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Tithonia rotundifolia

 
Tithonia rotundifolia
Mexican sunflower

Common name Mexican sunflower
Family asteraceae
Life cycle annual
Flowers orange
Size 4 ft
Light sun
Cultural notes ordinary garden soil
From seed Germinate at warm temperature (75F)
detailed seed-starting info below
Seed ripenslate September

Covered in orange daisies mid-summer through fall. One of our favorite large annuals. The first year we grew it was the year Amy and I got married in our back yard, in September. Our guests walked through the side garden (which was new at the time) to the back yard. I scrupulously dead-headed all flowers that summer, hoping for lots of blooms on the big day. And the one I tended to most was the tithonia, which attained a majestic stature and was full of flowers the whole summer. It didn't disappoint us on the day of the wedding!
It's a favorite of insect life, too, as you can see in the closeup photo.

In our garden, this plant grows in the following area: houston back yard

One or more images of this plant are included in my stock photo catalog

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PlantLinks to other web pages about Tithonia rotundifolia


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Seed-starting details for this plant

  1. Seed from '00 garden. Baggy 70F (62%G)
  2. Seed from '00 garden. Baggy 75F (93%G, 2d)
  3. Seed from '02 garden. Baggy 75F (60%G, 2-5d)
  4. Seed from '03 garden. Baggy 75F (94%G, 3d)
  5. Same seed as above. Baggy 75F (90%G, 2-5d)
  6. Seed from '07 garden. Baggy 75F (75%G, 3d)
  7. Seed from '06 garden. Baggy 75F (77%G, 3-5d)
  8. Seed from '09 garden. Baggy 75F (100%G, 3d)
  9. Seed from '10 garden. Baggy 75F (50%G, 2-4d)
  10. Seed from '11 garden. Baggy 75F (86%G, 3-5d)
  11. Seed from '11 garden. Baggy 75F (100%G, 2-4d)
  12. Seed from '09/'10 garden. Baggy 75F (some G, not as strong as usual: seed is too old)

Quick to germinate, but also quick to deteriorate in baggy - needs to be potted up within a day or two after sprouting.


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Last modified: March 24, 2013
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