vine

Potato Vine

The Story

Plant Bio

Solanum laxum is a fast-growing, semi-evergreen woody climber native to South America that scrambles by twining its slender petioles around support structures. The plant features glossy, dark green lanceolate leaves on zigzag stems, producing loose clusters of star-shaped white or pale blue flowers with prominent yellow anther cones from summer through fall.

This species is highly valued for its vigorous climbing habit and exceptionally long blooming period in warm climates. While it tolerates light winter frosts, hard freezes will kill the top growth back to the ground, from which it reliably reshoots in spring.

Uses & Benefits:

Produces a profusion of star-shaped white flowers with yellow centers over an exceptionally long summer-to-fall season.

Provides rapid vertical screening on fences, trellises, and coastal structures due to its salt tolerance.

Attracts bees, butterflies, and other beneficial pollinators, while birds consume the mature berries.

Essentials

At a Glance

Plant Type

Vine

Height

315"

Width

197"

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Moderate

Humidity

Moderate to high

Lifespan

Perennial

Native To

South America

Toxicity

Toxic if ingested

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 fertile, well-drained soil.
Install a trellis, arbor, or wire framework prior to planting to support the twining stems.
Dig a hole twice the width of the root ball and plant at the same depth as the container.
Water thoroughly at planting and maintain consistent moisture for the first twelve weeks until established.

Pro Tip

Provide a sturdy trellis or wire support immediately at planting; without early guidance, the twining petioles will tangle into a dense, sprawling mound that is difficult to train later.

Keep It Thriving

Care Guide

Do

Prune back unruly stems in late winter to encourage vigorous flowering side-shoots.
Apply a thick layer of organic mulch around the base, keeping it clear of the main stem.
Provide sturdy physical support early to guide the climbing petioles.

Don't

Do not plant in heavy, poorly drained clay soils where water pools.
Do not cut blindly into old, leafless woody trunks that lack active buds.
Do not ingest any part of the plant, as the berries and foliage contain toxic glycoalkaloids.

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 or Arbor CoverCoastal Garden ScreenPotted Patio Climber

Companion Plants

Trachelospermum jasminoides Rosa Clematis

Multiply

Propagation Methods

Good to Know

Common Questions

Potato Vine questions

What zones can Potato Vine grow in?

Potato Vine 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 Potato Vine deer resistant?

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

When does Potato Vine bloom?

Potato Vine 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 Potato Vine need full sun?

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

Is Potato Vine drought tolerant?

Yes — once established (usually after the first full season), Potato Vine handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.