PlantFiles: Mexican Sunflower
Tithonia rotundifolia

I wonder if anyone knows exactly where it is from in Mexico? (Tithonia rotundiflora, that is). We are living about an hour south of Toluca and I see something in the hillsides here that sure looks like Tith rotu, but it comes in a much wider variety of colors. So far the seeds collected last year in about Oct. don't seem viable, but my "Torch" seeds grow well, although don't seem to like clay soils very much.

From your friends at Botanical Interests: Annual. Blooms late summer to first fall frost. 3'- 5' tall. Full sun. Unabashedly brilliant orange 3" wide daisy-like flowers on long stems. The 'Torch' flowers are as hot & fiery as the August sunshine! A genuine heat-lover, this Mexican Sunflower sets the dog days of summer ablaze with its sizzling orange daisies. A large outstanding plant for the back of the border. Plant a row of Mexican Sunflowers for a quick temporary privacy screen while waiting for a new landscape to fill in. Attracts butterflies, especially the elegant Swallow Tails. Also tolerates infertile soil, drought, and neglect. For best results, remove spent flowers and stake if necessary. Looks lovely when paired with a purple grass for contrast. Easy to grow from seed - a good choice for new gardeners and children.

I live in Tucson Arizona and this plant started growing as a volunteer. The soil where it started was the hard nasty clay with no amendments. This area does stay wet because I have a cassia in the same area that gets watered daily. As long as it received plenty of water, it grew quickly and provided several blooms.

I will be planting a lot of these in the spring.

In summer 2005, I planted it in partial shade and was not impressed. In 2006, I gave it another shot in full sun and average soil. All I can say is WOW! It's a butterfly magnet at over 6 ft tall and covered with spectacular deep orange blooms. I deadheaded spent blooms to ensure more, but I don't know what would have happened if I didn't. People walking by always stopped to look. Thrived in the hot, dry conditions. I never once watered it. Large enough to be a temporary hedge or barrier. Very fast growing

Such a nice addition to the garden. My wife took one of these to the local county fair and won first prize in the sunflower class. I agree they make nice cut flowers in general although occasionally a few of them wilt and flop over in the vase (perhaps cut too late in their bloom?). We'll grow these again.

This plant wintersowed nicely. It works well as a middle to back of the border specimen.

Mine grow great in Oregon. I started some in my cold frame years ago from seeds. I've replanted them each year ever since with seeds that I collect during the fall. Bumble bees love them. Cut the dead heads back and they will bloom prolifically from June until to the first frost. As with all plants if you keep them healthy with good soil, the right amount of fertilzer and water they resist pests and disease quite. I sometimes have to zap the aphids with a little soap or malathian when I first put them out in May, but that's it for the rest of the year.

Although it's an annual, it has a bright, eye catching orange bloom that attracts the butterflies and my eye . I love it. It's easy to grow from seed.

I grew this in northern Minnesota this summer. The Monarchs and Bumble Bees loved it! It reached a height of 4 to 5 feet. Was planted where it got a good half days sunlight. A definate for next year!

Seeds have overwintered on southwest side of house. Plant has been known to reach over 6 feet, despite my attempts to rein it in. At this height, it has also been observed to completely uproot itself after a heavy rain. I will have to try harder to keep it more balanced.

Hummers love it. It also is enjoyed by bees and butterflies.

I recently found a plant that probably escaped from someone´s garden and was thriving in the shady forest.

I recently saw this plant for the first time growing in a large patch in morning sun in Gainesville, Florida. The deep orange flowers were spectacular, on five to six foot tall plants, and some had gone to seed, so next year I will have some growing too!

In reading up on this plant I found it is really a "perennial grown as an annual," that will self sow, and that there are several smaller cultivars than the six foot tall species, for smaller gardens. Southern Living Garden Book lists 'Torch' as a bushy four footer, and 'Goldfinger' and 'Sundance' as three footers. This book says they all have hollow stems and should be cut with care for bouquets in order to avoid bending the stalks.

I have many buterflies already in my garden, but no Monarchs, which I have read only locally migrate up and down the Florida peninsula with the changing seasons, so I think I have a good chance of attracting them into my garden. I already have at least a half dozen milkweeds (Asclepias) growing, as a larval plant for Monarchs, so I really hope that with the addition of Tithonia I can finally attract these beautiful butterflies into my garden.

My neighbor across the street introduced me to this plant. She just 'ripped' 4 small ones out of the ground and I planted them. They all did wonderful and didn't die from shock. They reseed on their own, I collect seeds when the flower heads turn downward and appear dried out.

I love these because they attract so many butterflies and hummingbirds to the garden!! I plant them with my Butterfly Weed to create butterfly nirvana! Nector for the butterflies and milkweed for the caterpillars . .. They LOVE IT! I've had more Monarch's here this year than I've ever seen before! My neighbor has the same Butterfly weed that I have but no caterpillars - because they don't have the Mexican sunflower there to attract the adults to the area to begin with.

Perfect plant for full sun, average soil. Little care required - lots of blooms.

When planting - make sure you don't cover the seeds, they need light to germinate. Just sprinkle on the ground, water and wait . ..

This is my second year growing. We have had a lot of hummingbirds and butterflies, and my kids love to pick the flowers for their grandma. My friend gave me seeds while visiting in Plano, Texas (U.S.)

This is my first time growing this plant. Mine is in full sun till about 2pm. It's 5' tall with several buds ready to open. My friend Yvana gave me this plant from seeds her Aunt brought her back from a trip to Paris, France

This was my first year growing this plant, and several of my plants are at least 8 feet tall (these are in partial shade.) The plants in full sun are smaller.

This plant is a butterfly and hummingbird magnet! Will definitely grow this one again because it self-sows.

This is my first year also for tithonia. Its over eight feet tall, and blooming like crazy! The butterflies love it.

2003 was the first year I planted the mexican sunflower. I notice in this forum that the max height is 6ft - but mine is over 12 feet tall now and higher than the roof. A wonderful habitat for butterflies and a great bee attractor.

Mine are bright orange. Not blooming yet, but last year the plant had 30-50 blooms at a time, with a dozen butterflies at one time. It needs essentially no care, withstanding even high heat and humidity. I have numerous butterfly bushes, and this one takes the prize for attracting butterflies, although I've never seen a hummingbird on them.

The three-inch flowers make excellent cut flowers. Withstands heat, and flowers mid-Summer to frost.

Large impressive plant, can reach 6' tall. Has 3" red-orange flowers that are dahlia-like. Great for attracting both hummingbirds and butterflies!!