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Tuber
Asteraceae
Giant Dahlia 'Vassio Meggos' (Dahlia)
Dahlia × pinnata
Vassio Meggos grows to 120–135 cm (47 to 53 in.), producing immense Dinnerplate blooms in a nuanced lavender-pink with hints of lilac and purple. Their wide, wavy petals curl back towards the stem, creating a deep flower head 20–23 cm (8–9 in.) across. A vigorous tuber provides strong stems suitable for the back of borders, exhibitions, and large bouquets. Early staking and winter storage indoors protect this spectacular presence. Its late bloom provides sustained presence during the second half of summer when many perennials are fading. Deep soil, consistent moisture without saturation, and moderate potassium application help the stems maintain their vigor. Nearly open flowers can be harvested for arrangements where a single head is enough to create the main volume.
- Quantity
- 1 tuber
- Exposure
- Sun
- Life cycle
- Tender perennial
- Hardiness
- Zone 8
Discover the plant
Common nameGiant Dahlia 'Vassio Meggos'
FamilyAsteraceae
GenusDahlia
TypeTuber
Botanical nameDahlia × pinnata
Giant Dahlia ‘Vassio Meggos’ (Dahlia). Giant Dahlia ‘Vassio Meggos’ (Dahlia) produces immense, decorative Dinnerplate flowers in lavender-pink, nuanced with lilac and purple. Their broad, slightly undulating petals curve elegantly towards the stem, giving the flower head an almost spherical depth. Flowers typically reach 20 to 23 cm (8 to 9 in) on an upright clump of 120 to 135 cm (47 to 53 in). Originating as a color sport of the famous ‘Spartacus’, this RHS trial-recommended cultivar maintains its vigor and spectacular form. From mid-summer until the first frost, a No1 Van Noort tuber creates a remarkable focal point for the back of borders, displays, and large bouquets.
Plant the tuber in spring after the last frost, when the soil is warmed, fertile, humus-rich, and well-drained. Lay it about 10 cm (4 in) deep, eye facing up, in a location receiving at least six hours of sunlight, then allow about 50 to 60 cm (20 to 24 in) around the crown. Water sparingly before emergence, then deeply at the base when the surface begins to dry. Pinch shoots at 20 to 30 cm (8 to 12 in) to encourage branching. Mature compost and a moderate fertilizer richer in potassium support the buds. For a few particularly large exhibition flowers, selectively remove some lateral buds without exhausting the entire plant.
Place Vassio Meggos at the back of a border, where its lavender-pink flowers dominate without obscuring shorter plants. Dark blue sages, white gauras, purple verbenas, and silvery grasses enhance its cool nuances. Harvest stems when flower heads are almost open, use a stable vase, and protect the recurved petals during transport. Regularly remove faded flowers to prolong budding. The very double centers offer little accessible pollen; add single flowers for beneficial insects. After the first frost in Quebec, lift the tuber, dry its surface, label it, and store it in a cool, dry, dark, and frost-free place.
Planting guide
Plant well.Grow beautifully.
Planting depth
10 cm (4 in)
Best planting time
May to early June in Quebec, when the ground has warmed up
Propagation
Division of tubers with at least one viable bud
Growing method
After the last frost, place the Vassio Meggos tuber horizontally about 10 cm (4 in) deep in fertile, humus-rich, warm, and well-drained soil. Orient the eye upwards and leave 50 to 60 cm (20 to 24 in) around the crown. Choose full sun and a location protected from prevailing winds. Install a sturdy stake before growth begins to avoid damaging the roots later. Water lightly before emergence, then deeply at the base when the surface begins to dry. Pinch shoots back to 20 to 30 cm (8 to 12 in) to encourage branching and a longer flowering season. Incorporate mature compost, then use a potassium-rich fertilizer moderately during bud formation. To obtain a few particularly impressive flower heads measuring 20 to 23 cm (8 to 9 in), keep one vigorous stem and selectively remove some side buds; leave the other branches intact to maintain a long season. Gradually tie up the stems without constricting them. Remove faded flowers before seed formation, monitor for slugs, aphids, earwigs, and spider mites, and water in the morning so that the foliage dries quickly. After the first frost, lift the crown, dry it, label it, and store it in a cool, dry, and frost-free place.
