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Dormant tuber
Asteraceae
Mixed giant double-flowered dahlias
‘Dinnerplate Mix’ Dahlia
Product code : VAN-350-120-01
Dinnerplate Mix contains four tubers producing giant dahlias approximately 100 cm tall. Large double flowers appear in a variable assortment of red, yellow, pink, purple, or orange without any guaranteed exact combination. Plant every tuber 10 cm deep and 50 cm from the next in full sun or very light partial shade. Fertile, humus-rich, fresh drained soil, support installed early, and removal of faded flowers sustain blooming from midsummer until frost. This mix suits borders, large containers, and generous arrangements.
- Quantity
- 4 tubers
- Exposure
- Full sun
- Life cycle
- Tender perennial grown as an annual in cold climates
- Hardiness
- Zone 8; lift the tuber in colder regions
Discover the plant
Common nameGiant Dinnerplate dahlia mix
FamilyAsteraceae
GenusDahlia
SpeciesHorticultural hybrids
CultivarDinnerplate Mix
TypeDormant tuber
Botanical nameDahlia
‘Dinnerplate Mix’ Dahlia (Dahlia × hortensis) Dinnerplate Mix combines four tubers of giant-flowered dahlias in an assortment of colours. Depending on the tubers packed, flowerheads may display red, yellow, pink, purple, or orange; the exact combination remains a horticultural surprise and every plant keeps its own colour. Large double blooms unfold on upright clumps approximately 100 cm tall and 50 cm wide. Green foliage creates a dense screen beneath flowering stems. From midsummer until the first frost, this Van Noort mix produces a spectacular succession for borders, large containers, and cutting gardens, with enough variation to create a complete display from one package.
Plant the four tubers in spring after the final frost once soil has warmed. Lay them horizontally 10 cm deep with buds facing upward, keeping 50 cm between every crown. Choose full sun or very light partial shade in fertile, humus-rich soil that remains fresh yet drains perfectly. Install a stake or support ring beside every tuber before stems lengthen. Water sparingly before emergence, then deeply at the base whenever the surface dries. Add compost, pinch young shoots to encourage branching, and use fertilizer moderate in nitrogen and richer in potassium from bud formation. Keep labels beside each plant if tracking individual colours matters.
Group the four dahlias as an island in the middle or back of a border, or distribute them through a cutting garden to discover their colours individually. Pair the mix with blue salvias, purple verbenas, white gauras, chocolate cosmos, and bronze grasses; airy forms balance the volume of Dinnerplate blooms. Harvest fully open stems in the morning and remove faded flowerheads continuously. Highly double flowers are mainly ornamental, so add simple open blooms for pollinators. In colder Canadian regions, after the first frost, cut stems, lift every tuber, let its surface dry, label the observed colour, and store it somewhere cool, dry, dark, and frost-free until spring.
Planting guide
Plant well.Grow beautifully.
Spacing / density
50 cm (20 in.) between plants
Best planting time
May to early June once soil is warm
Propagation
Division of a tuber carrying a viable bud
Growing method
After the final frost, prepare an area large enough for four clumps. Loosen soil to 30 cm, add compost, and mark four positions 50 cm apart. Lay every tuber horizontally 10 cm deep with its bud upward, immediately placing a stake or ring beside each crown. Close without compacting and water sparingly before emergence. When shoots reach 20 to 30 cm, pinch above a leaf pair. Water deeply at the base whenever the surface dries. Use fertilizer moderate in nitrogen and richer in potassium from bud formation. Tie with soft material, remove faded flowerheads, and note every clump’s colour. After frost, cut, lift, dry, label, and store the four tubers separately away from freezing. Each upright clump reaches about one metre and benefits from support installed early. Full sun produces the strongest stems, although light partial shade is tolerated. Fertile humus-rich fresh drained soil supports the long summer flowering season. Pinching branches shoots and removing faded flowers renews bud production. Four tubers create a generous border display and provide many stems for cutting.
Soil and care
The right care,at the right time.
Care level
Moderate
Watering
Before emergence, water only when soil becomes distinctly dry. Once stems establish, apply water deeply at the base whenever the surface begins drying, especially during bud development and heat. Let drainage work between applications. Avoid wetting double flowers and foliage in the evening because prolonged moisture favours spotting and grey mould. Dinnerplate Mix is a giant Dinnerplate dahlia with large double mixed colours flowers.
