Dwarf gladiolus

Dwarf gladioli offer the upright flower spikes of traditional gladioli on shorter, more compact plants. Many belong to the Gladiolus nanus group, often known as dwarf gladioli or dwarf sword lilies, and typically reach around 40–80cm depending on the variety. Their reduced height makes them easier to place through mixed borders, beside paths and in containers, where the individual flowers can be appreciated at closer range.

These compact gladioli grow from corms and are planted in spring for flowers through summer, with some Nanus varieties beginning earlier than taller large-flowered forms. Give them a sunny, sheltered position in fertile, well-drained soil and plant in groups rather than as isolated stems. Their shorter stature generally makes them less dependent on staking, although a little support can still be useful in exposed UK gardens. Dwarf gladiolus corms also suit pots particularly well, provided the compost drains freely and does not dry out completely while the plants are in active growth.

Their scale changes how gladioli can be used. Repeat one Gladiolus nanus variety through a border to introduce upright accents without adding too much height, or combine several colours through a cutting patch or container display. The flower spikes are useful for the vase too, while the sword-shaped foliage keeps the planting neat before and after flowering. Nanus gladioli are generally considered hardier than many taller gladiolus hybrids, but in colder or wetter UK gardens it is still sensible to lift and store the corms frost free over winter, or protect them carefully where drainage is reliable.