Yucca elata is a perennial yucca from the deserts of southwestern North America, notable for its upright trunk and summer flower clusters. It reaches about 2.0 m and prefers full sun and well-drained soils, including sandy, loamy or clay types. Creamy-white, bell-shaped flowers appear in June to August. Handle with gloves as the foliage can be a skin allergen and it is harmful to pets if eaten.

Soap tree (Yucca elata) is a perennial yucca with creamy-white flowers that appear in June to August.

https://en.wikipedia.org/wiki/Yucca_elata

Yucca is both the scientific name and common name for a genus native to North America from Panama to southern Canada. It contains 50 accepted species.

Yucca elata

Soap tree | Yucca elata

Yucca filamentosa is an evergreen shrub forming a low clump of stiff, strap-shaped, blue-green leaves and producing upright flower stems with pendulous cream blooms. Plants commonly reach about 1.2 m. It prefers full sun and well-drained soil and flowers in June to August. The leaves can cause skin irritation, so wear gloves and keep pets from eating the foliage.

Needle Palm (Yucca filamentosa) is an evergreen yucca with blue-green leaves and cream flowers in June to August.

https://en.wikipedia.org/wiki/Yucca_filamentosa

Yucca filamentosa

Needle palm | Yucca filamentosa

Yucca filamentosa 'Elegantissima' is an evergreen shrub with stiff, strappy leaves edged by fine white filaments and a compact 1.2 m mature height. It produces upright stalks of pendulous cream flowers in June to August. The foliage has a blue‑green tone that holds through the year. Plants tend to form clumps by means of basal shoots.

Adam's Needle (Yucca filamentosa 'Elegantissima') has blue‑green, filament‑edged leaves and bears cream flowers in June to August.

Yucca filamentosa 'Elegantissima'

Adam's Needle | Yucca filamentosa 'Elegantissima'

Yucca filamentosa 'Rosenglocke' is an evergreen perennial that forms a clump to about 1.2 m and produces upright flower spikes in June to August. It is native to the southeastern United States and favours a sunny position. Plant in well-drained sandy, loamy or clay soils and avoid prolonged waterlogging. Flower spikes carry cream blooms above the foliage.

Yucca filamentosa 'Rosenglocke' (Adam's needle) is an evergreen perennial to 1.2 m that flowers June to August and favours full sun and well-drained soil.

Yucca filamentosa 'Rosenglocke'

Adam's Needle | Yucca filamentosa 'Rosenglocke'

Yucca filamentosa 'Schneefichte' is an evergreen shrub that reaches about 1.2 m and flowers in the UK from June to August. It favours a sunny, open position and tolerates a range of soils provided drainage is good. The plant is fully hardy (H7) and suited to exposed, sunlit spots. Use it where a vertical, architectural element is required in a border, rock garden or dry scheme.

Adam's Needle 'Schneefichte' (Yucca filamentosa 'Schneefichte') is an evergreen, fully hardy shrub for full sun that flowers June to August.

Yucca filamentosa 'Schneefichte'

Adam's needle 'Schneefichte' | Yucca filamentosa 'Schneefichte'

Yucca filamentosa 'Variegata' is an evergreen shrub distinguished by its sword-like, variegated leaves that form a compact, architectural clump. It typically grows to about 1.2 m and sends up tall flower stems in June to August. The bloom display comprises cream, pendant flowers. Leaves show thin, filamentous edges that add texture at close range.

Variegated Adam's Needle (Yucca filamentosa 'Variegata') is a fully hardy, full-sun evergreen with variegated leaves and cream flowers June to August.

Yucca filamentosa 'Variegata'

Variegated Adam's Needle | Yucca filamentosa 'Variegata'

Yucca filamentosa var. concava is an evergreen shrub that favours full sun and well-drained soil. It grows to about 1.2 m and retains a compact, upright habit. Flower spikes appear in summer and carry cream blooms from June to August. Handle with care: foliage can be a skin allergen and is harmful to pets if eaten.

Needle Palm (Yucca filamentosa var. concava) prefers full sun in well-drained soil and flowers June to August.

Yucca filamentosa var. concava

Needle palm | Yucca filamentosa var. concava

Yucca flaccida is a perennial yucca known for its summer display of creamy-white flowers. It prefers full sun and very well-drained, sandy or rocky soils and accepts dry to medium moisture levels. Native to south-central and southeastern North America, it suits planted positions where drainage and exposure are good. Use it in rock gardens, xeriscaping or as a structural border plant.

Adam's needle (Yucca flaccida) is a perennial yucca with creamy-white summer flowers, suited to sunny, well-drained sandy or rocky sites.

https://en.wikipedia.org/wiki/Yucca_flaccida

Yucca flaccida

Adam's needle | Yucca flaccida

Yucca flaccida 'Ivory' is a perennial, evergreen yucca traded as Needle Palm 'Ivory'. It suits well-drained sandy or loamy soils and tolerates dry to medium moisture. Position it in full sun or partial shade; its UK hardiness is H5 (hardy). It flowers from June to August.

Needle Palm 'Ivory' (Yucca flaccida 'Ivory') is an evergreen perennial that prefers well-drained, sandy soils and flowers from June to August.

Yucca flaccida 'Ivory'

Needle palm 'Ivory' | Yucca flaccida 'Ivory'

Yucca flaccida variegated is a variegated form of Yucca that forms a stemless basal rosette of sword-like leaves. The cultivar keeps the compact habit, typically under 0.6 m tall with a spreading outline to about 1.5 m. In summer it sends up tall panicles of bell-shaped, creamy white flowers. Its origins lie in south‑central and southeastern North America where it grows in open, sandy places.

Adam's Needle (Yucca flaccida variegated) has a variegated basal rosette and produces creamy-white flowers from June to August.

