Stunning spires of double flowers in soft pastel shades of pink, blue, cream and yellow on well-branched strong sturdy stems from June to September. Height 1m. Spread 45cm. Full sun. Fertile, moist, well-drained soil. Hardy. Attracts bees.
Delphinium ‘Rainbow Sensation’ is a beautiful perennial producing tall spires of double flowers in soft pastel shades. Ideal for borders and cut flower gardens, Delphinium ‘Rainbow Sensation’ adds height, colour, and pollinator interest to planting schemes.
PLANTING and AFTERCARE GUIDE
Best Planting Time
Spring: Plant Delphinium ‘Rainbow Sensation’ in spring when the soil is workable and beginning to warm, allowing roots to establish before active growth.
Early Autumn: Early autumn planting also suits Delphinium, giving the plant time to settle before dormancy.
Site Selection
Sunlight: Choose a position in full sun for the best flowering performance. Delphinium thrives in bright, open locations.
Soil: Fertile, moist, well-drained soil is essential. Improve soil with compost or well-rotted organic matter before planting.
Planting Instructions
Prepare the Hole: Dig a hole twice the width of the root ball and the same depth so roots have room to spread.
Soil Preparation: Mix compost or organic matter into the soil to enrich it and improve moisture retention.
Planting: Position your Delphinium so the root ball is level with the surrounding soil, then backfill and firm gently.
Watering After Planting: Water thoroughly after planting to help Delphinium ‘Rainbow Sensation’ establish quickly.
Watering Requirements
Growing Season: Keep the soil evenly moist during active growth to support healthy foliage and flower spikes.
Dry Periods: Water regularly during dry spells to keep your Delphinium healthy and flowering well.
Feeding
Spring: Apply a balanced fertiliser in early spring to encourage strong growth and flowering.
Mid-Season: A light supplementary feed can help maintain vigour and encourage continued flowering.
Pruning
Deadheading: Remove faded flower spikes to encourage additional blooms and keep Delphinium ‘Rainbow Sensation’ tidy.
Seasonal Care: Cut back stems after flowering to encourage fresh growth and possible repeat blooms.
Mulching
Spring: Apply organic mulch around the base to retain moisture and suppress weeds.
Seasonal Care: Mulching helps maintain soil fertility and supports the long-term health of Delphinium ‘Rainbow Sensation’.
Supporting the Plant
Staking: Tall flower spikes may require support, especially in exposed areas. Supporting your Delphinium helps prevent stems from bending or breaking.
Final Tips
Delphinium ‘Rainbow Sensation’ is a stunning border perennial that provides height, colour, and pollinator interest. With fertile soil, full sun, and regular care, Delphinium ‘Rainbow Sensation’ will thrive and produce impressive flower spikes year after year.
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