Dark green and deep purple foliage of Wellspring Gardens’ Black Truffle (Cardinal Flower) - Lobelia cardinalis grows densely in soil, white perlite specks and black plastic trays visible below; this plant attracts hummingbirds.

Black Truffle (Cardinal Flower) - Lobelia cardinalis

$12.99
Sale price  $12.99 Regular price 
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Dark green and deep purple foliage of Wellspring Gardens’ Black Truffle (Cardinal Flower) - Lobelia cardinalis grows densely in soil, white perlite specks and black plastic trays visible below; this plant attracts hummingbirds.
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Black Truffle (Cardinal Flower) - Lobelia cardinalis

Wellspring Classic Series

$12.99
Sale price  $12.99 Regular price 

Hummingbirds find Black Truffle (Lobelia cardinalis) highly attractive. Its foliage is a stunning deep purple to black, yet the leaves are green at the same time! This Lobelia looks great in any garden, but it looks especially great surrounded by lime green foliage.

  • Average mature height: Low-growing (up to 48 inches)
  • Light: Full to part sun
  • Water: Average watering needs. Do not overwater.
  • Zones: 5-8
A simple black paw print icon with four toes and a pad, displayed on a white background.

Pet Friendly? No

A simple black map pin or location marker icon with a hollow circle in the center, set against a white background.

USDA Grow Zones 5-8

Silhouette icon of a watering can with a handle and a spout pointing to the left, used for watering plants.

Water Req's Medium

A black sun icon with eight triangular rays extending outward from a solid circle, on a white background.

Light Req's Full-Part Sun

Four potted plants in increasing sizes are labeled: Promo (2-4 tall), Classic (3-8 tall), Premium (8-15 tall), and Supreme (8-25 tall), showing plant and pot dimensions for each size.

Introducing Premium & Supreme plants

We're expanding our product lineup with plants that need more space than our classic 2/3-cup pot allows.

Premium Plants come in a 3/4-quart pot and Supreme Plants come in a 3/4-gallon pot.

New Premium & Supreme Plants will release each Friday.

Shop with confidence

Your plants are packed with the utmost care, but shipping can be stressful on the little guys.

That's why you have 30 days from the arrival date to experiment with them. If they don't bounce back, you're eligible for a refund.

Tell me more

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Two potted plants are shown side by side; the left plant is 3 inches tall with darker leaves, and the right plant is 8 inches tall with a large green leaf. Both pots have a green logo on the front.

We sell baby plants

Wellspring Gardens is the starter plant, AKA “baby plant” shop. We just get you started, so you get all the credit for raising your plants under your green thumb.

How tall are baby plants?

We aim to ship your plants when they’re 3-8” tall, though we often ship them taller than that.

What determines whether I get a 3-, 6-, or even 18-inch-tall plant?

The exact size of the plant we send you is variable on the time of year and how long we've been growing it out.

Honeysuckle Fuel brings out the blooms!

Named for our most popular flowering plant, Honeysuckle Fuel can help any flowering plant produce robust blooms.

Its power also extends to fruiting plants. When a plant is ready to start fruiting, use Honeysuckle Fuel to ensure its flowers turn into plump fruits.

Honeysuckle Fuel Flowering Plant Fertilizer - Water-Soluble 10-30-20 Blend - (1 or 2 LB bag)

Honeysuckle Fuel Flowering Plant Fertilizer - Water-Soluble 10-30-20 Blend - (1 or 2 LB bag)