‘Blue Lace’ delphinium opens flowers in sky blue. Plants are English hybrid types, growing 5 to 6 feet tall. Hardy in Zones 3-7, ‘Blue Lace’ delphinium has improved tolerance of heat and humidity. It’s bred by Dowdeswell’s Delphiniums in New Zealand.
Larkspur, a type of delphinium, brings beautiful blue hues to a meadow garden. Traditional larkspur flowers from spring into early summer, but this variety, ‘Summer Blues’ Delphinium grandiflorum, flowers through summer, withstanding heat and humidity. It’s a short-lived perennial, meaning it will last two to three years in the meadow, then disappear. To keep the blue show going strong, plan to tuck new plants into soil or let plants self-sow (most effective in regions with cool summers). Hardy in Zones 3-7.
‘Cobalt Dreams’ delphinium is a classic English hybrid type of delphinium bred by Dowdeswell’s Delphiniums in New Zealand. The plant opens tall flower spikes packed with deep blue florets. The white center is known in delphinium talk as a “bee.” Cobalt Dreams grows 4 to 6 feet tall and is hardy in Zones 3-7.
‘Mini Stars’ delphinium is a dwarf type, with plants growing 18 to 30 inches tall. The shorter stature means plants typically don’t need staking, except possibly in the windiest locations. This is the perfect delphinium for tucking into pots or the front of a planting border. Flowers offer shades of purple, blue, mauve, pink, lavender and cream.
‘Guardian Lavender’ delphinium is versatile in the landscape, growing equally well in containers, planting beds and as a cut flower in cutting gardens. The secret to keeping cut delphinium stems looking great is to plunge the hollow stem, the moment it’s cut, into water. Plants are hardy in Zones 4-7 and grow 30 to 39 inches tall.