Tithonias, commonly known as Mexican sunflowers, are cherished for their vibrant blooms and ability to attract pollinators. While Tithonia rotundifolia is the most widely known species, several varieties and cultivars offer different colors, sizes, and bloom times to suit various garden needs. Here are some of the best Tithonia varieties to consider:
1. Tithonia rotundifolia ‘Torch’
Description
- Height: 4-6 feet
- Bloom Color: Bright orange
- Bloom Time: Mid-summer to frost
‘Torch’ is the quintessential Tithonia variety, renowned for its tall stature and large, daisy-like orange flowers. It’s a favorite among gardeners for its striking color and prolific blooming.
Best For
- Attracting butterflies and hummingbirds
- Creating a bold, vertical statement in the garden
- Cut flower arrangements
2. Tithonia rotundifolia ‘Goldfinger’
Description
- Height: 3-4 feet
- Bloom Color: Deep orange
- Bloom Time: Mid-summer to frost
‘Goldfinger’ is a slightly shorter variety, making it suitable for smaller gardens or as a mid-border plant. Its deep orange blooms are slightly smaller but equally vibrant.
Best For
- Compact gardens or containers
- Mixed borders
- Butterfly gardens
3. Tithonia rotundifolia ‘Fiesta del Sol’
Description
- Height: 2-3 feet
- Bloom Color: Orange
- Bloom Time: Mid-summer to frost
‘Fiesta del Sol’ is a dwarf variety that offers the same bright orange blooms as taller varieties but on a more manageable, compact plant. This variety is ideal for gardeners with limited space.
Best For
- Small gardens and container planting
- Front of borders
- Urban gardens
4. Tithonia diversifolia
Description
- Height: 8-10 feet
- Bloom Color: Yellow
- Bloom Time: Fall
Tithonia diversifolia, also known as the tree marigold, is a perennial in warmer climates and can reach impressive heights. It features large, bright yellow flowers and lush foliage.
Best For
- Hedges or living fences
- Large landscape projects
- Providing late-season color
5. Tithonia ‘Red Torch’
Description
- Height: 4-6 feet
- Bloom Color: Bright red
- Bloom Time: Mid-summer to frost
‘Red Torch’ is a striking variety with vibrant red flowers that stand out in any garden. It maintains the tall, robust nature of the classic ‘Torch’ but with a unique color twist.
Best For
- Adding bold color contrasts
- Attracting a wide range of pollinators
- Creating focal points in the garden
Growing Tips for Tithonias
Regardless of the variety you choose, here are some general tips for growing healthy and beautiful Tithonias:
- Sunlight: Ensure they receive full sun, at least 6-8 hours a day.
- Soil: Plant in well-draining soil. While Tithonias are not fussy about soil type, moderately fertile soil will promote the best growth.
- Water: Water young plants regularly until they are established. Once mature, they are fairly drought-tolerant.
- Spacing: Provide adequate spacing (2-3 feet apart) to ensure good air circulation and prevent fungal diseases.
- Staking: Taller varieties may need staking to prevent them from toppling over, especially in windy conditions.
By selecting the right variety and providing optimal growing conditions, you can enjoy a garden filled with the vibrant colors and lively pollinators that Tithonias attract. Happy gardening!