Yucca flaccida variegated

Adam's Needle | Yucca flaccida variegated

Yucca glauca is a perennial evergreen often grown for its erect form and summer flower spikes. It reaches about 1.5 m and suits a sunny, open position. Flowers appear from June to August and are white to very pale green. Handle with care: the plant can cause skin irritation and is harmful to pets if eaten.

Soapweed Yucca glauca produces pendent white to very pale green flowers from June to August and prefers full sun and well-drained soil.

https://en.wikipedia.org/wiki/Yucca_glauca

Yucca glauca

Soapweed | Yucca glauca

Yucca gloriosa is an evergreen shrub that reaches about 1.8 m and is native to the south‑eastern United States. It flowers in the UK from June to August. The plant prefers full sun and sandy or loamy soils that are well drained. Handling can cause a skin allergic reaction and the plant is harmful to pets if eaten, so wear gloves and follow HTA guidance for pet-safety contacts.

Spanish dagger (Yucca gloriosa) is an evergreen shrub that flowers June to August and prefers full sun with well‑drained sandy or loamy soil.

https://en.wikipedia.org/wiki/Yucca_gloriosa

Yucca gloriosa

Spanish dagger | Yucca gloriosa

Yucca gloriosa 'Nobilis' is an evergreen shrub valued for its architectural rosette of stiff, sword-like leaves and upright flower spikes. It reaches around 1.8 m and retains foliage year-round. From June to August it bears clusters of white, bell-shaped flowers above the leaves. All parts of the plant are toxic if ingested, so place it where contact with children or pets is unlikely.

Noble Spanish Dagger (Yucca gloriosa 'Nobilis') is an evergreen yucca with white summer flowers, suited to full sun and well-drained, sandy or loamy soils.

Yucca gloriosa 'Nobilis'

Noble Spanish Dagger | Yucca gloriosa 'Nobilis'

Yucca gloriosa 'Variegata' is an evergreen shrub notable for its variegated, sword‑like foliage and compact stature, typically reaching about 1.8 m. It produces mildly fragrant flower panicles in mid‑summer (June to August). The cultivar prefers full sun and freely draining sandy or loamy soils but will tolerate moist yet well‑drained conditions. Plants are H6 hardy in the UK and are mildly toxic if ingested.

Variegated Spanish Dagger (Yucca gloriosa 'Variegata') is a variegated evergreen shrub for full sun in sandy or loamy, well‑drained soil, flowering June.

Yucca gloriosa 'Variegata'

Variegated Spanish Dagger | Yucca gloriosa 'Variegata'

Yucca gloriosa 'Vittorio Emmanuele' is an evergreen shrub in the genus Yucca that reaches about 1.8 m. It favours full sun on a south-facing aspect and performs best in sandy or loamy soils that are well drained. Rated H6 (very hardy) and suitable in USDA zones 6–11, it flowers from June to August. Plant it where dry, free-draining conditions can be maintained and where its form can be seen.

Yucca gloriosa 'Vittorio Emmanuele' is an evergreen shrub to 1.8 m that favours full sun, sandy loam and flowers from June to August.

Yucca gloriosa 'Vittorio Emmanuele'

Yucca recurvifolia is a shrubby yucca notable for its curved, pendulous leaves and an overall height of about 2.5 m. It prefers a sunny position in well-drained soil and produces its flower spikes in June to August. The plant originates from the south-eastern United States and suits warm, exposed sites. Handle with care: the foliage can cause a skin reaction and the plant is harmful to pets if eaten.

Curved-leaved Spanish Dagger (Yucca recurvifolia) is a full-sun shrub to about 2.5 m that flowers in June–August and prefers well-drained soils.

https://en.wikipedia.org/wiki/Yucca_gloriosa_var._tristis

Yucca recurvifolia

Curved-leaved Spanish dagger | Yucca recurvifolia

Yucca recurvifolia 'Variegata' is a trunk-forming yucca notable for its recurved, arching leaves and a branching habit that can reach around 2.5 m. It favours a sunny position and will grow in sandy, loamy or clay soils provided they drain freely. Rated H5 (hardy) in the UK and corresponding to USDA zones 7–10, it tolerates a range of climates where winter wet is avoided. Flowering occurs from June to August.

Yucca recurvifolia 'Variegata' is a trunk-forming yucca to 2.5 m for full sun and well-drained soils, hardy to H5.

Yucca recurvifolia 'Variegata'

Curve-Leaf Yucca | Yucca recurvifolia 'Variegata'

Yucca smalliana is a Yucca species growing to about 1.2 m and valued for its summer flowering. It performs best in full sun and on sandy, loamy or clay soils that are well drained, including sites that stay moist but drain freely. It is rated H4 for UK gardens and also corresponds to USDA zones 8–11. Flowers appear from June to August.

Yucca smalliana is a sun-loving Yucca to about 1.2 m that flowers in June–August and prefers full sun with well-drained sandy to loamy soils.

Yucca smalliana

Yucca whipplei is a perennial yucca that produces a tall flowering habit, typically reaching about 2.0 m and bearing fragrant blooms from June to August. It favours openly exposed, sunlit sites on free-draining soils. The plant tolerates a range of soil types — sandy, loamy or clay — provided drainage is good. Its stature and summer flowers make it suited to rock gardens, xeriscaping and bold border positions.

Chaparral yucca (Yucca whipplei) is a sun-loving perennial to about 2.0 m with fragrant summer flowers from June to August.

https://en.wikipedia.org/wiki/Hesperoyucca_whipplei

Hesperoyucca is a small genus of two recognized species of flowering plants closely related to, and recently split from, Yucca, which is in the century plant subfamily within the asparagus family.