Black Truffle Cardinal Flower

As low as $49.59 was $79.99
Availability: In stock

Valuable Wetland Color Black Truffle Cardinal Flower

  • Eye-Catching Color
  • Nearly Black Foliage and Bold Red Flowers
  • Enjoy Flowers for Months
  • Attract Butterflies
  • Hummingbirds Adore This Plant
  • Tolerates Wet Soils
  • Performs in Full Sun or Partial Shade

This easy-care perennial is a "Power Player" in your moist soil landscape. It's one of the most colorful cultivars of our native wildflowers!

Starting in early summer, Black Truffle Cardinal Flower (Lobelia cardinalis 'Black Truffle') features tall spires of scarlet red, trumpet-shaped blooms. The showy display lasts for months, all the way through to the first frost.

Best of all? This beautiful perennial plant grows beautifully in clay soils that stay wet. Add to those low-lying areas of your yard, or at the water's edge.

More prosaically, this is a safe choice for use near septic tank drain fields. Might as well turn that area into a garden asset, right?

In the wild, Cardinal Plants grow in ravines, swamps and low-lying pastures. They decorate stream banks and entice local butterflies and hummingbirds with their tubular-shaped, bright red flowers.

Hummingbirds love the color red, and this plant sends a siren's call to them. If you love birds, you'll want to use this variety in your garden design.

Count on the dramatic black foliage to add deep, dark visual interest! Use several to amplify the effect!

How many hummingbirds will you feed this year?

Order these gorgeous Lobelias from Nature Hills. You'll love the positive impact that Black Truffle Cardinal Flower has on your garden design.

How to Use Black Truffle Cardinal Flower in the Landscape

No matter if you have a large pond on your property, or just a spot that stays wet near the gutter downspout, Black Truffle easily creates interest.

The brilliant red flowers and lushly dark foliage adds dimension and texture to a water feature. Plant them at the edge of a stream where you'll enjoy the reflected blooms in the water.

Create a useful Rain Garden to help filter runoff from roofs and streets. People are looking to use their landscape in a way to solve ecological challenges. Add color to soil retention and shoreline reclamation projects.

These can also be grown in a perennial border with adequate supplemental water. Partner with Henry's Garnet or Scentlandia Sweetspire, and pump up the impact with a Choco Latte Hardy Hibiscus.

They can be very effective in long, narrow drifts behind lighter colored wetland plants like Evergold Sedge. Try them in front of taller Swamp Milkweed.

Use several to make a showy display. Space them 12 inches apart, measuring from the center of one to the center of the next.

You'll feel so good about your choice as you watch butterflies and hummingbirds enjoy the nectar. Tuck them into "out-of-the-way" spots, and add a comfy chair or hammock. Bring your camera and track how many flying visitors you get!

#ProPlantTips for Care

Black Truffle Cardinal Flower grows in both full sun or partial shade. It will need at least four hours of sunlight a day.

This plant requires a high amount of moisture for best performance. Add a three-inch layer of mulch over the top of the root zones in average garden soil. Give it supplemental water in times of drought.

We recommend that you allow the dried foliage to stand over winter for protection. Wait until early spring to do light cleanup and trimming of spent leaves.

You'll love the majesty of these grand, upright perennials. Use them with pride in your landscape this season. Order Black Truffle Cardinal Flower today!

Buying Options for Plants

Nature Hills sells a large variety of plants with several options available. Plants are offered in both potted containers and as dormant bare root without soil. Here is a helpful resource to understand your options as you create a beautiful landscape with help from Nature Hills.

Ever wonder what a larger plant will mean for your landscape? Container Sizes are really all about the age of the plant!

Seasonally, Nature Hills offers hand selected, high quality bare root trees, shrubs and perennials. Bare root plants are sold by height from the top of the root system to the top of the plant. Plants may be taller than the height minimums.

  • Popular sizes of select trees are 1 foot, 2 feet, 3 feet, etc.
  • Popular sizes of select bare root plants is 1 foot, 18 inches, etc.

Nature Hills Container Size by Volume

Keep in mind, specific varieties and different growing conditions can affect the rate at which plants grow. Variations in size may occur.

