Delphinium Pacific Giants Black Knight Plants (Set of 3 or 6)

Add height and drama to your garden with this stunning Delphinium Pacific Giants 'Black Knight'. Renowned for its towering spires of deep violet-blue, semi-double flowers with contrasting dark centres (known as the \"bee\"), Black Knight is one of the most striking varieties in the celebrated Pacific Giants series. These garden-ready plants are supplied as a set of three in 1Ltr root-balls, well-established and ready to plant straight into borders or containers.

A classic cottage garden favourite, Delphinium 'Black Knight' produces magnificent, densely packed flower spikes that create a bold vertical accent in herbaceous borders and mixed plantings. The rich, dark blooms are highly valued for cut flower arrangements and are a magnet for bees and other pollinating insects. As a fully hardy herbaceous perennial, it will die back over winter and return reliably each spring with vigorous new growth.

What's Included:

• 3 or 6 x Delphinium Pacific Giants 'Black Knight' plants


• Supplied in 1Ltr root-balls, garden ready

Planting and Care Tips:

• Plant in a sheltered position in fertile, well-drained soil that retains moisture


• Prefers full sun but will tolerate light partial shade


• Stake tall flower spikes to protect them from wind damage


• After the first flush of flowers, cut spent stems back to encourage a second bloom later in the season


• Apply a mulch of well-rotted compost in spring to encourage strong growth


• Water regularly during dry spells, particularly while establishing

Cultural Information:

• Botanical Name: Delphinium elatum 'Black Knight' (Pacific Giants Series)


• Common Names: Delphinium, Larkspur


• Classification: Hardy Herbaceous Perennial


• Fully Grown Height and Spread: 120–180 cm x 60–90 cm


• Growth Habit: Upright, Clump-Forming Herbaceous Perennial with Tall Flower Spikes


• Perfect For: Herbaceous Borders, Cottage Gardens, Cut Flower Gardens, Back of Borders


• Flowering Time: June to July (possible second flush in early Autumn if cut back)


• Flower Colour: Deep Violet-Blue with Dark Central \"Bee\"


• Planting Position: Full Sun to Light Partial Shade, Sheltered


• Soil Type: Fertile, Moist but Well-Drained


• Hardiness: Fully Hardy


• Attracts: Bees, Butterflies and Pollinating Insects


• Foliage: Mid-Green, Deeply Divided Palmate Leaves

Notes: This listing is for the 'Black Knight' variety, distinguished by its exceptionally deep violet-blue flowers — one of the darkest shades available in the Pacific Giants series.

Free UK Delivery on Every Order

All orders placed Monday–Thursday before 2pm are packed the next working day and delivered within 24 hours of dispatch.

Example: Order on Monday → packed Tuesday → delivered Wednesday.

Orders placed Friday–Sunday are packed and shipped on Monday. We don't dispatch on weekends to ensure your plants travel fresh.

How Your Plants Arrive
Every plant is individually wrapped in our plastic-free packaging and secured in a custom box designed to keep them upright and protected in transit. If anything arrives damaged, get in touch — we'll replace it.

Returns
Not happy? Contact us within 14 days of delivery and we'll sort it out. See our full returns policy here.