Begonia × intermedia 'Bertinii' (T)
begonia 'Bertinii'
A tender, tuberous perennial to around 40cm, with dark green, lobed foliage. Trailing stems of bright red, tubular-shaped flowers with yellow stamens appear over a long flowering period from May through to October. A good choice for hanging baskets or for the front of a border to soften the edges
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
1 yearUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Red | Green | ||
|---|---|---|---|---|
| Summer | Red | Green | ||
| Autumn | Red | Green | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered Hardiness
H2Botanical details
- Family
- Begoniaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Bushy, Trailing
- Potentially harmful
- Ornamental bulbs - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Ornamental bulbs - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
- Genus
Begonia can be annuals, evergreen or deciduous perennials or shrubs, with fibrous, tuberous or rhizomatous roots and usually asymmetrical leaves, often strikingly patterned, and small or large flowers, both male and female in the same cluster
- Name status
Accepted
- Horticultural Group
- Tuberhybrida begonias are bushy tuberous perennials with glossy leaves and usually double flowers in small clusters in summer; most are dormant in winter
How to grow
Cultivation
Ideal for hanging baskets and tubs, and generally bought as cuttings. Start off indoors in spring in light, well-drained, neutral compost. May be grown permanently under glass in bright light shaded from direct sun. Otherwise move outdoors into a sunny or semi-shaded postion when all risk of frost is past. Dry off tubers in winter and store frost free. See begonia: outdoors for further advice
Propagation
Propagate by basal or stem-tip softwood cuttings in spring
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- hanging basket
- Houseplants
- Patio and container plants
- Bedding
- Conservatory and greenhouse
- Garden edging
Pruning
Remove old stems and foliage as the plant dies back for winter
Pests
May be susceptible to caterpillars, mealybugs, thrips, glasshouse red spider mite, vine weevil and aphids
Diseases
May be susceptible to grey moulds, powdery mildews, stem rot and rhizome rot
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.