vine

Calico Flower

The Story

Plant Bio

Aristolochia littoralis is an evergreen, twining woody vine native to South America, climbing by slender stems that coil around supportive structures. The alternate, kidney-shaped leaves emerge light green and mature to a glabrous medium green, providing a dense cover.

The solitary, pipe-shaped flowers feature a creamy-white exterior heavily patterned with dark purple-brown veins and a deep chocolate-brown throat. These specialized blooms emit a carrion-like odor to attract and temporarily trap small flies for pollination.

Uses & Benefits:

Produces highly unusual, intricately patterned purple-and-cream flowers that serve as a dramatic focal point on trellises.

Provides quick, dense evergreen screening on vertical structures in frost-free climates.

Acts as a larval host plant for the Polydamas swallowtail butterfly in its native and introduced North American range.

Essentials

At a Glance

Plant Type

Vine

Height

144"

Width

72"

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Moderate

Humidity

High

Lifespan

Perennial

Native To

South America

Toxicity

Highly toxic if ingested; sap may irritate skin

Bloom period

Summer – Fall

In flower about 6 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with rich, humus-heavy, well-drained loamy soil.
Install a sturdy trellis, arbor, or fence to support the twining stems as they climb.
Water regularly during the growing season to maintain consistent soil moisture, avoiding waterlogged conditions.
Apply a balanced, slow-release fertilizer in spring and maintain a layer of organic mulch to preserve root moisture.

Pro Tip

Prune the vine heavily in late winter or early spring before new growth starts to control its vigorous spread, but avoid cutting back into old, leafless wood that lacks dormant buds.

Keep It Thriving

Care Guide

Do

Provide a strong support structure for the coiling stems to climb.
Keep the soil consistently moist but exceptionally well-drained.
Wear gloves when handling the plant to avoid potential skin irritation from the sap.

Don't

Do not plant this species near native butterfly habitats where it can disrupt local ecosystems.
Do not allow the soil to dry out completely during extended hot spells.
Do not prune into old, bare wood without visible dormant buds.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Mulch
Pest Check
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Trellis and Arbor CoverTropical AccentScreening Wall

Companion Plants

Plumbago auriculata Passiflora incarnata Tibouchina urvilleana

Multiply

Propagation Methods

Good to Know

Common Questions

Calico Flower questions

What zones can Calico Flower grow in?

Calico Flower is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Calico Flower deer resistant?

Yes — Calico Flower is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Calico Flower bloom?

Calico Flower typically blooms in summer through fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Calico Flower need full sun?

Calico Flower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.