


Black Truffle Cardinal Flower
Lobelia cardinalis 'Black Truffle'
13 reviews
Black Truffle Cardinal Flower
Lobelia cardinalis 'Black Truffle'
13 reviews
- Rare black truffle variety
- Eye-catching cardinal red flowers
- Easy to grow and care for
- Recommended by landscape designers for optimal fit in real yards
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Not just beautiful - intentionally selected by ShrubHub's 3D landscape design team to fit real-world spaces and maximize yard potential.
Why Black Truffle Cardinal Flower?
The Black Truffle Cardinal Flower, or Lobelia cardinalis 'Black Truffle', is a stunning and unique variety of the traditional cardinal flower. Its deep burgundy-black foliage provides a dramatic backdrop for the bright red tubular flowers that bloom in summer. This plant is a favorite among gardeners looking to add a touch of sophistication and elegance to their landscape.
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Sunlight
The Black Truffle Cardinal Flower prefers partial shade to full sun, but can tolerate some shade. It is important to provide at least 4-6 hours of direct sunlight per day for optimal growth and flowering. Plant in a location with morning sun and afternoon

Watering
Black Truffle Cardinal Flower thrives in consistently moist to wet soil, so it requires regular watering to keep the soil consistently damp but not waterlogged. It is important to avoid allowing the soil to dry out to ensure the plant remains healthy and v

Fertilizing
Black Truffle Cardinal Flower requires a well-drained soil rich in organic matter. Fertilize with a balanced slow-release fertilizer in the spring to promote healthy growth and blooming. Avoid over-fertilization as it can lead to excessive foliage at the e
Black Truffle Cardinal Flower (Lobelia cardinalis 'Black Truffle')
The Black Truffle Cardinal Flower is a stunning perennial plant with deep purple foliage and vibrant red flowers. This variety of Lobelia cardinalis is known for its unique coloration and striking appearance in the garden.
Features:
- Deep purple foliage
- Dark red, tubular flowers
- Tolerant of wet soil conditions
- Attracts pollinators, such as butterflies and hummingbirds
- Low maintenance
Specifications:
- Botanical Name: Lobelia cardinalis 'Black Truffle'
- Plant Type: Perennial
- Sun Exposure: Full sun to part shade
- Soil Type: Moist, well-drained soil
- Growth Rate: Fast
- Mature Height: 24-36 inches
- Hardiness Zones: 4-9
Whether planted in flower beds, borders, or containers, the Black Truffle Cardinal Flower is sure to make a bold statement in any garden setting.
Plant Information:
Botanical Name: | Lobelia cardinalis 'Black Truffle' |
USDA Zones: | 5 - 8 |
Water: | Moderate/Tolerates Wet Soils |
Exposure: | Full Sun |
Soil Needs: | Well-Drained |
Mature Height: | 3 - 4 feet |
Mature Spread: | 18 - 24 inches |





Pollination Info
Pollination Info for Black Truffle Cardinal Flower (Lobelia cardinalis 'Black Truffle')
Black Truffle Cardinal Flower (Lobelia cardinalis 'Black Truffle') is a perennial plant that attracts pollinators such as hummingbirds and butterflies with its bright red flowers. These pollinators are essential for the plant's reproduction as they help transfer pollen from one flower to another.
The tubular shape of the Black Truffle Cardinal Flower's flowers makes them particularly attractive to hummingbirds, which have long, slender beaks that can easily reach the nectar deep inside. As the hummingbirds feed on the nectar, they inadvertently pick up pollen on their heads and bodies, transferring it to other flowers as they visit different plants.
Butterflies are also frequent visitors to the Black Truffle Cardinal Flower, drawn to the vibrant color and sweet scent of the flowers. As they feed on the nectar, butterflies also help pollinate the plant by carrying pollen from one flower to another on their legs and bodies.
In addition to hummingbirds and butterflies, other pollinators such as bees and moths may also visit the Black Truffle Cardinal Flower, further contributing to its reproductive success.
FAQ
Black Truffle Cardinal Flower (Lobelia cardinalis 'Black Truffle')
What is Black Truffle Cardinal Flower?
Black Truffle Cardinal Flower (Lobelia cardinalis 'Black Truffle') is a stunning perennial plant known for its deep purple to black foliage and vibrant red flowers. It is a cultivar of the native cardinal flower and is prized for its unique coloration.
How do I care for Black Truffle Cardinal Flower?
Black Truffle Cardinal Flower thrives in moist, well-drained soil and prefers partial to full sun. Keep the soil consistently moist, especially during hot summer months. Deadhead the flowers to encourage continuous blooming and cut back any damaged or wilted foliage.
When does Black Truffle Cardinal Flower bloom?
Black Truffle Cardinal Flower typically blooms in late summer to early fall, producing vibrant red flowers that attract hummingbirds and butterflies to the garden.
Is Black Truffle Cardinal Flower deer resistant?
Black Truffle Cardinal Flower is considered deer resistant, making it a great addition to gardens where deer may be a problem.
Can Black Truffle Cardinal Flower be grown in containers?
Black Truffle Cardinal Flower can be grown in containers as long as they are large enough to accommodate the plant's root system and provide proper drainage. Make sure to water regularly and fertilize periodically to maintain healthy growth.
How do I propagate Black Truffle Cardinal Flower?
Black Truffle Cardinal Flower can be propagated through division in early spring or by taking stem cuttings in late spring to early summer. Simply divide the plant or cut a 4-6 inch stem, remove the lower leaves, and plant in well-draining soil.
Planting & Care
Planting and Care for Black Truffle Cardinal Flower (Lobelia cardinalis 'Black Truffle')
Planting:
- Choose a location with partial shade to full sun and moist, well-drained soil.
- Plant the Black Truffle Cardinal Flower in the spring or fall.
- Dig a hole twice as wide and as deep as the root ball.
- Place the plant in the hole and backfill with soil, firming it gently around the plant.
- Water the plant thoroughly after planting.
Care:
- Water regularly, especially during dry periods, to keep the soil consistently moist.
- Apply a layer of mulch around the base of the plant to help retain moisture and suppress weeds.
- Feed the plant with a balanced fertilizer in the spring and mid-summer.
- Deadhead fading flowers to encourage continuous blooming.
- Monitor for pests and diseases, and treat promptly if necessary.
Additional Tips:
- Black Truffle Cardinal Flower can be divided every few years in the spring to rejuvenate the plant.
- Protect the plant from strong winds, as the tall stems can be susceptible to damage.
- Consider staking the plant for additional support if necessary.
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Customer Reviews
4.7 out of 5 based on 13 reviews
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Great quality plant, very healthy and well-packaged. Can't wait to see it bloom.
Good customer service, responsive and helpful.
Arrived in perfect condition, very pleased.
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