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 Boston, Massachusetts.

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 Boston, Massachusetts

Boston, Massachusetts

37% Low

Growing Tithonia Rotundifolia in Boston right now

Light needs for plant Tithonia Rotundifolia in Boston, Massachusetts

Plant growth potential is currently very low 📉

December 1st, 2021

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

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

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Light needs for plant Tithonia Rotundifolia in Boston, Massachusetts

Sunlight intensity will decrease by 31.2% ☀️

December 1st, 2021

Boston is trending towards lower sunlight intensity!

The amount of sunlight in Boston is expected to decrease by 31.2% over the next 2 weeks to an average of 5.6 megajoules of energy per m2 per da…

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Light needs for plant Tithonia Rotundifolia in Boston, Massachusetts

Daylight will decrease by 1.2 hours 📉

December 1st, 2021

This month, Boston is getting an average of 7.2 hours of clear sky sunlight per day.

Hours of daylight will decrease by 11.8% over the next two weeks. Your plants will get 8.9 total hours of dayli…

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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 Boston, Massachusetts ⛅.

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.

When to repot Tithonia Rotundifolia

Nutrient needs for plant Tithonia Rotundifolia in Boston, Massachusetts

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

November 29th, 2021

The growing potential in Boston is very 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 r…

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

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