Bletilla striata is a terrestrial orchid that forms low clumps to about 0.4 m and bears magenta-pink flowers from May to July. It grows in loamy, moist but well-drained soil with a pH close to 6.0–7.0 and accepts full sun or partial shade. Best placed in an east or west aspect and given some shelter from exposure. Fully hardy in the UK (H7) and suitable for borders, rock gardens and containers.

Chinese ground orchid (Bletilla striata) blooms May to July and suits sheltered, east or west aspects in loamy, moist but well-drained soil.

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

Bletilla, commonly named the urn orchid, is a temperate, terrestrial genus of orchids. The genus currently contains five recognized species distributed through China, Japan, Taiwan, south to Vietnam, Thailand and Myanmar.

Bletilla striata

Chinese ground orchid | Bletilla striata

Calanthe discolor is a terrestrial orchid from East Asia, known in cultivation by its two-coloured common name and for mildly fragrant flowers. It grows in partial shade and suits east- or north-facing, sheltered spots. The plant requires moist, well-drained, humus-rich soil that is acidic to neutral. In the UK it flowers from May to July.

Two-coloured calanthe (Calanthe discolor) is a mildly fragrant woodland orchid for east- or north-facing, sheltered sites in moist, humus-rich, acidic to.

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

Calanthe, commonly known as Christmas orchids, is a genus of about 220 species of orchids in the family Orchidaceae. They are evergreen or deciduous terrestrial plants with thick roots, small oval pseudobulbs, large corrugated leaves and upright, sometimes arching flowering stems.

Calanthe discolor

Two-coloured calanthe | Calanthe discolor

Calanthe tricarinata is an orchid in the genus Calanthe native to East and South Asia. It flowers in the UK season from May to July. The plant prefers partial shade and a consistently moist, well-drained, humus-rich soil. Position it in a sheltered, shaded spot and maintain a supply of organic matter to support growth.

Calanthe tricarinata is an orchid that flowers from May to July and prefers partial shade with moist, well-drained, humus-rich soil.

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

Calanthe tricarinata

Cypripedium arietinum is a terrestrial orchid, the ram's-head slipper orchid, belonging to the genus Cypripedium in the Orchid family. It flowers from May to July. Native to parts of Canada — Manitoba, Nova Scotia, Ontario, Quebec and Saskatchewan — it prefers shaded, sheltered sites. The plant favours moist, acidic, sandy, well-drained soil on north or east aspects.

Ram's-head slipper orchid (Cypripedium arietinum) flowers May to July and suits sheltered, north- or east-facing sites with moist, acidic, sandy soil.

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

Cypripedium is a genus of 58 species and nothospecies of hardy orchids; it is one of five genera that together compose the subfamily of lady's slipper orchids (Cypripedioideae). They are widespread across much of the Northern Hemisphere, including most of Europe and Africa (Algeria), Russia, China, Central Asia, Canada the United States, Mexico, and Central America.

Cypripedium arietinum

Ram's-head slipper orchid | Cypripedium arietinum

Cypripedium calceolus is an orchid that flowers in the UK from May to July. Native from Europe to Japan, it prefers sheltered, north- or east-facing positions in partial shade. It requires moist but well-drained, humus-rich soil with a neutral to slightly alkaline pH and is rated H5 (hardy) for UK conditions. It is a skin allergen, so wear gloves and other protective equipment when handling.

Yellow lady's slipper orchid Cypripedium calceolus flowers May to July and prefers partial shade in humus-rich, neutral to slightly alkaline soil.

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

Cypripedium calceolus

Yellow lady's slipper orchid | Cypripedium calceolus

Cypripedium californicum is a lady's slipper orchid in the genus Cypripedium, native to the western United States. It is grown for its distinctive slipper-type flower and flowers in late spring to midsummer. In cultivation it prefers partial shade, moist loamy soil and a sheltered, north- or east-facing position.

