Aquilegia 'Blue Barlow' is a clump-forming Aquilegia in the Ranunculaceae that flowers from May to July. It has deciduous foliage and suits positions in full sun or partial shade. Plant it in loam or sandy soils that are moist but well-drained and on south, east or west-facing, sheltered aspects. Its hardiness ratings of H6–H7 mean it is very hardy to fully hardy in UK conditions.

Aquilegia 'Blue Barlow' flowers from May to July and suits south to west-facing, sheltered sites in moist but well-drained loam or sandy soils.

Aquilegia 'Blue Barlow'

Columbine | Aquilegia 'Blue Barlow'

Aquilegia 'Kristall' is a clump-forming cultivar of columbine in the Ranunculaceae that produces its flowers from May to July. It carries deciduous foliage and prefers full sun to partial shade in a sheltered position. Plant it in moist but well-drained soil; it tolerates chalk, clay, loam or sand and a wide pH range. Hardy to H5 in the UK, it suits borders, wildlife plantings and underplanting beneath roses or shrubs.

Aquilegia 'Kristall' is a clump-forming columbine that flowers from May to July and prefers moist, well-drained soil in sheltered, sunny to part-shade.

Aquilegia 'Kristall'

Columbine (Aquilegia 'Kristall') | May–July flowers

Aquilegia flabellata is a perennial in the genus Aquilegia (family Ranunculaceae) that reaches about 0.3 m at maturity. It flowers from May to July and prefers a sunny position in sandy or loamy soils that are moist but well-drained. Plant where roots will not sit in water and allow enough room for clumps to spread. Wear gloves when handling, as the sap may irritate skin.

Fan-leaved columbine (Aquilegia flabellata) flowers May to July and grows to about 0.3 m in full sun on moist, well-drained sandy or loamy soil.

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

Aquilegia, commonly known as columbines, is a genus of perennial flowering plants in subfamily Thalictroideae of the family Ranunculaceae (buttercups). The genus includes between 70 and 400 taxa with natural ranges across the Northern Hemisphere.

Aquilegia flabellata

Fan-leaved columbine | Aquilegia flabellata

Aquilegia flabellata 'Ministar' is a clump-forming perennial columbine that produces a succession of blooms from May to July. It prefers full sun to partial shade and moist but well-drained soil over chalk, clay, loam or sand. Suited to sheltered, south-, east- or west-facing sites and rated H5 (hardy). Useful in cottage borders, wildlife plantings, under roses and as a source of cut flowers.

Aquilegia flabellata 'Ministar' is a clump-forming fan columbine that flowers May to July and suits sheltered, south- to west-facing borders.

Aquilegia flabellata 'Ministar'

Aquilegia flabellata 'Ministar' (Fan Columbine)

Aquilegia nigrescens is a perennial columbine in the Ranunculaceae, representative of a genus notable for spurred petals and marked variability. Plants of this genus typically have stiff stems and leaves divided into multiple leaflets, with flowers composed of five sepals and five petals. Petals often form nectar-bearing spurs whose length can differ between taxa. Flowering period is May to July.

Aquilegia nigrescens is a perennial columbine in the Ranunculaceae that flowers from May to July and belongs to a genus known for spurred petals.