Dahlia Great Silence

Dahlia ‘Great Silence’ is a beautifully elegant variety with a softer, more romantic feel—perfect if you love refined colour rather than full-on fireworks. It produces gorgeous blooms in gentle blush, creamy peach and pink-toned shades (often with subtle shading that gives each flower real depth), making it ideal for calming planting schemes, cottage gardens and cut-flower displays. The flowers have that “florist bouquet” look and sit wonderfully in vases, pairing especially well with whites, soft pinks and silvery foliage.

Flowering from midsummer right through to the first frosts, ‘Great Silence’ is also a reliable garden performer. The more you deadhead (or cut for the house), the more flowers it will produce—so you’ll enjoy months of blooms both outdoors and indoors.

Planting Instructions

When to Plant:

Plant Dahlia tubers in spring. For the earliest flowers, start tubers in pots indoors from March to April, then plant out once the risk of frost has passed. If planting directly outside, wait until late spring when the soil has warmed.

Where to Plant:
Choose a sunny, sheltered position with fertile, well-drained soil. Dahlias are ideal for mixed borders, cutting gardens and patio containers. They love warmth and perform best in full sun.

How to Plant:

• Depth: Plant tubers about 10–15 cm (4–6 inches) deep, with the old stem (or growing point) facing upwards.
• Spacing: Space plants 45–60 cm (18–24 inches) apart, depending on the final size.
• Soil Prep: Enrich the planting area with well-rotted compost or manure. In heavy soil, improve drainage with grit.

Watering:
Water after planting. Once shoots appear and growth is underway, keep soil evenly moist, especially in dry spells. Avoid waterlogging. Container-grown Dahlias may need watering daily in hot weather.

Aftercare Tips:

• Pinch out the growing tip once plants are around 30 cm tall to encourage bushier growth and more flowers.
• Stake taller stems if needed, especially in exposed borders.
• Deadhead regularly (or cut for the vase) to keep plants flowering until autumn.
• After the first frost blackens the foliage, lift tubers and store dry and frost-free over winter, or protect in the ground with a thick mulch in milder areas.

Top Tip:
For the best vase life, cut Dahlia ‘Great Silence’ in the morning when the blooms are fully open, then pop straight into fresh water—and don’t forget to keep deadheading for more flowers outside.

Plant Details

Flowering Period:

July - October (until first frosts)

Height:
24–36" (60–90cm) (approx. depending on conditions)

Position:
Full sun

Tender Perennial:
Overwinter tubers frost-free in the UK