Why does Violgo Pepper turn lilac before turning purple — what causes this colour?

Violgo (Violoncello) pepper owes its unusual colour to anthocyanins — the same pigment family responsible for the purple-blue colour of blueberries, red cabbage, and aubergines. Anthocyanins are pH-sensitive: in acidic conditions they appear red, in neutral conditions purple-blue, in alkaline conditions greenish. In Violgo pepper, anthocyanins accumulate in the skin as the fruit develops, producing the bright lilac at technical maturity. As the fruit continues towards full biological ripeness, the underlying yellow pigments (carotenoids) become more prominent, mixing with the fading anthocyanins to produce the characteristic yellow-brown-purple streaked final colour. The full spectrum — from green through lilac to streaked purple — is visible simultaneously on a single plant carrying fruits at different stages.

What does Violgo Sweet Pepper taste like?

Violgo is described as 'very sweet' — a German breeding selection specifically bred for sweetness and high sugar content. The flesh is juicy with a 7–8 mm wall thickness, giving good body without being watery. The sweetness is particularly pronounced at the lilac technical maturity stage; fully ripe fruits with the streaked purple-yellow colour are even sweeter and slightly more complex in flavour. At both stages, bitterness is absent — the absence of capsaicin (Scoville 0) combined with high sugar content makes Violgo one of the sweeter varieties among European breeding selections.

Why does Violgo need a day/night temperature differential during seedling growth?

The instruction to keep seedlings at 26–28°C during the day but 10–15°C at night — a difference of 11–18°C — replicates natural Mediterranean climate conditions where large day/night temperature swings are normal. This diurnal temperature range produces compact, stocky, well-developed seedlings with strong root systems, as opposed to the thin, leggy, poorly-developed seedlings that result from uniformly warm conditions. The night cool-down also helps prevent damping-off (stem rot at soil level caused by Pythium and Botrytis) which is more common in seedlings grown at consistently warm temperatures.

Why is Violgo called Violoncello?

Violoncello (Italian: 'small cello') is the full varietal name, of which Violgo is an abbreviated trade name. The name was chosen for the fruit's shape — the elongated cuboid form with slightly tapered ends resembles the body of a violin/cello family instrument — and for the violet (viola/violoncello) colour at technical maturity. The name reflects the German-Italian naming tradition common in European specialty pepper breeding. Violoncello-type peppers are a recognised colour variant within the Italian/German sweet pepper breeding tradition, valued for the visual drama of the lilac colour on the plant and in the kitchen.

Does Violgo Pepper need staking?

No — the variety description explicitly states no staking required. Violgo is a compact bush to 50 cm with a naturally sturdy, self-supporting habit. This is a practical advantage for outdoor growing and polytunnel cultivation where individual staking of each plant is time-consuming. In very exposed positions, a general windbreak or low support may be beneficial, but the plant's compact structure distributes weight well and withstands normal wind exposure without support.

How many seeds in a pack — why only 5 PCS?

Violgo Sweet Pepper is a specialty German breeding variety with 5 seeds per pack. Unlike standard commercial varieties mass-produced in large quantities, specialty European breeding selections are offered in smaller seed counts reflecting the artisanal production scale and genuine genetic quality of the variety. Five pre-germinated pepper seeds — with proper treatment (50°C soak, pre-germination in damp cloth) as described in this guide — should produce 4–5 healthy seedlings. For a home grower or small allotment, 4–5 Violgo plants produce a substantial harvest of lilac sweet peppers through summer and autumn.

German Variety · Lilac → Purple-Streaked · 7–8 mm Walls · No Staking

How to Grow Violgo Sweet Pepper from Seed
Violoncello Pepper · German Breeding · Bright Lilac at Harvest · No Staking Required

A German specialty sweet pepper unlike any other — fruits ripen through bright lilac to yellow-brown-purple with streaks. No standard red or yellow pepper looks like this on the plant or on the plate. Juicy and very sweet, 12 cm cuboid, 7–8 mm walls. Compact 50 cm bush, no staking required. Ideal for stuffing, fresh salads, and canning.

Published March 10, 2025

LilacUnique colour — anthocyanins

50 cmBush · no staking needed

7–8 mmWall thickness · juicy

GermanyVioloncello breeding origin

Violgo Violoncello pepper bright lilac purple cuboid fruits plant harvest

SALE
−40%

SKU: PE224 · Oreshka Seeds

Violgo Sweet Pepper — Violoncello

5 PCS organic seeds · German specialty variety · Solanaceae · Mid-early

€5.00 €8.33

5 organic seeds per pack · Ships worldwide in 2–3 days

Detailed Buy

The variety

What is Violgo Pepper — and Why Does it Turn Lilac?

Violgo (full name: Violoncello) is a mid-early, high-yielding sweet pepper variety from Germany, producing cuboid fruits 12 cm long and 6 cm in diameter with a distinctive two-stage colour development found in no standard red or yellow pepper variety. At technical maturity — when the fruit has reached full size and is ready to eat — the colour is bright lilac-violet. As it continues to full biological ripeness, it transitions through yellow-brown-purple with characteristic streaks and surface cracks that develop in the skin.

