| Description | Atomic Red Trumpet Vine (Campsis radicans) is a cultivar with red to deep red flowers on a fast-growing vine. |
|---|---|
| Pronunciation | (KAMP-sis)(rad-i-cans) |
| Plant Type | Vines, Site author's observations |
| Hardiness Zone | 4-9 |
| Sunlight | full, mostly sunny, some shade |
| Moisture | average |
| Soil & Site | average |
| Flowers | The 5-petaled corolla is red, tubular, and ends in five rounded lobes. They occur in inflorescences such as cymes or panicles, |
| Fruit | long bean-like fruit (capsule) |
| Leaves | compound, green, pinnate compound, deciduous |
| Stems | twinning stems |
| Dimensions | 20 by 20 plus feet (HS) |
| Maintenance | keeping to size, removal of suckering stems, will need a strong supporting structure |
| Propagation | digging root suckers |
| Native Site | Eastern United States |
| Misc Facts | Campsis from the Greek "kampe" something bent. Referring to the curved stamens of the flowers. "radicans refers to rooting stems. |
| Author's Notes | I just started growing this plant in the summer of 2014. By the end of 2015, it had one stem over 8 feet tall with another dozen or so shorter branches. It was already starting to sucker from the base. When the stems get long, I wind them around the large trellis (8 feet tall by 12 feet wide) a turn or two. In the summer of 2018, only a few flowers appeared. I am starting to wonder if this plant doesn't like the spot where I planted it. It should be more robust by now. Now (2025), it has lived up to its reputation for being very aggressive. Suckers are showing up all around the plant. |
| Notes & Reference | #62-Manual of Climbers and Wall Plants (J K Burras, Mark Griffiths), #150- Armitage's Vines and Climbers (Alan Armitage) |
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