North America Non-native Plant

Caladium

Botanical name: Caladium

USDA symbol: CALAD

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Pacific Basin excluding Hawaii âš˜ Non-native, reproduces and persists in the wild in Puerto Rico âš˜ Non-native, reproduces and persists in the wild in the U.S. Virgin Islands  

Caladium: The Colorful Heart-Shaped Beauty for Shady Spots If you’ve ever wondered how to add a splash of tropical color to those dim corners of your garden, meet the caladium! With its heart-shaped leaves painted in stunning combinations of pink, red, white, and green, this eye-catching plant brings the drama ...

Caladium: The Colorful Heart-Shaped Beauty for Shady Spots

If you’ve ever wondered how to add a splash of tropical color to those dim corners of your garden, meet the caladium! With its heart-shaped leaves painted in stunning combinations of pink, red, white, and green, this eye-catching plant brings the drama that shade gardens often lack. But before you fall head-over-heels for these gorgeous leaves, let’s dig into what makes caladiums tick and whether they deserve a spot in your landscape.

What Exactly Is a Caladium?

Caladiums are perennial forbs – basically herbaceous plants without woody stems that come back year after year (in the right conditions). Originally hailing from the Amazon Basin in South America, these tropical beauties have made themselves at home in warmer parts of the United States, particularly Florida and Louisiana, as well as various U.S. territories including Puerto Rico and the Virgin Islands.

As non-native plants that can reproduce and persist on their own in these areas, caladiums occupy an interesting middle ground in the gardening world. They’re not native, but they’re also not currently flagged as problematic invaders.

The Visual Appeal: Why Gardeners Love Them

Let’s be honest – caladiums are all about the wow factor. These plants are grown almost exclusively for their stunning foliage, which comes in patterns that look like nature’s own watercolor paintings. The heart-shaped leaves can display:

  • Vibrant pink centers with green edges
  • Pure white leaves with green veining
  • Red leaves with darker red spots
  • Multi-colored combinations that change throughout the growing season

While caladiums do produce flowers, they’re pretty underwhelming compared to the foliage show, and many gardeners actually remove them to keep the plant’s energy focused on those gorgeous leaves.

Where Do Caladiums Shine in Your Garden?

Caladiums are the perfect solution for those tricky shaded areas where many colorful plants fear to tread. They work beautifully in:

  • Shade gardens and woodland settings
  • Container gardens on covered patios
  • Borders under trees or along north-facing walls
  • Tropical and subtropical landscape designs
  • Indoor spaces as houseplants (in bright, indirect light)

Growing Conditions: What Makes Caladiums Happy

Think tropical vacation and you’ll have the right idea for caladium care. These plants thrive in:

  • Light: Partial shade to full shade (some varieties tolerate more sun)
  • Temperature: Warm conditions; hardy in USDA zones 9-11
  • Soil: Well-draining, rich, slightly acidic soil
  • Moisture: Consistent moisture without waterlogging
  • Humidity: High humidity levels (they love that tropical feel)

Planting and Care Tips for Success

Growing caladiums successfully is all about timing and creating the right environment:

  • Timing: Plant tubers after soil temperature reaches 70°F consistently
  • Depth: Plant tubers about 2 inches deep with the eyes facing up
  • Spacing: Allow 8-12 inches between plants
  • Watering: Keep soil consistently moist but never soggy
  • Fertilizing: Apply balanced liquid fertilizer monthly during growing season
  • Winter care: In cooler zones, dig up tubers before first frost and store indoors

The Wildlife Factor

Here’s where caladiums might leave you wanting more. While they’re stunning to look at, they don’t offer much in the way of pollinator support or wildlife benefits. Their flowers are inconspicuous and don’t attract bees or butterflies, and the foliage isn’t a food source for most native wildlife.

Should You Plant Caladiums?

Caladiums can be a fantastic addition to your garden if you’re looking for reliable, colorful foliage in shady spots and don’t mind their non-native status. They’re not currently considered invasive, making them a reasonable choice for gardeners who want tropical flair.

However, if supporting native ecosystems is a priority, consider mixing caladiums with native shade plants like coral bells (Heuchera), wild ginger, or native ferns that provide both beauty and ecological benefits.

The bottom line? Caladiums are like that friend who’s great at parties but doesn’t help with the dishes – they bring the visual excitement, but they’re not doing much heavy lifting for your local ecosystem. If that trade-off works for your garden goals, these colorful beauties might just be the perfect fit for your shady spaces!

Caladium

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Arecidae

Order

Arales

Family

Araceae Juss. - Arum family

Genus

Caladium Vent. - caladium

Species

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA