Name: ‘Night Silence’ Dahlia
Brand: Van Noort
SKU: VAN-327-405-61
Price: 9.99 CAD
Availability: InStock

Sale Sold out

Bushy upright Night Silence dahlia clump standing approximately 90 cm above bronze-tinged dark green foliage

Dormant tuber Asteraceae

Lilac-pink and burgundy decorative dahlia

Van Noort

From bulb to bloom

Common nameNight Silence decorative dahlia

FamilyAsteraceae

GenusDahlia

SpeciesHorticultural hybrid

CultivarNight Silence

Bulb typeRacine tubéreuse de dahlia

Botanical nameDahlia

Quantity per pack1 No1 tuber

Bulb sizeNo 1

‘Night Silence’ Dahlia (Dahlia × hortensis) forms a bushy upright clump approximately 90 cm tall and 50 cm wide. Fully double decorative flowers combine smoky lilac pink with burgundy-red reverses and centres, sometimes brightened by a soft yellow hint. Serrated bronze-tinged dark green foliage reinforces this twilight palette. From July until the first frost, Van Noort’s No. 1 tuber produces stems suited to borders, containers, and arrangements. The decorative form retains a full flowerhead, while contrasting petal undersides appear whenever wind or opening changes their orientation. RHS records this accepted cultivar and recommends it for borders, pots, containers, and cut flowers.

Plant the tuber in spring after the final frost when soil has warmed and drained. Lay it 10 cm deep with its bud facing upward in fertile, humus-rich soil that remains moist yet drains freely. Leave approximately 50 cm around the crown and install discreet support at planting. Water sparingly before emergence, then deeply at soil level whenever the surface begins to dry. Pinch the young shoot between 20 and 30 cm to encourage several branches. Incorporate mature compost, then apply moderate fertilizer richer in potassium as buds develop. Avoid standing water, excessive nitrogen, and repeated irrigation over flowers. Maintain open airflow during humid summer weather.

Place Night Silence beside a path to observe lilac, burgundy, and bronze nuances in gentle light. Pair it with white gauras, blue salvias, chocolate cosmos, cream yarrows, and coppery grasses. Harvest stems early in the morning when flowerheads are fully open, then remove faded flowers regularly to renew buds. Highly double blooms provide little accessible pollen, so include nearby simple flowers for useful insects. Watch for slugs, aphids, earwigs, and spider mites while maintaining generous airflow. In cold Canadian climates, lift the tuber after the first frost, dry its surface, label it, and store it somewhere cool, dry, dark, and frost-free until spring. Inspect stored material monthly.

Light and life cycle

In the garden

Exposure: Full sun
Life cycle: Tender perennial grown as an annual in cold climates
Hardiness: Zone 8; lift the tuber in colder regions

Planting and establishment

Planting guide

Planting & establishment

Planting depth

10 cm (4 po)

Spacing / density

50 cm (20 in.) between plants

Establishment temperature

Sol à environ 16 °C ou plus

Rooting time

Variable selon la chaleur du sol et les conditions de culture

Planting period

Printemps, après les derniers gels

Propagation

Division of a tuber carrying a viable bud

Growing method

Plantez après les derniers gels au soleil, dans une terre fertile et bien drainée. Tuteurez au besoin et conservez la souche hors gel pendant l’hiver.

Soil and care

Soil & care

Soil pH

Slightly acidic to neutral

Moisture

Maintain even soil moisture without saturation during active growth. Large double flowers become heavy after rain; good air circulation, 50 cm spacing, and support reduce breakage and slow drying. Never let thick mulch touch the crown. During storage, keep a cool dry atmosphere that prevents both extreme shrivelling and rot.

Minimum temperature

5 °C (41 °F)

Care level

Moderate

Watering

Régulier pendant la croissance, sans détremper le sol; arrosez au pied lorsque la surface sèche.

Soil type

Fertile, meuble et bien drainé

Fertilization

Incorporate mature compost before planting. From active growth, use balanced fertilizer low to moderate in nitrogen, then favour a potassium-richer formula as buds form. Follow labelled rates and water afterward. Excess nitrogen produces soft stems, abundant leaves, and fewer flowers. Stop feeding several weeks before autumn lifting.

