Delphinium 'Rosemary Brock'
delphinium
This unusual delphinium produces spires of large, flat, magenta-pink discs with brown eyes in June and July. This variety has been...
2 litre pot
£28.99
available to order from spring 2027
3 × 2 litre pots
£65.99
£22.00 each
available to order from spring 2027
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Plant description
This unusual delphinium produces spires of large, flat, magenta-pink discs with brown eyes in June and July. This variety has been given the Award of Garden Merit by the RHS because of its tip top performance, so 'Rosemary Brock' is a good one to include in a mixed or herbaceous border if you want to create vertical interest. For best effect plant in odd-numbered clumps or drifts. To encourage a second flush of flowers in late summer, cut the flowered stems back as soon as they have finished.
Eventual height & spread
Flowering period
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Plant features
Position
Full sun
Rate of growth
Average
Soil
Moderately fertile, moist but well-drained soil, or peat-free general purpose compost
Hardiness
Fully hardy
How to care for Delphinium Rosemary Brock:
For best results, plant in an open spot with fertile, freely-draining soil and protect the young foliage against slug and snail damage.
During the growing season, apply a seaweed or balanced liquid fertiliser every 2-3 weeks. While wearing gloves, stake the emerging flower spike with a stout bamboo cane and tie it in as it grows.
Cutting back the faded flower stems to a flowering side shoot will help encourage a second flush of flowers.
During the growing season, apply a seaweed or balanced liquid fertiliser every 2-3 weeks. While wearing gloves, stake the emerging flower spike with a stout bamboo cane and tie it in as it grows.
Cutting back the faded flower stems to a flowering side shoot will help encourage a second flush of flowers.
Please note:
This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.
Warning
Humans/Pets: Harmful if eaten
