Botanical Name: Hibiscus x ‘Holy Grail’
Great for Beginners 🧡 Part Sun to Sun 🧡 Blooms Summer – Fall
So, we’re comfortable saying that most every tropical flowering plant you introduce to your garden is going to be beautiful. The bold colors, the tropical vibe… Fantastic, right? But then there are those bloomers that are truly incredible.
The Summerific® “Holy Grail” Rose Mallow, a hibiscus hybrid, is one of them. It’s ah-mazing! If you want to create a special focal point in your garden with one plant, or accent an area with these thrillers en masse, this rose mallow is more than a terrific choice.
Three Reasons Why You’ll Love Summerific® “Holy Grail” Rose Mallow
Showstopper Blooms
First, the incredibly large flowers are stunning not only because of their size, but also because of their rich, deep-red color. They will command attention!
The Leaves Are Just as Stunning
The blooms of the “Holy Grail” Rose Mallow are almost upstaged by the dark purple, near-black foliage that frame those blooms, and—whoa!—will stop you in your tracks.
If you’re looking for a unique “goth garden” look, this is truly a must-have!
Hummers and Buzzers
Humans aren’t the only ones attracted to this beauty. You’ll see hummingbirds and pollinating bees taking their fill of these dinner-plate blooms.
Summerific® “Holy Grail” Rose Mallow Plant-a-Glance™ Details
Care Level: Easy
Type: Perennial
Hardiness Zones: 4-9
Native Area: North America
Uses: Border Plant, Landscape, Focal Point
Best to Plant: Spring | Summer
Light: Part Sun to Sun
Water: Medium to High
Soil: Chalk, Clay, Loam, Sand, Well-Draining
Bloom Colors: Deep Red
Bloom Time: Mid Summer to Early Fall
Foliage: Near Black
Seasonal Interest: Summer, Fall
Mature Size: 48”-54” tall x 54”-60” wide
Habitat: Upright
Attracts: Hummingbirds, Bees
Resists: Deer
Insects/Disease: Japanese Beetles
Toxicity: Non-toxic
A Beginner’s Guide to Caring for Perennial Hibiscus
Light and Location
All this Proven Winner® hibiscus needs is a partly sunny or sunny spot. That means it needs at least four hours of sunshine.
Soil
It likes to be in moist, well-draining soil, and if that soil is on the acidic side, all the better. In fact, if you have a soggy, boggy area of your garden, the “Holy Grail” Rose Mallow would love to move in.
Watering
Keeping these plants watered will keep them happy, resulting in larger flowers and lush foliage. And isn’t that the whole point of these glorious garden glamour girls?
Pruning and Grooming
It’s a good idea to trim back any stems in the spring before new growth appears. (Don’t trim back in the fall!) And while this perennial hibiscus is one of the last perennials to emerge in the spring, it’s also one of the fastest growers. You’ll have a lusciously full plant before you know it!
Reston Farm Garden Market is proud to be a Proven Winners Certified Garden Center! We offer a huge selection of the Proven Winners annuals and perennials you’re searching for. Our trained and knowlegeable staff is here to help answer any questions you have, and to help your garden grow!
