Overview
Gladiolus dalenii 'Boone' is a perennial in the genus Gladiolus, part of the Iridaceae family. It typically grows around 1.5 m tall. Gladiolus dalenii 'Boone' grows best in full sun, and tolerates sandy and loamy soils. Its UK hardiness is rated H4. Suggested uses include borders and cut flowers. It is native to Africa.
About
Gladiolus dalenii 'Boone' is a gladiolus cultivar in the iris family notable for producing several tall flowering spikes. It typically bears blooms ranging from yellow to scarlet, often streaked red over a yellow ground and usually with a yellow throat. It is derived from a widely distributed African species that is a principal parent of the large grandiflora hybrids. The plant flowers in the UK from July to September.
About the genus
Gladiolus is a genus of perennial cormous flowering plants in the iris family (Iridaceae).
Wikipedia contributors, "Gladiolus", CC BY-SA 4.0 — Gladiolus
In the garden
Gladiolus dalenii 'Boone' belongs to the Iridaceae and traces its ancestry to a broadly distributed African species found from eastern South Africa and Madagascar through tropical Africa and into western Arabia. That parentage is significant: Gladiolus dalenii is a main contributor to the grandiflora hybrid group and includes diploid, tetraploid and hexaploid races, with many resulting hybrids occurring as tetraploids. This genetic variety helps explain the large, showy spikes typical of the group. Give this cultivar a sunny, sheltered site in a light sandy, stony, gritty loam where soil pH sits close to neutral to slightly acid (about 6.5–7). The plant prefers free-draining conditions and a little grit mixed into the planting soil helps replicate its favoured medium. Such a position reduces the risk of waterlogging and encourages clean, upright flowering spikes. Use Gladiolus dalenii 'Boone' at the rear of a summer border or where tall architectural spikes can be seen from a path or window; it reliably produces multiple tall flower spikes that open in sequence. Expect flowering from July to September and up to five tall spikes carrying yellow to scarlet flowers, often streaked red over a yellow ground with a yellow throat.
Growing conditions
Best soil and position for Gladiolus
- Sunlight
- Full sun
- Soil type
- Sandy, Loamy
- Soil moisture
- Moist but well-drained
- UK hardiness
- H4
Plant details
Gladiolus dalenii 'Boone' size, habit and characteristics
- Plant type
- Perennial
- Height
- 1.5 m
- Suggested uses
- Borders, Cut flowers
- Native to
- Africa
Care notes
Pruning and caring for Gladiolus dalenii 'Boone'
- Cultivation
- Plant corms in spring after risk of frost has passed. Provide full sun and well-drained soil. Water regularly during growing season.
- Pruning
- Remove spent flower spikes to encourage further blooming and prevent seed formation.
- Propagation
- Corm division, seed
Frequently asked questions
How do I grow Gladiolus dalenii 'Boone'?
Plant corms in spring after risk of frost has passed. Provide full sun and well-drained soil. Water regularly during growing season.
Where is the best place to plant Gladiolus dalenii 'Boone'?
Gladiolus dalenii 'Boone' prefers full sun.
What soil does Gladiolus dalenii 'Boone' need?
Gladiolus dalenii 'Boone' grows best in sandy and loamy soil. Aim for soil that stays moist but well-drained.
How do I prune Gladiolus dalenii 'Boone'?
Remove spent flower spikes to encourage further blooming and prevent seed formation.
How big does Gladiolus dalenii 'Boone' grow?
Gladiolus dalenii 'Boone' reaches a height of 1.5 m.
Is Gladiolus dalenii 'Boone' hardy in the UK?
Gladiolus dalenii 'Boone' has an RHS hardiness rating of H4, meaning it is hardy through an average UK winter, tolerating -10 to -5°C.
How do I propagate Gladiolus dalenii 'Boone'?
Corm division, seed.
More in the Gladiolus genus
- Gladiolus 'Nicholas' (S)

- Gladiolus 'Rose Laguna'Sword Lily

- Gladiolus liliaceusSword Lily

- Gladiolus primulinus
- Gladiolus 'Chemistry'Sword Lily
- Gladiolus 'Fat Boy'PBR
- Gladiolus Hybrids and Primulinus HybridsSword Lily
- Gladiolus melleriSword Lily