Young Plants to 18 Months
Size Volume
2"x2"x3" Ranges from .18 to .21 dry quarts / .198 to .23 dry liters in volume
4.5" Container Equal to .65 dry quart / .72 dry liter in volume
Sprinter Pot Equal to .63 dry quart / .69 dry liter in volume
4" Container Ranges from .31 to .87 / .35 to .96 dry liter in volume
6" Container Equal to 1.4 dry quarts / 1.59 dry liters in volume
1 Quart Equal to 1 dry quart / 1.1 dry liter in volume
5.5" Container Equal to 1.89 of a dry quart / 2.08 dry liters in volume
4"x4"x5" Ranges from .8 to 1.1 dry quarts / .88 to 1.2 dry liters in volume
4"x4"x6" Ranges from 1.0 to 1.3 dry quarts / 1.1 to 1.41 dry liters in volume
4"x4"x9" Ranges from 1.1 to 2.1 dry quarts / 1.2 to 2.3 dry liters in volume
4"x4"x10" Ranges from 1.7 to 2.3 dry quart / 1.87 to 2.53 dry liters in volume
Plants 18 Months - 2.5 Years Old
Size Volume
2 Quart Equal to 2 dry quarts / 2.2 dry liters in volume
#1 Container Ranges from 2.26 to 3.73 dry quarts / 2.49 to 4.11 dry liters in volume
5"x5"x12" Equal to 3.5 to 4.3 dry quarts / 3.85 to 4.74 dry liters in volume
Plants 2 - 4 Years Old
Size Volume
#2 Container Ranges from 1.19 to 1.76 dry gallons / 5.24 to 7.75 dry liters in volume
#3 Container Ranges from 2.32 to 2.76 dry gallons / 10.22 to 12.16 dry liters in volume
Plants 3 - 5 Years Old
Size Volume
#5 Container Ranges from 2.92 to 4.62 dry gallons / 12.86 to 20.35 dry liters in volume
#6 Container Ranges from 5.25 to 6.01 dry gallons / 23.12 to 26.42 dry liters in volume
#7 Container Ranges from 5.98 to 6.08 dry gallons / 26.34 to 26.78 dry liters in volume

About Plant Sentry™

Plant Sentry is designed to protect both consumers and the nursery trade from invasive plant pests and diseases. Sites that display the Plant Sentry protection badge are protected from consumers buying and nurseries shipping material carrying invasive pests and diseases.

This proprietary eCommerce software prevents the shipment of a restricted plant to each state. The Plant Sentry system includes a shipment certification program. The Plant Sentry Compliance Officer works closely with and each nursery or fulfillment center to ensure only compliant plants are sold to customers.

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Plant Sentry


To obtain a more accurate shipment time-frame, simply enter your zip code in the “Find Your Growing Zone” box to the right. Our plants are grown all over the country and lead time on items may be different because of this. Once your order is placed, you will also receive the specific shipment time-frame information as part of your order confirmation. Once an item ships, you will receive shipment notification and tracking numbers, so you can follow along while your plant travels to your doorstep. We use FedEx, UPS, or USPS at our discretion.

Due to winter weather we have put a hold on shipping to the areas shown below in grey. You can still order now and we will ship the plant to you during an appropriate time for your zone.

*If you have found your zone already, it will be highlighted in the table below.
Color Zone Times
3 Spring 2019
4 Now
5 Now
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Shipping Rates

At Nature Hills we handle, package and ship the products you order with the utmost care to ensure healthy delivery. Shipping and handling charges are calculated based on the tables below. Please note that some items include an additional handling surcharge, these will be noted on the item's product page.

From To S&H
0 - 19.99 24.99
20 - 49.99 29.99
50 - 69.99 34.99
70 - 99.99 39.99
100 - 129.99 44.99
130 - 149.99 48.99
150 - 150+ Approx 28%

Click here to see our full rates


Black Truffle Cardinal Flower Is Suited to Grow in Zones 5-8
Growing Zones 5-8
More Information
Brand Nature Hills' Choice
Botanical Name Lobeliacardinalis 'Black Truffle'
Mature Height 3 - 4 feet
Mature Spread 18 - 24 inches
Sun Exposure Full Sun
Soil Tolerates Wet Soils
Moisture High
Growth Rate Medium
Foliage Color Black
Fall Color Burgundy / Purple
Pollinator Friendly Yes
Pruning Time Early Spring
Fragrant No