Proven Winners® Blackberry Merlot Rose Mallow

Hibiscus 'Blackberry Merlot' PP 33,498

$59⁹⁹

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Understanding Plant Options

Nature Hills offers plants in two main formats:

Container Plants: Grown in pots with soil, sized by container volume and plant age
Bare Root Plants: Dormant plants without soil, sized by height measurements

Container Plant Sizes

Container sizes indicate plant age and growing capacity rather than liquid volume equivalents. Our containers follow industry-standard nursery "trade gallon" specifications, which differ from standard liquid gallon measurements.

Young Plants (6 months to 18 months old)

Container Size	Actual Volume	Metric Equivalent
2" x 2" x 3"	0.18 - 0.21 dry quarts	0.20 - 0.23 dry liters
4" Container	0.31 - 0.87 dry quarts	0.35 - 0.96 dry liters
4.5" Container	0.65 dry quarts	0.72 dry liters
6" Container	1.4 dry quarts	1.59 dry liters
1 Quart	1 dry quart	1.1 dry liters
5.5" Container	1.89 dry quarts	2.08 dry liters

Established Plants (18 months to 2.5 years old)

Container Size	Actual Volume	Metric Equivalent
2 Quart	2 dry quarts	2.2 dry liters
#1 Container	2.26 - 3.73 dry quarts	2.49 - 4.11 dry liters
5" x 5" x 12"	3.5 - 4.3 dry quarts	3.85 - 4.74 dry liters

Mature Plants (2-4 years old)

Container Size	Actual Volume	Metric Equivalent
#2 Container	1.19 - 1.76 dry gallons	5.24 - 7.75 dry liters
#3 Container	2.15 - 2.76 dry gallons	8.14 - 12.16 dry liters

Large Plants (3-5 years old)

Container Size	Actual Volume	Metric Equivalent
#5 Container	2.92 - 4.62 dry gallons	12.86 - 20.35 dry liters
#6 Container	5.25 - 6.01 dry gallons	23.12 - 26.42 dry liters
#7 Container	5.98 - 6.53 dry gallons	26.34 - 28.76 dry liters

Bare Root Plants

Bare root plants are sold by height from the root system to the top of the plant. Plants may exceed minimum height requirements.

Common Sizes:

Trees: 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet
Shrubs & Perennials: 1 foot, 18 inches, 2 feet

Important Notes

Container Volume Specifications

Trade Gallon Standard: Our containers follow industry-standard "trade gallon" specifications established by the American National Standards Institute (ANSI Z60.1) for nursery stock
Volume Variations: Actual soil volume may vary due to plant root systems and growing medium settlement
Age Indicators: Container size primarily indicates plant age and maturity rather than liquid volume equivalents

Growing Conditions

Plant size can vary based on variety and growing conditions
Container size helps indicate plant maturity and establishment level
Larger containers generally mean more established root systems and faster landscape establishment

Seasonal Availability

Bare root plants are available seasonally when dormant
Container plants are available throughout the growing season
Specific varieties may have limited availability in certain sizes

Questions?

For questions about specific plant sizes or availability, please contact our plant experts who can help you choose the right size for your landscape needs.

Plant Highlights

Proven Winners® Blackberry Merlot Rose Mallow highlights at a glance!

Specifications

Brand

Plants That Work
Botanical Name

Hibiscus 'Blackberry Merlot' PP 33,498
Growing Zones

4 - 9
Mature Height

4 - 5 Feet
Mature Spread

3 - 4 Feet
Sun Exposure

Full Sun
Moisture

High
Soil

Tolerates Wet Soil
Growth Rate

Fast
Flower Color

Red
Pollinator Friendly

Yes
Pruning Time

Early Spring
Bloom Period

Summer, Fall

Growing Zones

Find Your Growing Zone!

The Proven Winners® Blackberry Merlot Hardy Hibiscus PP#33,498 (Hibiscus 'Blackberry Merlot') is an extraordinary perennial Hibiscus with enormous, velvety, deep wine-purple blooms that bring a touch of tropical drama to sunny gardens. This hardy hibiscus blooms from mid to late summer and often reblooms into early fall for a show that stretches the season. Its bold flowers are not fragrant, but their rich color is unforgettable, set against lush, medium-green, heart-shaped foliage.

Its thick, tuberous roots store energy through winter, allowing a spectacular return each year. Upright, sturdy stems easily support the weight of the plate-sized flowers, which can reach up to 8 inches across, while the dense foliage keeps the plant looking full from base to tip. Growing to about 4-5 feet tall and wide, this Hibiscus has a tidy, rounded shape that works beautifully in smaller gardens or as a summer focal point.

Native to North American wetlands, Hibiscus moscheutos (also known as Rose Malllow) has been cherished for centuries for its showy flowers and adaptability. While Tropical Hibiscus steals the limelight in warm zones, this cold-hardy cousin thrives in USDA zones 4 to 9. It loves warm, sunny conditions and flourishes in the Midwest, South, and coastal states where summers are long and hot!

>>Jump to Planting & Care Instructions

Key Features

Proven Winners® selection with massive wine-purple blooms
Blooms mid to late summer and often reblooms into fall
Upright, compact growth habit, around 4 feet tall and wide
Attracts hummingbirds and pollinators
Cold-hardy to zone 4 and deer-resistant

Landscaping Uses

Compact yet striking, it is a standout performer in perennial borders, cottage gardens, and pollinator havens. With its tropical flair and compact size, Proven Winners® Blackberry Merlot Rose Mallow steals the show in any sunny setting.

Specimen plant in mixed perennial border
Cottage gardens centerpiece
Poolside or patio focal point
Paired with ornamental grasses for contrast
Stunning in wildlife or pollinator gardens
Works in mixed shrub plantings
Great for Rain Gardens

Care & Maintenance

An herbaceous perennial that loves sun, fertile soil, and consistent moisture for the best performance. Read more on caring for Hibiscus here.

Planting Time: Spring after frost danger has passed
Sun Requirements: Full sun for maximum blooms
Soil Requirements: Fertile, well-drained, tolerates clay and moist conditions
Moisture Needs: Keep evenly moist; use the Finger Test to check soil moisture
Arborist Mulch: Apply a 3-4 inch layer of arborist mulch to retain moisture and regulate temperature
Fertilization Needs: Apply balanced, slow-release fertilizer in spring; add compost in summer for lush blooms
Pruning Info: Cut stems back to 4-6 inches after frost kills top growth; blooms on new wood each year
Division Info: Divide every 3-4 years in spring if needed
Special Perks/Growing Needs:

Deer-resistant
Cold-hardy and heat-tolerant
Great for wet soil

A Toast to Garden Luxury

The Proven Winners® Blackberry Merlot Rose Mallow delivers rich, wine-colored blooms that command attention. With its lush foliage, oversized flowers, and easy care, it is a perennial worth raising a glass to. Order your Proven Winners® Blackberry Merlot Rose Mallow and enjoy the season’s most luxurious blooms from naturehills.com!

Frequently Asked Questions

What colors do Proven Winners® Blackberry Merlot Rose Mallow flowers come in?

They are deep, velvety wine-purple with darker veining.

How tall and wide does Proven Winners® Blackberry Merlot Rose Mallow grow?

It matures to about 4 feet tall and wide.

Is Proven Winners® Blackberry Merlot Rose Mallow deer resistant?

Yes, it is generally deer-resistant.

When does Proven Winners® Blackberry Merlot Rose Mallow bloom?

It blooms from mid to late summer and often reblooms into fall.

Can Proven Winners® Blackberry Merlot Rose Mallow grow in wet soil?

Yes, it tolerates moist to wet soils and thrives in consistently damp areas.

Why Order From Nature Hills Nursery?

Nature Hills Nursery is committed to bringing the highest-quality plants to your door. Join thousands of happy customers and get all your planting needs at Nature Hills! We guarantee our plants for their first year! Check out lifelong support and landscaping ideas in our #ProPlantTips Garden Blog!