perennial

Sizemore's Amorphophallus

The Story

Plant Bio

Amorphophallus sizemoreae is a tuberous perennial known for its large, dramatic inflorescence and palmate, deeply lobed leaves that resemble a tropical foliage display.

This species is distinguished by its relatively smaller size compared to other Amorphophallus species and its striking, deep purple spathe with a contrasting yellowish spadix.

Uses & Benefits:

Provides a striking, exotic focal point with its unique appearance and deep purple flowers.

Requires minimal maintenance once established, suitable for shaded areas.

Supports local insect populations when in bloom, though not specifically attracting pollinators.

Essentials

At a Glance

Plant Type

Perennial

Height

30 inches

Width

18 inches

Light

Partial Sun, Shade

Zones

9, 10

Water

Moist but well-drained

Humidity

High

Lifespan

Perennial

Native To

Southeastern Asia

Toxicity

Yes

Bloom period

Spring – Late fall

In flower about 8 months of the year

Planting

How to Grow

Choose a shaded, well-drained spot in the garden.
Plant corms 4-6 inches deep in rich, moist soil.
Water regularly to keep soil moist but not soggy.
Mulch to retain moisture and regulate soil temperature.
Allow the plant to establish for 1-2 years before flowering.
Tuck in some organic fertilizer during early spring.

Pro Tip

Plant in shaded areas with moist, well-drained soil for best results.

Keep It Thriving

Care Guide

Do

Keep soil consistently moist 🌱
Mulch to conserve moisture
Provide shade in hot climates
Use organic fertilizer in spring

Don't

Avoid waterlogging ❌
Don’t expose to direct, harsh sunlight 🌱
Refrain from over-fertilizing
Never handle toxic parts without gloves

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Lift Store
Plant
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shade-loving garden bedTropical-themed border

Companion Plants

Ferns Hostas Caladiums Begonias

Multiply

Propagation Methods

Good to Know

Common Questions

Sizemore's Amorphophallus questions

What zones can Sizemore's Amorphophallus grow in?

Sizemore's Amorphophallus 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 Sizemore's Amorphophallus deer resistant?

Not reliably. Deer may browse Sizemore's Amorphophallus, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Sizemore's Amorphophallus bloom?

Sizemore's Amorphophallus typically blooms in spring through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Sizemore's Amorphophallus need full sun?

Sizemore's Amorphophallus does best in part shade.