The plant is compact, reaching 50 cm, with no staking required — a practical advantage for allotment and home garden growing. The 7–8 mm wall thickness gives Violgo the body needed for stuffing (the cuboid shape is ideal for stuffed pepper dishes) and the juicy, very sweet flesh makes it outstanding for fresh eating and canning. Suitable for both greenhouse and open-ground cultivation.

 The lilac colour — anthocyanins in sweet pepper: Violgo's lilac colouration at technical maturity is produced by anthocyanins — the same pigment family responsible for the purple-blue of blueberries and red cabbage. In Violgo, anthocyanins accumulate in the fruit skin as it develops, producing the distinctive bright lilac. As full ripeness approaches, underlying yellow carotenoid pigments become more prominent, mixing with the fading anthocyanins to create the yellow-brown-purple streaked final colour. A single Violgo plant in late summer displays the full colour sequence simultaneously: green unripe fruits, bright lilac technical maturity, and streaked purple-yellow fully ripe fruits — a visual display unique among European sweet pepper varieties.
  

Oreshka Seeds — Expert Note

Organic specialty German variety. 5 seeds. Pre-germinate in damp cloth at 20°C before sowing. Day/night temperature differential essential for strong seedlings. About our collection →

Violgo pepper lilac technical maturity colour cuboid shape plant

Violoncello pepper purple-yellow streaked fully ripe colour change

Violgo pepper cut open juicy sweet flesh 7mm wall thickness

Violgo sweet pepper stuffed lilac cuboid shape ideal stuffing

Violoncello German pepper bush 50cm compact no staking outdoor

Violgo pepper salad fresh lilac purple colour striking plate

Violgo pepper seedling pre-germination damp cloth 20 degrees treatment

Quick facts

Violgo Pepper at a Glance

ColourLilac → yellow-brown-purple

Fruit12 × 6 cm · cuboid · up to 100 g

Bush50 cm · compact · no staking

OriginGermany · Violoncello variety

LightFull sun · greenhouse or outdoor

Walls7–8 mm · juicy · very sweet

Growing guide

How to Grow Violgo Pepper from Seed — Step by Step

01
Seed Treatment — 50°C Soak Then Pre-Germinate
Step 1: soak seeds in water at exactly 50°C for 5–6 hours (use a thermos to maintain temperature). Step 2: wrap soaked seeds in a damp cloth at 20°C for 2–3 days until root tips appear. Only sow pre-germinated seeds showing a white root tip — this ensures uniformity and significantly improves the germination rate from 5 specialty seeds per pack.
02
Sow 10–12 Weeks Before Last Frost
Peppers need the longest indoor lead time of common vegetables. Sow pre-germinated seeds 1 cm deep in individual 7–9 cm pots at 22–26°C. Handle carefully — the emerging root tip is fragile. Once shoots appear, raise daytime temperature to 26–28°C. Night temperature must drop to 10–15°C — this diurnal range produces compact, strong seedlings and prevents damping-off.
03
12+ Hours Light Daily — Feed Twice
Minimum 12 hours of light per day — grow lights are needed in northern winters and springs. When the first pair of true leaves appears: first dilute balanced fertiliser feed. When the second pair appears: second feed. Continue feeding every 2 weeks. Water with lukewarm settled water — cold water shocks pepper roots. Keep moisture moderate — never waterlogged.
04
Harden Off and Plant Out at First Bud Stage
Begin hardening when seedlings form first buds (not flowers) and outdoor air temperature reaches 15–17°C. Never expose to below 13°C during hardening. Plant in final positions — 40–50 cm spacing, full sun. Violgo requires no staking. Suitable for greenhouse and open ground equally.
05
Watch for Colour Change — Harvest at Lilac Stage
Fruits develop green first, then transition to bright lilac at technical maturity — this is the primary harvest window. Lilac-stage fruits are firm, full-sized, juicy, and very sweet. For more concentrated sweetness and the distinctive yellow-brown-purple streaked appearance, leave on the plant to full ripeness. Regular harvesting encourages continued fruit set through the season.
06
Use — Stuffing, Fresh, Canning
The cuboid shape and 7–8 mm thick walls make Violgo ideal for stuffed peppers — it holds its shape well during cooking. The colour is striking in raw salads. For canning, harvest at the lilac stage for best colour retention. The very sweet flavour (absent bitterness, zero heat) makes Violgo suitable for all uses including preserving in oil, pickling, and roasting where the colour deepens to a beautiful burnished violet.

Pro Tip — From the Oreshka Collection

The 50°C seed soak is critical but temperature-sensitive — too cold (below 45°C) and the pathogen-killing effect is lost; too hot (above 55°C) and seed viability is damaged. Use a kitchen thermometer and a small thermos flask: bring water to 52°C (it will drop to 50°C as you add seeds and close the thermos), seal, and leave for 5–6 hours without opening. The thermos maintains temperature far better than a bowl on a heat mat. After treatment, seeds are ready for the damp cloth pre-germination stage. With this two-stage preparation — thermal treatment plus pre-germination — you will sow only seeds that are confirmed viable and ready to grow, which matters significantly when the pack contains only 5 seeds.

