Set of 6 packets of organic chard seeds with red, yellow and white stems

Rosette of a leafy vegetable with small rounded leaves and a pile of its seeds, example of a fast-growing crop

Several lettuce varieties laid side by side, batavia, romaine and oak leaf

Batavia lettuce in a rosette, green leaves edged with red, with a pile of its seeds

Seedling diagram for lettuces and chard: seed barely covered, germination in 4 to 10 days

Organic lettuce and chard seed collection

Name: Organic lettuce and chard seed collection
Brand: ZenGreens
SKU: a3123049-c293-47bc-8993-e7b4bdb09f77
Availability: InStock

21,90 €

7,30 € × 3 with no fees Klarna.

Spring lettuces, summer batavias, lamb's lettuce and spinach for winter: these collections of 6 to 20 organic varieties of salad leaves or chard, one per packet, are sown in successive batches from February through to September.

Ref. a3123049-c293-47bc-8993-e7b4bdb09f77·Vegetable seeds

Assortment : Blette 6

Salades 10

Salades 20

Blette 6

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The summary

What you receive: a gift box of organic salad and leafy vegetable seed packets, one variety per packet.
The varieties: romaine, oak leaf, batavia, rocket and lamb's lettuce on the salad side; chards Rhubarb and Bright Yellow on the chard side.
When to sow: February to September, in succession.
Sowing depth and germination: no more than 0.5 cm, then 3 to 7 days between 10 and 20 °C.
What comes next: sowing in a seedling tray then transplanting, or direct sowing followed by thinning.
Salad or chard: lettuce is cut all at once; chard is harvested leaf by leaf over 4 to 6 months.

Boxes of seasonal salad leaves and colourful chard, seedlings staggered from February to September

Lettuces and chard are among the fastest-growing crops in the kitchen garden and among the most suited to successional sowing. The box of 10 lettuces includes romaine, oak leaf, iceberg, batavia, cut-and-come-again lettuce, rocket, lamb's lettuce, and spinach; the chard selection brings together Rhubarb with its vivid red stems, bright golden Bright Yellow, a multicoloured mix, and a chard-spinach variety, all belonging to the species Beta vulgaris.

🥬 One lettuce per season

Each type of lettuce has its own sowing season. Spring lettuces, tender and fast-growing, bolt at the first sign of heat. Summer batavias and oak-leaf varieties handle drought better and delay bolting by several weeks. Lamb's lettuce and spinach, meanwhile, tolerate cold and take over from autumn through to spring, in open ground or under fleece. No single variety covers the whole year, whereas a mixed selection lets you choose whichever suits the month you are sowing.

🌈 Chard can be harvested continuously

Chard is managed quite differently from lettuce. A single plant can be harvested leaf by leaf for 4 to 6 months, by removing the outer stems and leaving the heart to keep producing: you therefore never cut the whole plant at once. Coloured-stem varieties, such as red Rhubarb or yellow Bright Yellow, are grown in exactly the same way as the white types and require no special care; the colour is in the stem and fades during cooking. This species is also far more tolerant of summer heat than lettuce, making it the go-to leafy vegetable for the height of summer.

Above 25 °C, lettuce germinates poorly

Heat is the main obstacle for seedlings sown in July and August, regardless of seed quality. Above 25 °C, many lettuce varieties enter dormancy and fail to germinate, a phenomenon known as thermo-inhibition. Sow in shade during the height of summer, water with cool water, or place the seed tray in the refrigerator for 2 days before bringing it out.

Germination sponges for soilless growing

These species are among the easiest to grow hydroponically, thanks to their short cycle and shallow root system. Germination sponges hold the seed and then slot straight into a basket without disturbing the roots. Our guide on what to grow in hydroponics covers cultivation season by season.

Rhubarb

Chard with carmine red stems and dark green foliage, as ornamental as it is productive as a border plant.

Bright Yellow

Golden-yellow stems, very tender, cook them separately from the leaves, which need less time.

