Also known as
Mexican Sunflower, Mexican Sunflower and Red sunflower
How to care for Tithonia Rotundifolia
How often to water your Tithonia Rotundifolia
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 Pittsburgh, Pennsylvania.
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
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.
Finding light for Mexican Sunflower in your home
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 Pittsburgh, Pennsylvania ⛅.
Tithonia Rotundifolia does not tolerate low-light 🚫.
How to fertilize Tithonia Rotundifolia
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.
Tithonia Rotundifolia is generally considered an easy-to-care-for plant and makes a great choice for beginners!
Tithonia Rotundifolia 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.
Tithonia Rotundifolia 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 🏡.
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.
Tithonia Rotundifolia 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!
Tithonia Rotundifolia is a fast growing plant and may deplete the nutrients in its soil over time. Replenish them with a gentle organic fertilizer or compost every 1-2 months depending on your location and season. Fertilize more often during the growing season and in warmer and brighter climates.
Tithonia Rotundifolia grows vertically and new growth will emerge from the top of the plant.
USDA Hardiness Zone
Tithonia Rotundifolia can be grown outdoors in USDA Hardiness Zones 2a-11b. Find your local hardiness zone here.
Care Summary for Tithonia Rotundifolia
0.5 cups every 9 days
< 1ft from a window
Repot after 2x growth
Based on your location in Pittsburgh, Pennsylvania, the 4” pot your plant is in, and that it doesn’t get direct sunlight.