

Light needs for plant Tithonia Rotundifolia in Tucson, Arizona

Plant growth potential is currently medium 👌

February 7th, 2023

Sunlight energy as measured by “net radiation” in Tucson is currently medium 👌.

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

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Light needs for plant Tithonia Rotundifolia in Tucson, Arizona

Sunlight will increase by 28.5% ☀️

February 2nd, 2023

Tucson is trending towards greater sunlight intensity!

The amount of sunlight in Tucson is expected to increase by 28.5% over the next 2 weeks to an average of 13.8 megajoules of energy per m2 per…

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Light needs for plant Tithonia Rotundifolia in Tucson, Arizona

Daylight will increase by 0.9 hours 📈

February 6th, 2023

This month, Tucson is getting an average of 9.5 hours of clear sky sunlight per day.

Hours of daylight will increase by 9% over the next two weeks. Your plants will get 11.0 total hours of dayligh…

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Finding light for Mexican Sunflower in your home

Light needs and placement for plant Tithonia Rotundifolia: 1ft from a window
1ft or less from
a window

Tithonia Rotundifolia 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 Tucson, Arizona ⛅.

Tithonia Rotundifolia does not tolerate low-light 🚫.


How to fertilize Tithonia Rotundifolia

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

Difficulty Level

Tithonia Rotundifolia 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 Tithonia Rotundifolia

Tithonia Rotundifolia

Tithonia Rotundifolia

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

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

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