Ornatec InternationalSpecies reference sheet ยท ornatecinternational.com
Colutea istria
Bladder Senna
The Colutea istria, or Bladder Senna, is a hardy deciduous shrub native to southern Europe and the Mediterranean region. It is prized for its ornamental, inflated seed pods that resemble small bladders and its bright yellow, pea-shaped flowers, which bloom in summer. Growing up to 2 to 4 metres tall, it is an attractive and adaptable plant for dry, well-drained soils and sunny locations.
This low-maintenance shrub is an excellent choice for erosion control, hedges, and naturalised plantings in drought-prone areas.
Specifications
- Height2 to 4 metres
- Width1.5 to 3 metres
- Native toSouthern Europe, Mediterranean
- FoliagePinnate, light green leaves; deciduous
- Growth rateModerate
Conditions
- SoilPrefers well-drained, sandy, or rocky soils; tolerates nutrient-poor conditions
- LightFull sun to partial shade
- WaterLow; highly drought-tolerant once established
- ClimateThrives in temperate and Mediterranean regions
Additional Features
- FlowersBright yellow, pea-shaped flowers bloom in summer, attracting pollinators
- Seed PodsUnique, inflated, bladder-like seed pods that persist into autumn
- UsesIdeal for hedging, erosion control, and as a feature in naturalised gardens
- SpacingPlant 2 to 3 metres apart for hedges or standalone displays
- Low MaintenanceRequires little care; prune lightly after flowering to shape
- Pest ResistanceNaturally resistant to most pests and diseases
- Environmental BenefitsSupports pollinators and stabilises soil in dry conditions
The Bladder Senna is a striking and versatile shrub, perfect for adding colour, texture, and ecological value to drought-tolerant gardens and landscapes.
Availability by project review. Sizes, quantities, origin and export readiness are confirmed after your plant schedule is reviewed against destination, timing and quarantine requirements. MEWA certified for supply into Saudi Arabia; Australian Export Registered Establishment.
Enquiries: sales@ornatecinternational.com
310 Donkin Rd, Utchee Creek QLD 4871, Australia
Prepared 15 August 2026