Chard mix

A packet blending several chard stem colours, handy for a single mixed row.

Surface sowing

Lettuce seed germinates in light: it should be barely covered, no more than 5 mm deep.

🔄 Sowing in successions

With these species, the most reliable method is successional sowing. Rather than sowing an entire row in April, sow a quarter of a row every 2 or 3 weeks from March to September, switching variety according to the season. This gives you a continuous harvest instead of everything coming at once in the same week, and within a single year you will discover which variety tolerates the heat and which holds up in the cold in your area. Allow 3 to 7 days for germination depending on temperature, then transplant at the 4 true-leaf stage for lettuces grown as hearting types.

🪣 Watering and bitterness

A lettuce that is short of water turns bitter and bolts more quickly, and once the flower stem has gone up, bolting is irreversible. Watering should therefore be regular rather than copious, ideally in the morning and at the base, as wet foliage in the evening encourages downy mildew. A fine mulch between the rows limits evaporation and saves you every other watering session in summer. Chard, on the other hand, tolerates irregular watering far better, making it the natural fallback when holidays fall at an awkward time.

🔁 Save and re-sow

Stored dry, cool, and away from light, lettuce seeds retain their germination capacity for around 5 years and chard seeds for around 6 years, meaning a box of 20 varieties can be sown without waste over several seasons. Lettuce is also well suited to saving your own seed, as its flowers are self-pollinating: a few metres between two varieties is sufficient in a temperate climate. Chard, by contrast, is biennial and cross-pollinates with beetroot, so only one of the two should be allowed to flower at a time. Our product page for Laitue Gloire du Dauphiné features a variety sold individually.

Technical specifications

The essentials

What you sow: Organic seeds for salads and leafy vegetablesOne variety per paper herb sachet, labelled with its name.
The varieties in the kit: Romaine, oak leaf, iceberg, batavia, rocket, lamb's lettuce; Rhubarb and Bright Yellow chardLettuces in the 10- and 20-piece sets, chard in the 6-piece set.
Sowing period: February to September, in successionsWindow for mainland France, to be adjusted depending on the region.
Seedling depth: 0.5 cmEach sachet states the exact value of its variety.
Germination temperature: 15 à 20 °CGrow medium temperature, not room temperature.
Germination time: 3 to 4 daysApproximately 7 days in soil at 10 °C.

To budget for separately

A fine seedling compost: Germination cubes or plugsLettuce seed germinates in light and should be barely covered.
A mulch layer between the rows: A few centimetresIt reduces evaporation and saves you every other watering in summer.

In the box

1 box of organic salad and leaf vegetable seeds, one variety per seed paper sachet
1 label with common name and Latin name on each sachet

Variety names and packaging: ZenGreens sets, official photographs retrieved on 07/10/2026. Germination times by temperature: OSU Extension table (Oregon). Storage and crossing: DIYseeds lettuce and beetroot data sheets.

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delivery time

The kit, being light, is dispatched on its own or with the rest of your order. Exact shipping costs and final delivery times are displayed at checkout once your address has been entered. Outside the European Union, import duties and taxes remain the responsibility of the recipient.

Frequently asked questions

8 questions

6 key questions, 8 in the detailed view

Which lettuces and chards are included in the kits?

Set	Example varieties
Salades 10	Romaine, oak leaf, iceberg, batavia, cut-and-come-again lettuce, rocket, lamb's lettuce, spinach
Salades 20	The same types, plus Merveille des Quatre Saisons lettuce and a mix of Asian salad leaves
Blette 6	Rhubarb, Bright Yellow, multicolour mix, chard-spinach

Each packet bears the name of its variety and contains one variety only.

Why do my lettuces bolt so quickly?

How long does a lettuce take to germinate?

What is the chard-spinach in the collection?

Can lettuces be grown in aquaponics?

How do you save your own lettuce seeds?

Is rocket grown the same way as lettuce?

Should lamb's lettuce be sown alongside other salad leaves?

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Organic lettuce and chard seed collection

The summary