Seasonal care

In spring, inspect the tuber, prepare soil, plant after frost, and install support before stems become fragile. Pinch young shoots to branch the clump. In summer, water deeply, tie with soft material, feed moderately, and remove faded flowers regularly. Harvest stems early in the morning using clean tools. Monitor slugs, aphids, earwigs, spider mites, and mould without needlessly treating neighbouring flowers. In autumn, wait until frost blackens foliage, cut stems to 10 or 15 cm, lift the tuber without injury, and let its surface dry. Label Night Silence clearly. In winter, store it somewhere cool, dry, dark, and frost-free. Inspect monthly, remove soft tissue, and prevent both condensation and complete desiccation. The upright clump reaches about 90 cm and benefits from discreet staking in windy places. Full sun and fertile humus-rich fresh drained soil support sturdy stems. Feeding moderate in nitrogen and richer in potassium accompanies bud formation. Pinching branches young shoots and removing faded flowerheads extends flowering. In colder Canadian regions, the tuber must be lifted after frost and stored somewhere cool and frost-free. Double flowers suit arrangements and borders but provide little food for pollinators. Water deeply at the base when the surface dries without saturating the crown.

Growing in containers

Container growing

Recommended pot size

at least 45 cm (18 in.) in diameter and depth

Use a stable container at least 45 cm wide and deep with numerous holes. Fill it with rich potting mix amended with compost and drainage material. Set one tuber 10 cm below the surface and immediately install a central stake or discreet cage. Keep the pot in full sun protected from strong wind. Water deeply whenever the upper centimetres dry and always empty the saucer. Feed moderately during growth, then emphasize potassium from bud formation. Pinch young shoots and remove faded flowers. Rotate the container regularly for balanced growth. After the first frost, cut stems, let the mix dry slightly, and remove the tuber for cool dry frost-free storage until spring. The upright clump reaches about 90 cm and benefits from discreet staking in windy places. Full sun and fertile humus-rich fresh drained soil support sturdy stems. Feeding moderate in nitrogen and richer in potassium accompanies bud formation. Pinching branches young shoots and removing faded flowerheads extends flowering. In colder Canadian regions, the tuber must be lifted after frost and stored somewhere cool and frost-free.

Growth and flowering

Size, flowering & harvest

Mature height

Environ 90 cm (35 po)

Width / spread

Environ 50 cm (20 po)

Flower color

Lilac pink with burgundy-red reverses and centres plus a yellow hint

Foliage color

Green

Foliage type

Deciduous after frost

Growth rate

Fast

Growth habit

Tall upright clump

Fragrance

Parfum non marqué

Bloom period

Fully double Night Silence flowers are very large and repeat from midsummer until the first frost. Broad lilac pink and burgundy flecked petals form full, balanced, luminous Ball blooms. Cut faded flowerheads above a leaf pair to renew buds. Support and good airflow protect this delicate texture after rainfall. This attention preserves vigour and the quality of its large lilac pink and burgundy flecked flowers.

Harvest

July to October. Cut fully open flowers for the best vase life.

Garden companions

Garden associations

Companion plants & uses

Companion plants

Pair Night Silence with blue salvias, purple verbenas, white gauras, chocolate cosmos, sweet alyssum, and bronze grasses sharing sun and drained soil. Airy silhouettes and simple flowers highlight rounded decorative flowerheads while providing insects with more accessible resources. Keep 50 cm around the tuber and avoid highly aggressive roots or plants requiring constantly dry ground. This attention preserves vigour and the quality of its large lilac pink and burgundy flecked flowers.

Other recommended plants

Associez-le à des gauras blancs, des sauges bleues ou des graminées légères au soleil.

