Plant in moist, well-drained soil in full sun to partial shade. Space 24" apart. Protect from the wind. Delphiniums do not do well in hot areas with long summers. Stake plants to support tall flower spikes. Secure stakes in at least 12" of soil. Fertilize regularly during the growing season. Cut down the flower spike after it blooms and it may rebloom in fall. Mulch well over the winter. Grows 24-72" tall and blooms June-Sept, depending on variety. Hardy in zones 3-7.
Plant in poor, very well-drained soil in full sun. Space 12" apart. Drought tolerant. Well suited for a rock garden. Grows 8-10" tall. Blooms summer. Hardy in zones 3-10.
(Bleeding Heart) Plant in well-drained, humusy soil, in partial to full shade. It cannot tolerate constantly moist soil. May tolerate full sun in cool areas. Space 12-18" apart. Grows 18-36" tall. Blooms May to early June, depending on variety. 'Luxuriant' flowers spring to fall. Spectabilis varieties' foliage dies back in midsummer. Hardy in zones 3-9.
(Foxglove) Plant in moist, porous soil enriched with organic matter in full sun to partial shade. In hot areas, shade the plants lightly. Space 12-18" apart. Cut down flower spike after it blooms and it may rebloom. After the ground freezes in winter, mulch to prevent crown rot. Grows 48-60" tall. Blooms May to early June. Hardy in zones 4-9.
(Shooting Star) For all species, plant in a site with some protection from the afternoon sun that provides consistently moist, but not wet, soil conditions. Plant with the crown just below the surface; you may want to cover it with a bit of organic litter or moss, and water well. Once established, the crown will divide many times over and develop into a relatively dense clump producing many flower stems. Clumps can be divided in the fall by digging out the mass of crowns and roots and gently pulling apart the crowns and replanting them separately. Grows 18-20" tall. Blooms May-June. Hardy in zones 5-8.