Skip to content
The Authority Suite
Sprout Authority
Tuberous Begonia growing in a garden
Perennial flower

Tuberous Begonia plant profile

Begonia x tuberhybrida

A perennial flower for partial sun.

Last updated .

When to plant

When to plant Tuberous Begonia

Start tuberous begonias indoors in late winter, then move them outdoors once the weather has settled, the soil is warm, and all danger of frost is past (University of Minnesota: usually late May or early June in Minnesota). In cold climates the tubers are dug and stored dry over winter; left in the ground they would be killed.

The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.

Open Tuberous Begonia in my garden calendar

Shows the source-backed planting season, not frost-adjusted dates.

Growing conditions

Sun
Partial sun
Soil pH
5.5 to 8
Lifecycle
Perennial
Spacing
12 to 18 in apart
Hardiness
Zones 9a to 11bFind my hardiness zone

Common problems

Watch for these

Also watch for: tuber rot, stem rot.

Evidence trail

Evidence behind this profile

Original extension and institutional publications behind the planting, care, and safety facts on this page.

  1. Tuberous begonias

    University of Minnesota Extension. Supports general reference. Checked 2026-06-18.

  2. Begonia – Tuberous Types (Hybrid Tuberous Begonia, Tuberous Begonia)

    NC State Extension Gardener Plant Toolbox. Supports general reference. Checked 2026-06-18.

  3. Toxic and Non-Toxic Plants: Begonia (Begonia species) entry

    ASPCA Animal Poison Control Center. Supports pet-safety verdicts for dogs and cats. Checked 2026-07-18.