Garden use

Place Night Silence in the middle of a sunny border before bronze grasses and behind lower plants. Install support at planting so it disappears within foliage. Nearby, use blue salvias, purple verbenas, white gauras, chocolate cosmos, and sweet alyssum whose simple forms contrast with highly double blooms. Repeat several lilac pink and burgundy flecked or cream tones farther through the bed to connect the scene without making it heavy. In a cutting garden, leave enough access to harvest stems without breaking neighbours. Pinch the clump early to obtain several flowering branches. Open-flowered plants provide pollen and nectar because Night Silence remains mainly ornamental. In autumn, lift the tuber before deep soil freezing and label it clearly so the same palette can be rebuilt the following spring. The upright clump reaches about 90 cm and benefits from discreet staking in windy places. Full sun and fertile humus-rich fresh drained soil support sturdy stems. Feeding moderate in nitrogen and richer in potassium accompanies bud formation. Pinching branches young shoots and removing faded flowerheads extends flowering.

Frequently asked questions

When should Night Silence dahlia be planted?

Plant Night Silence in spring after the final frost when soil has warmed and no longer remains saturated. Lay the tuber 10 cm deep with its bud upward, leaving approximately 50 cm around the crown. In cold regions, starting it indoors in a pot four to six weeks earlier advances growth, but acclimate the plant gradually before moving it outside. Water very sparingly before emergence to prevent rot, then increase moisture as shoots and roots become active. Install discreet support at planting and pinch the shoot between 20 and 30 cm to encourage several flowering branches. Check the soil surface before watering again outdoors.

Why do the petals show several colours?

Upper petal surfaces are lilac pink, while reverses and part of the centre carry burgundy-red tones; a small yellow hint may also appear. As flowers open, move in wind, or are viewed from the side, these surfaces reveal themselves differently. This variation is a normal Night Silence characteristic, not a sign of disease or deficiency. Place the clump beside a path and examine it in gentle light to appreciate the contrast. In arrangements, turn several flowerheads to display both lilac faces and burgundy reverses, creating layered depth without adding another focal flower. Compare freshly opened and mature blooms to see the complete progression.

Is Night Silence suitable for arrangements?

Yes. Sturdy stems and fully double decorative flowers around 10 to 12 cm bring warm colour and generous form to arrangements. Cut early in the morning when flowerheads are fully open because dahlias develop little after harvest. Use a clean tool, remove leaves that would sit in water, and immediately place stems in a cool bucket. Refresh vase water and recut ends regularly. Frequent harvesting combined with removing faded flowerheads prevents seed formation and encourages fresh buds until the first frost. Pair them with airy white or blue flowers to emphasize the lilac pink and burgundy gradient without making the arrangement visually heavy.

Can Night Silence grow in a container?

Yes. Its approximately 90 cm height suits a stable container at least 40 to 45 cm wide and deep with large drainage holes. Use fertile airy mix, plant the tuber 10 cm deep, and install discreet support. Keep the pot in full sun, water deeply when the upper few centimetres dry, and always empty its saucer. Feed moderately with additional potassium once buds form, pinch the shoot, and remove faded flowers. Rotate the container for balanced growth. Before frost, lift the tuber and store it somewhere cool, dry, dark, and frost-free until the following spring. Check drainage after every heavy rain.

How should Night Silence be overwintered in Canada?

After the first frost blackens foliage, cut stems to 10 or 15 cm. Lift widely around the crown with a fork to avoid injuring tuberous roots, gently remove loose soil, and let the surface dry in a sheltered place. Store the Night Silence-labelled tuber in lightly insulating material somewhere cool, dry, dark, and frost-free. Inspect it monthly, remove any soft section with a clean tool, and increase ventilation if condensation appears. Replant only after frost risk has passed and the soil has warmed enough for active growth. Keep the accepted synonym with the label if desired. and inspect the crown before planting.

Wildlife and pets

Wildlife & precautions

Reported toxicity

Yes

Supporting wildlife

Highly double flowers hide almost all of their disc and offer little accessible pollen or nectar. Their value is mainly ornamental. Support wildlife by pairing this dahlia with salvias, sweet alyssum, verbenas, and other simple flowers. Avoid insecticides, provide shallow clean water, and maintain several flowering periods in the border.