Begonia x tuberhybrida 'Illumination Scarlet'
bulb corm tuber

Illumination Scarlet Tuberous Begonia

Begonia x tuberhybrida 'Illumination Scarlet'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Bulb Corm Tuber

Height

12 inches

Width

24 inches

Light

Partial Sun, Shade

Zones

9

Water

Moderate

Humidity

High

Lifespan

Tender perennial

Native To

South America (hybrid origin)

Toxicity

Toxic to pets

The Story

Plant Bio

Tuberous begonias (Begonia x tuberhybrida) are tender perennials grown for their showy flowers, which come in a vast array of colors and forms. They typically have succulent stems and fleshy, often asymmetrical leaves. This cultivar is part of the 'Illumination' series, known for a cascading or trailing habit ideal for hanging baskets. It produces a profusion of large, double, scarlet-red flowers from summer to frost.

Uses & Benefits:

Ornamental UsesVivid scarlet blooms add striking color to shaded gardens, attracting admiration and brightening dull corners.
Practical UsesProvides ground cover that suppresses weeds in shaded areas.
Ecological BenefitsSupports pollinators like bees and butterflies with vibrant flowers.

Marketplace

Where to Buy

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Planting

How to Grow

  1. Tuck tubers into well-draining soil in early spring for best growth.
  2. Mist cuttings lightly to maintain humidity and encourage rooting.
  3. Water regularly, keeping soil moist but not waterlogged during active growth.
  4. Apply balanced fertilizer monthly to promote vibrant flowering.
  5. Remove spent blooms to encourage continuous flowering.
  6. Lift and store tubers indoors in fall after foliage dies back.

Pro Tip

Use a humid environment and indirect light for thriving cuttings and tubers.

Keep It Thriving

Care Guide

Do

  • Water consistently to keep soil evenly moist ๐Ÿ’ง
  • Fertilize monthly during the growing season ๐ŸŒฑ
  • Remove dead or faded flowers to promote new blooms
  • Provide bright, indirect light for optimal flowering

Don't

  • Avoid overwatering to prevent tuber rot โŒ
  • Do not expose to direct, harsh sunlight which can scorch leaves
  • Skip fertilizing in winter when growth slows
  • Never forget to lift tubers before frost to prevent damage

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deadhead
Fertilize
Lift Store
Plant

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vivid scarlet border in shaded garden bedsColorful container plant on patiosAccent plant in mixed shade borders

Companion Plants

Caladium Ferns Hostas Impatiens Begonia rex

Multiply

Propagation Methods

Good to Know

Common Questions

Illumination Scarlet Tuberous Begonia questions

What zones can Illumination Scarlet Tuberous Begonia grow in?

Illumination Scarlet Tuberous Begonia is hardy in USDA Zones 9โ€“10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Illumination Scarlet Tuberous Begonia deer resistant?

Not reliably. Deer may browse Illumination Scarlet Tuberous Begonia, especially tender spring growth โ€” plan on repellents or fencing where pressure is high.

When does Illumination Scarlet Tuberous Begonia bloom?

Illumination Scarlet Tuberous Begonia typically blooms in summer to fall through late summer. Exact timing shifts a week or two with your zone โ€” Sow's bloom calendar maps it to your garden.

Does Illumination Scarlet Tuberous Begonia need full sun?

Illumination Scarlet Tuberous Begonia does best in part shade.

Keep exploring

Explore the genus

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Hardy in your zone?

Grow Illumination Scarlet Tuberous Begonia with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.

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