General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 10b
Plant Height: 4-4.5 feet
Plant Spread: 4-5 feet
Leaves: Unusual foliage color
Deciduous
Other: Blackish
Flowers: Showy
Flower Color: Red
Other: Deep red
Bloom Size: 6"-12"
Flower Time: Summer
Late summer or early fall
Fall
Other: Deadheading flowers ensures more flowering throughout the season.
Wildlife Attractant: Bees
Butterflies
Hummingbirds
Resistances: Deer Resistant
Propagation: Seeds: Suitable for wintersowing
Sow in situ
Start indoors
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Cuttings: Cane
Division
Pollinators: Various insects
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots
Miscellaneous: Tolerates poor soil
Patent/Plant Breeders' Rights: PP#31478; CPBRAF
Parentage: proprietary hybrid known as 12-166-5 x Perfect Storm

Image
Trade name information:
Series: Summerific™
Trade Name: Holy Grail
Cultivar name: 'Holy Grail'

Photo Gallery
Photo by clintbrown
Location: Medina, TN
Date: 2018-10-10
Dark foliage and red flowers make a great combination.
Location: Medina, TN
Date: 2018-10-10
The dark foliage is an added bonus.
Location: West Central Tx 
Date: 2023-05-17
Location: Zone 6b. 
Date: 2022-08-09
Location: My Garden
Date: 2022-06-27
Location: Longwood Gardens, Kennet Square, Pennsylvania USA
Date: 2019-10-04

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