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flowerAnnual
Tithonia
Tithonia rotundifolia
Also known as: mexican sunflower
Tall heat-loving annual with large orange-red daisy flowers. Magnet for butterflies and hummingbirds. Thrives in poor soil.
Growing Requirements
SunFull Sun
WaterLow
Soil Type
Soil Drainage
Soil pH
Plant Spacing24–36″
Row Spacing36–48″
Planting Depth0.25–0.5″
Height48–72″
Spread24–36″
✗ Not Container Friendly✓ Raised Bed Friendly
Planting Schedule
Start Indoors
4–6 weeks before last frost
Direct Sow (Spring)
1–9 weeks after last frost
Transplant Outdoors
1–9 weeks after last frost
Germination
5–10 days
Days to Harvest
70–90 days
Zone Suitability
USDA Hardiness Zones
1
2
3
4
5
6
7
8
9
10
11
12
13
Zones 2–11
Cannot overwinter outdoors
Do not over-fertilize — rich soil produces foliage over flowers. Brittle stems — stake in windy areas. Frost sensitive.
Companion Plants
No companion data available for this plant yet.