Unpack bare roots or rhizomes on arrival and plant them within a week. Until then, keep them somewhere cool and ensure the roots remain slightly moist, never wet.
Out of season
New
Delphinium 'Black Velvet' is a striking spectacle for any UK garden, commanding attention with its tall, stately spires of deep, semi-double flowers. In summer, this larkspur produces densely-packed blooms in a dark purple so rich it seems to drink in the sunlight, creating a dramatic contrast against its fresh green foliage. Delphinium 'Black Velvet' is perfect for adding vertical impact to mixed borders, cottage gardens, or even a bold statement at the back of a perennial bed. Its upright, elegant habit ensures it stands proud while maintaining a sense of refined grace.
Ideal for sunny spots with well-drained soil, Delphinium 'Paramo Black Velvet' rewards careful placement with a long-lasting display of colour. The densely-packed spires of dark purple blooms sway lightly in summer breezes, offering both texture and depth to garden compositions. Delphinium 'Black Velvet' is a showpiece for adding sophistication to borders and cutting gardens alike, while its semi-double blooms provide interest from bud through to fading petals. Whether planted in groups for a dramatic swathe of near-black flowers or mixed with lighter-coloured companions to highlight its rich hues, Delphinium 'Black Velvet' promises an unforgettable summer presence, bringing elegance, height, and a touch of mystery to UK gardens.
Quantity
Plant profile
Plant calendar
Remove the packaging straight away, check the compost and water thoroughly if dry. Check the plant’s hardiness before placing it outdoors. Plant into a border or permanent container within a month, choosing the position recommended for the variety. Keep the top of the root ball level with the surrounding soil, firm gently and water well.
Soak the roots in water for three to six hours immediately before planting. Keep any crown, buds or emerging shoots above the water where possible.
Pot most bare roots into 15–20cm pots filled with peat-free multipurpose compost. Large or depth-sensitive roots, including peonies, are often best planted directly into borders.
Arrange the roots naturally without bending them. Cover the roots completely, positioning the crown and buds at the depth recommended for that particular perennial.
Keep pots in a sheltered outdoor position and water whenever the compost begins to dry. Grow on until roots hold the compost together when lifted from the pot.
Plant into a suitable border or permanent container once well rooted. Add a label and water regularly throughout the first growing season while the perennial establishes.
- Botanical name
- Delphinium 'Paramo Black Velvet' ('Barthirty'ᴾᴮᴿ)
- Flower colour
- Dark purple
- Established height
- 1-1.2m
- Established spread
- 30-50cm
- Growing skill
- Easy to grow
- Habit
-
Upright
Clump-forming - Hardiness
- Fully hardy
- Leaf colour
- Green
- Mouse resistant
- No
- Plant size
- 1
- Plant spacing
- 5 plants per m2
- Pollinator friendly
- No
- Position
- Sheltered
- Rabbit resistant
- Yes
- Scented
- No
- Soil acidity
- Any
- Soil moisture
- Free draining
- Soil type
-
Loam
Sandy
Stony
Multipurpose compost
Loam-based compost - Suitable for
-
Large containers
Borders
Cottage gardens
Low maintenance gardens
Cut flower gardens - Sunlight
- Full sun
- Toxicity
-
Skin/eyes irritant
Harmful if eaten - Years to establish
- 2-3 years
Good for cutting
Pollinator-friendly
Thrives in full sun
Perennial
Fully hardy
Packed peat-free
Low maintenance
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Delphinium 'Black Velvet' reviews
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