California lady's slipper (Cypripedium californicum) flowers May to July and prefers partial shade in moist, loamy, neutral to slightly acidic soil.

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

Cypripedium californicum

California lady's slipper | Cypripedium californicum

Cypripedium candidum is an orchid known by the common name white lady's slipper and notable for its slipper-like flower. It naturally occurs in alkaline wetlands and fen habitats. Plants perform where soil remains moist and with partial shade. Expect flowering from May to July.

White lady's slipper (Cypripedium candidum) is an orchid for moist, calcareous alkaline fens that flowers from May to July.

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

Cypripedium candidum

White lady's slipper | Cypripedium candidum

Cypripedium montanum is an orchid in the Cypripedium genus commonly called the Large Lady's Slipper. It flowers from May to July. The species favours partial shade on north- or east-facing sites and prefers moist, loamy, well-drained soil of neutral to slightly acidic pH in a sheltered position. It is native to parts of western Canada, including Alberta, British Columbia and Saskatchewan.

Large Lady's Slipper (Cypripedium montanum) is a Cypripedium orchid flowering May to July that prefers partial shade and moist, loamy, neutral to slightly.

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

Cypripedium montanum

Large Lady's Slipper, Mountain Lady's Slipper, White Lady's Slipper | Cypripedium montanum

Cypripedium parviflorum is an orchid (genus Cypripedium) commonly called Slipper Root and native to North America. It flowers from May to July and prefers shaded, sheltered positions. Plants do best in moist, loamy, well-drained soil that is acidic to neutral. Position in north or east-facing spots where shade and shelter are reliable.

Slipper Root (Cypripedium parviflorum) is a North American orchid for shaded, moist, loamy soil and flowers from May to July.

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

Cypripedium parviflorum

Slipper root | Cypripedium parviflorum

Cypripedium pubescens, the Yellow Lady's Slipper, is a lady's slipper orchid native to North America. It flowers from May to July and favours partial shade. Give it rich, well‑drained loamy soil that remains moist and leans acidic to neutral in pH, sited in a sheltered north or east-facing position.

Yellow Lady's Slipper (Cypripedium pubescens) prefers partial shade and moist, rich loamy soil with an acidic to neutral pH and flowers May to July.

Cypripedium pubescens

Yellow Lady's Slipper | Cypripedium pubescens

Cypripedium reginae is a terrestrial orchid in the genus Cypripedium, notable for its status as a lady’s-slipper orchid and its seasonal bloom. It is native to eastern North America and, in the UK, flowers from May to July. The plant prefers partial shade and humus-rich, well-drained soil that remains reliably moist with an acidic to neutral pH. Its tissues can provoke a skin allergic reaction, so wear gloves and protective equipment when handling.

Showy Lady's Slipper (Cypripedium reginae) prefers moist, humus-rich, acidic to neutral soil in partial shade and flowers in May to July.

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

Cypripedium reginae

Showy lady's slipper orchid | Cypripedium reginae

Cypripedium tibeticum is a species of slipper orchid native to Bhutan, Sikkim and western China. It favours partial shade and a consistently moist, humus-rich, well-drained soil with a neutral to slightly acidic pH. Flowering occurs from May to July. Plant where the soil remains cool and lightly shaded through the growing season.

Cypripedium tibeticum (Lady's Slipper Orchid) prefers partial shade and moist, humus-rich, neutral to slightly acidic soil and flowers from May to July.

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

Cypripedium tibeticum

Lady's Slipper Orchid | Cypripedium tibeticum

Cypripedium ventricosum is a perennial lady's slipper orchid hybrid valued for its pouch-like, slipper-shaped blooms. It suits partial shade in sheltered, semi-shaded sites and flowers from May to July. Plant in a well-drained, humus-rich soil that is neutral to slightly acidic and kept moist but free-draining. Handle with care: the plant is a skin allergen, so wear gloves and protective equipment when working with it.

