Clematis 'Ernest Markham' is a vigorous deciduous climber known for its large velvety magenta red flowers with golden stamens that bloom from midsummer into early fall. It thrives when its roots are kept cool and shaded while its vines reach into full sun. This cultivar is a Group 3 type, which means it flowers on new growth and benefits from hard pruning in late winter.
Height & Spread: 8 - 12 ft x 3 - 6 ft
Bloom Time: Midsummer to early fall
Light Requirements: Full sun to part shade (shade roots, sun top)
Soil Preference: Moist, well drained, rich in organic matter
Watering Needs: Moderate; mulch base to retain moisture and keep roots cool
Deer Resistance: Moderately deer resistant when mature
Native Status
This clematis variety originates from cultivated hybrids of European and Asian species. It is not native to North America.
WILDLIFE & INSECTS
Bees
- Visited by bumblebees and leafcutter bees for pollen when blooms are fully open.
Butterflies
- Butterflies such as Red Admirals and Painted Ladies are attracted to the large flat flower faces as landing platforms for nectar.
Beneficial Insects
- Attracts parasitic wasps and hoverflies which utilize nectar during bloom periods.
Spacing & Landscape Use
Spacing Recommendations:
- Allow 3 - 6 ft horizontal spacing at base for root zone establishment and airflow.
Landscape Placement:
- Ideal for trellises, mailboxes, arbors, and climbing garden structures where vibrant vertical color is desired in late season.
Companion Plants
- Hydrangea arborescens 'Annabelle' - Large white blooms and shady foliage complement clematis while shading its roots.
- Calycanthus floridus (Carolina Allspice) - Offers fragrant maroon blooms and structure for clematis to weave through.
- Nepeta faassenii 'Walker's Low' - Aromatic blue flowering groundcover cools soil while softening vertical clematis growth.
- Heuchera 'Obsidian' - Deep purple foliage provides contrast and ground shading for clematis roots.
- Rosa 'New Dawn' - Pale pink climbing rose intertwines with 'Ernest Markham' for a romantic color combination and extended bloom period.