| Common Name | Perennial Tickseed |
|---|---|
| Family | Asteraceae |
| Genus | Coreopsis |
| species | hybrid |
| Plant Type | Perennial |
| US Patent # | PP25404 |
| EU Grant # | EU41042 |
| Bloom Time | June, July, August, September, October |
| Flower Color | Yellow |
| Foliage Color | Green |
| Dormancy | Winter |
| Exposure | Full Sun |
| Growth Habit | Mounding |
| Growth Rate | Fast |
| Hardiness Zone | 5, 6, 7, 8, 9, 10 |
| How Different? | Compared to Coreopsis verticillata 'Zagreb', 'Imperial Sun' has larger inflorescences and a shorter habit. |
| Landscape Value | Use in mixed beds and borders, as a mass planting, an accent, or in a container. |
| Most Active Growing Season | Spring |
| Persistence | Deciduous |
| Size (HT/W/FL HT) | 18" / 22" / 20" |
| Soil (Garden) | Average, well-drained. |
| Water (Garden) | Average water needs in the garden. |
| Special Uses | Deep South, Pollinator Attractor |
| Comments | -- |
Coreopsis ‘Imperial Sun’
Amazingly bright, sunny gold flowers cover this plant in masses and waves of continuous color. Clean, deep green foliage is the perfect foil for the flowers… when the foliage is visible. Blessed with a perfect habit, this extra hardy garden marvel is very much at home in a container or a long lived garden feature. Coreopsis verticillata breeding makes this mildew resistant selection ultra-hardy.
USDA Hardiness Zone(s): 5-10
Size (HT/W/FL HT): 18″ / 22″ / 20″
Exposure: Full Sun
Bloom Time(s): June, July, August, September, October
| Water (Greenhouse) | Dry moderately between waterings. |
| EC | 0.75 – 1.0 |
| pH | 5.8 – 6.8 |
| Fertility Needs | 50 – 100 ppm |
| Notes | Grow with 55 – 60° F nights and 60 – 70° F days. Pinch at transplanting. Obligate Long Day plant. Provide night interruption or day-length extension to force flowering under natural short days. Supplemental lighting during cloudy days has proven beneficial for flower production. For highest quality, bring in liners in fall to bulk for early spring sales. |
| Finish Time to 4″ | 4 – 6 weeks |
| Finish Time to Gallon | 6 – 8 weeks |
| Day Length for Flowering | Long Day |
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Related Articles Featuring: Coreopsis ‘Imperial Sun’
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- June, 2013 – Lawn & Garden Retailer – click here
- December, 2012 – Greenhouse Grower – click here
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