Lady's slipper orchid (Cypripedium ventricosum) prefers partial shade and humus-rich, neutral to slightly acidic soil and flowers from May to July.

Cypripedium ventricosum

Lady's slipper orchid hybrid | Cypripedium ventricosum

Dactylorhiza purpurella x Larissa gx is a clump-forming orchid in the genus Dactylorhiza, grown for its seasonal flowering. It carries deciduous foliage and dies back after the season. It prefers partial shade on loam that remains moist but drains freely, tolerating acid to alkaline pH. Flowering occurs May to July.

Dactylorhiza purpurella x Larissa gx is a clump-forming Dactylorhiza orchid for moist, loamy soil in partial shade, flowering May to July.

Dactylorhiza is a genus of flowering plants in the orchid family Orchidaceae. Its species are commonly called marsh orchids or spotted orchids.

Dactylorhiza purpurella x Larissa gx

Epipactis atrorubens is an orchid in the genus Epipactis, commonly called the dark red helleborine. It prefers well-drained, calcareous (alkaline) soils and suits south-facing positions with dry to moderate moisture. Flowering takes place in July–August. The species tolerates both sheltered and exposed sites and carries a UK hardiness rating of H5.

Dark red helleborine (Epipactis atrorubens) prefers well-drained, calcareous alkaline soil and flowers in July–August.

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

Epipactis, or helleborine, is a genus of terrestrial orchids consisting of approximately 70 species. This genus is abbreviated as Epcts in horticultural trade.

Epipactis atrorubens

Dark red helleborine | Epipactis atrorubens

Epipactis gigantea is an orchid that favours moist to wet soils and produces summer flowers with a mild, sweet fragrance. It occurs naturally from Canada to Mexico and suits damp margins and meadows. Plants tolerate partial shade to full sun and prefer neutral to slightly acidic sandy or loamy soils kept moist. Flowering runs July to August in the UK.

Giant helleborine (Epipactis gigantea) is an orchid for moist, sandy or loamy soils that flowers in July–August with a mild, sweet fragrance.

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

Epipactis gigantea

Giant helleborine | Epipactis gigantea

Epipactis helleborine is an orchid whose common name reflects its broad leaves and summer-flowering habit. It belongs to the genus Epipactis within the Orchid family and carries a mild, sweet fragrance. The plant prefers shady to partially shaded positions in neutral to alkaline, moist soils. Flowering occurs in July–August in UK conditions.

Broad-leaved helleborine (Epipactis helleborine) flowers in July–August and suits shady, moist, neutral to alkaline soils in average UK gardens.

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

Epipactis helleborine

Broad-leaved helleborine | Epipactis helleborine

Orchis militaris is a European orchid that produces upright flowering spikes to about 0.6 m. It flowers from April to June, carrying lilac to purple blooms. The plant prefers full sun and tolerates a range of soils so long as they remain moist but well-drained and is fully hardy in UK gardens (H7).

Military orchid (Orchis militaris) flowers April to June, reaches about 0.6 m and favours full sun in moist but well-drained sandy to clay soils.

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

Orchis is a genus in the orchid family (Orchidaceae), occurring mainly in Europe and Northwest Africa, and ranging as far as Tibet, Mongolia, and Xinjiang. The name is from the Ancient Greek ὄρχις, meaning "testicle", from the appearance of the paired subterranean tuberoids.

Orchis militaris

Military orchid | Orchis militaris

Orchis purpurea is a terrestrial orchid that produces a dense spike of closely packed flowers, the upper petals and sepals showing purple tones while the lip is pale and often spotted. It favours calcareous, alkaline soils in partial shade and flowers in spring. Plants form a basal rosette of fleshy leaves that surround the flowering stem. Flowering in the UK runs April to June.

Lady orchid (Orchis purpurea) bears purple-tinged blooms with a pale, spotted lip and flowers April to June in partial shade.