Soil type
Prepare fertile, humus-rich, loose, freely drained loam retaining even freshness during growth. Mature compost improves structure and supplies gentle reserves. On heavy soil, raise the planting slightly and incorporate coarse mineral material. Avoid hollows where water stands around the tuber, constantly wet substrates, and very dry ground that weakens stems and buds. Dinnerplate Mix is a giant Dinnerplate dahlia with large double mixed colours flowers.
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. Dinnerplate Mix is a giant Dinnerplate dahlia with large double mixed colours flowers. Narrow petals split at their tips and produce a highly textured feathery effect.
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. Dinnerplate Mix is a giant Dinnerplate dahlia with large double mixed colours flowers.
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 giant-scale, lift the tuber without injury, and let its surface dry. Label Dinnerplate Mix clearly. In winter, store it somewhere cool, dry, dark, and frost-free. Inspect monthly, remove soft tissue, and prevent both condensation and complete desiccation. Dinnerplate Mix is a giant Dinnerplate dahlia with large double mixed colours flowers. Narrow petals split at their tips and produce a highly textured feathery effect. The upright clump reaches about one metre 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.
Container growing
A garden,within reach.
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 four tubers 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. Dinnerplate Mix is a giant Dinnerplate dahlia with large double mixed colours flowers. Narrow petals split at their tips and produce a highly textured feathery effect. The upright clump reaches about one metre 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.
Bloom and dimensions
Its place,in your garden.
Mature height
100 cm (40 in.)
Width / spread
50 cm (20 in.) per clump
Flower color
Variable mix of red, yellow, pink, purple, and orange
Foliage color
Green
Foliage type
Deciduous after frost
Growth rate
Fast
Growth habit
Four tall upright clumps
Bloom period
The four clumps flower from midsummer until the first frost. Large double blooms may be red, yellow, pink, purple, or orange depending on the assortment actually packed. Size and form vary slightly among plants, strengthening the mixed effect. Remove faded flowerheads continuously and harvest fully open stems to encourage new buds.
Garden associations
In goodcompany.
Companion plants
Pair Dinnerplate Mix 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 giant Dinnerplate 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. Dinnerplate Mix is a giant Dinnerplate dahlia with large double mixed colours flowers. Narrow petals split at their tips and produce a highly textured feathery effect.
Frequently asked questions
Your questions,answered.
Which colours are included in Dinnerplate Mix?
The package provides a variable assortment of giant dahlias that may flower in red, yellow, pink, purple, or orange. Four tubers do not guarantee one exact colour each or the presence of every listed shade because this is a mix. Variability is part of its appeal. As each clump flowers, record its colour on a durable label. At lifting time, transfer the label to the matching tuber. You may then recreate the surprise effect or arrange a more precise palette the following year.
How should the four tubers be spaced?
Leave 50 cm between the centres of future clumps. Arrange them as a square, diamond, staggered line, or distribute them through separate areas. Loosen a sufficiently large zone, lay every tuber horizontally 10 cm deep, and install its support immediately. Do not crowd plants for a denser effect because mature foliage fills the space and air must circulate around large flowers. Keep discreet access for watering at the base, removing faded flowerheads, and harvesting stems.
Does every plant need support?
Yes. Every clump reaches approximately 100 cm and carries very large double flowers that become heavy after rain or in wind. Place a stake, ring, or cage beside every tuber at planting so the crown is not pierced later. Use broad soft ties, check them during growth, and loosen when needed. Pinching shoots at 20 or 30 cm creates a more branched plant, but it does not completely replace support in an exposed position.
Can all four dahlias be grown in containers?
Yes, but use four separate containers or one exceptionally large planter. Every plant needs approximately 45 cm of width and depth, fertile drained mix, and sturdy support. Keep pots in full sun or light partial shade, water deeply when the surface dries, and always empty saucers. Feed moderately, pinch shoots, and remove faded flowers. Containers increase cold exposure; after the first frost, remove tubers, dry them, label their colour, and store them somewhere cool, dry, dark, and frost-free.
How should the four tubers be stored?
After frost blackens foliage, cut stems to 10 or 15 cm. Lift every crown with a fork placed away from tuberous roots, gently remove loose soil, and let the surface dry. Attach a label stating Dinnerplate Mix and, when known, the plant’s colour. Store tubers separately in lightly insulating material somewhere cool, dry, dark, and frost-free. Inspect monthly, remove soft tissue with a clean tool, and increase ventilation if condensation appears. Replant only after the final frost.
Wildlife and pets
Life,around your plants.
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.