Soil and care
The right care,at the right time.
Soil pH
Slightly acidic to neutral
Minimum temperature
5 °C (41 °F)
Care level
Moderate
Watering
Water regularly to keep the soil moist without overwatering. An organic mulch helps maintain constant moisture and reduces watering needs during hot periods. Before watering, check the moisture beneath the surface with your finger rather than following a fixed schedule. Recent rain, wind, and container cultivation can quickly alter watering needs.
Soil type
Prioritize humus-rich soil that retains moisture while allowing excess water to drain. Check drainage after rain: water should be able to leave the root area. Work the soil when it is dry to avoid compacting it. Adapt amendments to its actual texture. In containers, use appropriate potting mix and a pot with drainage holes. Keep these openings clear and avoid any accumulation of water in the saucer.
Fertilization
Compost at planting, then a potassium-rich fertilizer during flowering. This selection requires a sunny, warm, and sheltered location, as well as fertile soil that drains excess water quickly. In spring, the tuber is placed horizontally after the last frost, then growth accelerates when nights become mild. Deep watering maintains consistent moisture without soaking the collar. Mature compost nourishes the clump, while a.
Seasonal care
In the spring, inspect the Vassio Meggos tuber and replant only firm parts with a viable eye. Wait until the risk of frost has passed and the soil has dried out. Install a sturdy stake, enrich the area with mature compost, and place the crown about 10 cm (4 in) deep. During emergence, water sparingly to prevent rot. When stems reach 20 to 30 cm (8 to 12 in), pinch the tips to encourage multiple branches. In early summer, tie up new shoots, weed gently, and maintain regular moisture with deep watering at the base. Once buds form, fertilize moderately with a formula lower in nitrogen and higher in potassium. Disbud only a few stems if very large exhibition flowers are desired. In July, August, and September, harvest nearly open flower heads, remove faded flowers, check ties, and monitor for pests and diseases. Promptly remove damaged tissue and ensure good air circulation between leaves. After the first frost, cut back the stems, gently lift the crown, let its surface dry, then label Vassio Meggos. Store the tuber in a slightly insulated, cool, dry, dark, and frost-free environment. Check it monthly, remove any soft parts, and prevent extreme drying until spring. Keep ties loose.
Container growing
A garden,within reach.
Recommended pot size
Pot at least 40 cm (16 in.) in diameter and depth
Container growing requires planning for the necessary root volume and the plant's final height. Choose a stable pot with drainage holes and a suitable planting medium. Leave enough space to respect the recommended depth and spacing, rather than crowding plants to immediately fill the pot. Place the container in the indicated exposure and regularly check the humidity, especially in hot or windy weather. A pot is more exposed to temperature variations than a plant in the ground. Therefore, plan for an overwintering location compatible with the plant's needs and your region's climate from the outset. Plant in spring when all risk of frost has passed and the soil is sufficiently warmed. Choose a sunny spot, sheltered from strong winds, in fertile, well-drained soil. Arrange the tuberous roots with their crown and buds facing upwards, without breaking fragile connections. Install a stake at planting if support will be needed, to avoid damaging the roots later. Water sparingly at the start, then adjust watering to foliage growth. Consistently waterlogged soil around the tubers should be avoided, especially before the first shoots appear. Plan to bring the storage organs indoors for winter in Quebec to protect them from frost.
Bloom and dimensions
Its place,in your garden.
Mature height
120 cm (48 in)
Width / spread
50 cm (20 in)
Flower color
Pink lavender with lilac and purple undertones
Foliage color
Dark green
Foliage type
Lapsed
Growth rate
Quick
Bloom period
Spectacular bloom of very large double rose-mauve flowers from July until the first frosts. The flowers attract pollinators and have excellent vase life. Giant Dahlia ‘Vassio Meggos’ (Dahlia ‘Vassio Meggos’) produces immense decorative rose-lavender Dinnerplate flowers, nuanced with lilac and violet. The flowers generally reach 20 to 23 cm (8 to 9 in) on an upright clump of 120 to 135 cm (47 to 53 in). From mid-summer until the first frost, a No. 1 Van Noort tuber creates a remarkable focal point for the back of borders, displays, and large bouquets.