Compare

Violgo vs. Californian Wonder vs. Kapia

Feature	Violgo · Violoncello PE224 · Oreshka Seeds	Californian Wonder Standard blocky sweet pepper	Kapia Romanian thin-walled roasting
Colour	Lilac → purple-streaked · unique	Green → red standard	Green → red · thin
Wall thickness	7–8 mm · thick · juicy	5–6 mm · medium	3–4 mm · thin · roasting
Shape	Cuboid · ideal for stuffing	Blocky · 4-lobed	Elongated · pointed
Bush height	50 cm · no staking	60–80 cm · staking helpful	60–70 cm · staking needed
Sweetness	Very sweet · German bred	Sweet · standard	Very sweet · for roasting
Best use	Stuffing · fresh · salads	Stuffing · fresh · general	Roasting · ajvar · drying

Avoid these

Common Mistakes When Growing Violgo Pepper

Skipping the 50°C seed soak

The warm soak is recommended for both pathogen elimination and seed coat softening. With only 5 seeds per pack, skipping it and losing 1–2 seeds to pathogens or slow germination is a disproportionate loss. Use a thermos for precise temperature maintenance — the 5-minute preparation is worthwhile for the pack value.

Uniform warmth day and night for seedlings

Keeping seedlings at 24°C around the clock produces leggy, poorly-developed plants. The 26–28°C day / 10–15°C night differential is not optional — it is the cultural practice that produces compact, stocky, vigorous Violgo seedlings. Use a heated propagator on a timer or move seedlings to an unheated room at night.

Planting out before 15°C air temperature

Peppers planted into cold soil or exposed to temperatures below 13°C suffer cold shock that sets growth back significantly — sometimes by 3–4 weeks. Wait until air temperature consistently reaches 15–17°C before outdoor planting. Hardening off must never include exposure to temperatures below 13°C.

Harvesting before the lilac colour develops

A common mistake is harvesting Violgo at the green stage (as one might with a standard pepper). The unique value of this variety is the lilac colour — allow full colour development before harvesting. Green Violgo fruits are edible but forfeit the visual drama and miss the sweetness peak that develops with the colour change.

FAQ

Frequently Asked Questions

Why does Violgo Pepper turn lilac — what causes this colour?

Anthocyanins — the same pigment family as blueberries and red cabbage — accumulate in Violgo's skin during development, producing the bright lilac at technical maturity. As full ripeness approaches, underlying yellow carotenoids become more prominent, mixing with fading anthocyanins to create the yellow-brown-purple streaked final colour. A plant in late summer shows the full sequence simultaneously: green unripe, lilac, and streaked purple-yellow fully ripe.

What does Violgo taste like?

Very sweet — a German breeding selection bred specifically for sweetness. Juicy, 7–8 mm walls, zero heat (Scoville 0). Particularly sweet at the lilac stage; fully ripe fruits are even sweeter with added complexity. No bitterness. Outstanding for fresh eating, stuffing, and canning.

Why does it need day/night temperature differential?

26–28°C day / 10–15°C night replicates Mediterranean natural growing conditions. The large temperature swing produces compact, strong seedlings with good root systems, as opposed to the leggy, weak growth produced by uniform warmth. It also reduces damping-off risk. Use a heated propagator on a timer, or move seedlings to a cool room at night.

Why is it called Violoncello?

Violoncello (Italian: 'small cello') reflects both the elongated cuboid fruit shape — resembling a string instrument body — and the violet (viola) colour at maturity. A naming tradition common in German-Italian specialty vegetable breeding. Violgo is the shortened trade name. The Violoncello type is a recognised colour variant within European sweet pepper breeding valued for visual drama in the kitchen.

Does Violgo need staking?

No — the variety explicitly requires no staking. Violgo is a compact 50 cm bush with a naturally self-supporting structure. Only in very exposed, windy positions might a general windbreak or low support be beneficial. The compact habit makes it practical for open ground, containers, and polytunnels without individual stake installation.

Why only 5 seeds in the pack?

Violgo is a specialty German breeding variety produced at artisanal scale. Five pre-treated, pre-germinated seeds — with proper 50°C soak and damp-cloth pre-germination — produce 4–5 healthy plants. For a home grower, 4–5 Violgo plants produce a substantial harvest of lilac sweet peppers through summer. The small pack count reflects variety quality and authentic breeding provenance rather than commercial mass-production.

The Only Lilac Sweet Pepper — German Violoncello, No Staking, Very Sweet

5 organic seeds · Cuboid 12 cm fruits · 7–8 mm walls · Lilac → purple-streaked · Stuffing & fresh · Ships worldwide

Buy Seeds — €5.00 → Sale −40% · SKU PE224 · 5 PCS Organic · Violgo Violoncello Pepper · Oreshka Seeds

How to Grow Violgo Sweet Pepper from Seed Violoncello Pepper · German Breeding · Bright Lilac at Harvest · No Staking Required