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Proven Winners Perennials

Hibiscus SUMMERIFIC® 'Holy Grail'

$1614 $1899
Shipping calculated at checkout.
  • Pot Size: 1 Gallon Pot
  • Common Name: Rose Mallow
  • Exposure: Full Sun to Partial Sun
  • Hardiness Zone: 4-9
  • Bloom Color: Red
  • Bloom Time: Summer
  • Garden Height: 4-5 Feet
  • Garden Spread: 4-5 Feet

This is a standout performer in the garden! 'Holy Grail' adds a wonderful richness to the garden with its almost black, oval shaped foliage. The incredibly large flowers are 8" - 9" across and deep red in color. These blossoms give way to bright green calyxes that contrast the dark folaige nicely. U.S. native hybrid.

Uses: Bogs, Borders, Cottage Gardens, Landscapes, Naturalizing, Rain Gardens, Specimen
Nature Attraction: Bees, Butterflies
Critter Resistant: Deer
Notable Features: Large Flowers, Rapid Growth, Heat Tolerant, Native
Growth Habit: Upright, Bushy

Photo courtesy of Proven Winners - www.provenwinners.com

Homeowner Growing Tips

Plant in moist, well-drained soil in full sun. Keeping the plants well-watered will result in larger flowers and lush foliage. Deadhead to improve the appearance of the plant. Mulch for protection in winter. Cut back remaining stems to 3" - 4" in spring before new growth emerges. Hibiscus emerges late in spring, so don't be alarmed if you don't see it right away. It will grow quickly and soon make up for its late start. Apply a balanced fertilizer after growth begins. Watch for Japanese beetles that like to eat this plant.

Delivery and Shipping

Our current processing time is 1-3 business days. See map at the bottom of the product page for transit time once shipped.

We guarantee our plants to arrive in acceptable condition. If there are any issues upon delivery, please email support@romencegardens.com within 48 hours and we will resolve the issue.

Due to ongoing maintenance, some plants may have recently been pruned back.

This does not affect their health.

Customer Reviews

Based on 4 reviews
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z
zintis muiznieks
It it quite terrific!

Planted for a client in Maplewood NJ, she's loving it!

L
Lauri P
Successful first Season

These arrive not in the best condition. The shipper left the box upside down and the plants pretty much arrived as loose dirt and broken limbs. I transferred them to pots and they quickly rebound. When I say quick, I mean just that. In a matter of days these beauties doubled in size with new growth. Within a month there were buds which blossomed into the most beautiful flowers. I even dried a few and made pitchers of Hibiscus Tea. I can’t say enough how pleased I was with this purchase and I will buy again.

p
plasko20
Wow. HUGE flowers

Saw online and was desperate to buy. As this was new for 2019 absolutely everywhere was sold out. I scoured the internet until I found this vendor. Placed my order and it arrived soon after. Very happy. It leafed out later than other plants as expected, nice dark leaves. Then the showy red flowers bloomed. Not for as long as I would have hoped, maybe 2-3 weeks. But I am addicted. One thing I do not understand though is that we have to trim to 6 inches every year, so how can it ever get to the 4ft wide advertised? I only had 1 stalk on my plant. My next will be the Summer Carnival with variegated leaves.

12

Estimated Time In Transit

This map shows the estimated amount of time that your order will spend in transit on its way to you after it leaves our facility. Transit time does not include shipping day.

Still Have Questions?
Hibiscus SUMMERIFIC® 'Holy Grail'
Proven Winners Perennials

Hibiscus SUMMERIFIC® 'Holy Grail'

$1614 $1899
  • Pot Size: 1 Gallon Pot
  • Common Name: Rose Mallow
  • Exposure: Full Sun to Partial Sun
  • Hardiness Zone: 4-9
  • Bloom Color: Red
  • Bloom Time: Summer
  • Garden Height: 4-5 Feet
  • Garden Spread: 4-5 Feet

This is a standout performer in the garden! 'Holy Grail' adds a wonderful richness to the garden with its almost black, oval shaped foliage. The incredibly large flowers are 8" - 9" across and deep red in color. These blossoms give way to bright green calyxes that contrast the dark folaige nicely. U.S. native hybrid.

Uses: Bogs, Borders, Cottage Gardens, Landscapes, Naturalizing, Rain Gardens, Specimen
Nature Attraction: Bees, Butterflies
Critter Resistant: Deer
Notable Features: Large Flowers, Rapid Growth, Heat Tolerant, Native
Growth Habit: Upright, Bushy

Photo courtesy of Proven Winners - www.provenwinners.com
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