Harvest
July to October. Pick flowers early in the morning when they are fully open to ensure an excellent vase life. Continue to remove spent flowers to encourage further blooming.
Garden associations
In goodcompany.
Companion plants
To accompany Dahlia 'Vassio Meggos', you could consider cosmos, zinnias, or ornamental salvias. Choose companion varieties based on their height, flowering period, and the colors you wish to combine. Most importantly, ensure their sun exposure and water needs are suitable for the same location. Maintain enough distance so that leaves do not shade young shoots and to allow easy access to each plant for maintenance. These combinations are for creating the garden's aesthetic; they do not guarantee protection against pests or diseases. Adjust the arrangement after observing one growing season.
Frequently asked questions
Your questions,answered.
Why do Vassio Meggos' petals curl up?
Recurving is a recognized characteristic of the cultivar, reminiscent of its parent, Spartacus. As the flower opens, the broad, slightly undulating petals fold back towards the stem, giving the flower head unusual depth. This movement does not indicate that the flower is wilting. Instead, observe the firmness of the petals and the absence of browning. The shape becomes particularly spectacular when the flower head reaches 20 to 23 cm (8 to 9 in) and remains well-supported. Younger flowers may appear tighter, then gain amplitude as they expose more of their lilac hues. However, wind and rain can distort this architecture; therefore, early staking helps the cultivar express its natural silhouette without the stems bending.
How to plant the Vassio Meggos tuber?
After the last frost, plant the tuber about 10 cm (4 in.) deep in warm, fertile, humus-rich, well-drained soil. Orient the eye upwards, provide at least six hours of sunlight, and leave 50 to 60 cm (20 to 24 in.) around the crown. Immediately place a sturdy stake. Water sparingly before sprouting, then deeply when the surface begins to dry. Pinch back shoots to 20 to 30 cm (8 to 12 in.) to encourage branching. Incorporate mature compost and then fertilize moderately with a potassium-rich formula. Avoid moist depressions, frequent overhead watering, and excessive nitrogen. A light mulch applied after the soil warms will stabilize moisture without directly covering the crown.
How to get the biggest Vassio Meggos flowers?
Provide full sun, fertile soil, regular but not excessive moisture, and robust staking. After the initial pinching, select a few vigorous stems and remove only some side buds so that energy concentrates in the terminal bud. Do not perform this thinning on all branches if you also desire a long flowering period. A moderate fertilizer richer in potassium supports the buds; an excess of nitrogen primarily promotes foliage. Tie each selected stem with a soft tie and check the support after strong winds. Continue to water deeply while the flower head is developing, but never let the soil become waterlogged. The other branches can simply be pinched back and harvested to maintain regular production.
Is Vassio Meggos suitable for bouquets?
Yes, but their large flower heads demand careful handling. Harvest early in the morning when the blooms are nearly open, as dahlias progress little after cutting. Choose firm stems, protect the recurved petals, and use a heavy vase. Remove submerged leaves, re-cut the bases, and refresh the water regularly. A single flower can dominate a bouquet; pair it with finer elements that support its lavender and lilac hues. Keep the vase away from direct sunlight and ripe fruit, and immediately remove any damaged petals. Cool tones pair particularly well with blue salvias, white gauras, and silvery foliage. Avoid closed buds, which do not fully unfurl their shape after cutting.
How to overwinter *Vassobia megacarpa* in Quebec?
After the first frost has blackened the foliage, cut back the stems and carefully lift the crown without breaking the neck. Allow the surface to dry under cover, then label clearly Vassio Meggos. Store the tuber in a slightly insulating medium, in a cool, dry, dark, and frost-free place. Inspect it monthly, remove any soft parts, and prevent extreme desiccation until safe conditions return in spring. In spring, restart the crown's growth only when the risk of frost diminishes. To divide it, each section must retain a portion of the neck bearing a viable eye; an isolated tuberous root without an eye will not form a new shoot.
Wildlife and pets
Life,around your plants.
Supporting wildlife
The central florets can provide pollen to visiting insects. This selection requires a sunny, warm, and sheltered location, as well as fertile soil that drains excess water quickly. In spring, the tuber is placed horizontally after the last frost, then growth accelerates when nights become mild. Deep watering maintains consistent moisture.
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