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
Price: 25.0 USD
Availability: OutOfStock

$25.00

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

These organic seed sets contain, one variety per packet, either lettuces (romaine, oak leaf, batavia, rocket, lamb's lettuce) or chards such as Rhubarb and Bright Yellow. They are sown in succession from February to September, at a depth of 0.5 cm at most. Chard is then harvested leaf by leaf for 4 to 6 months.

Salads and chard are among the fastest crops in the vegetable garden and those that lend themselves best to successional sowing. The box of 10 salads includes romaine, oak leaf, iceberg, batavia, cut-and-come-again lettuce, rocket, lamb's lettuce and spinach; the chard box contains Rhubarb with bright red stems, Bright Yellow in golden yellow, a multicoloured mix and a spinach chard, all of the species Beta vulgaris.

🥬 One lettuce per season

Each type of lettuce has its own sowing season. Spring lettuces, tender and fast-growing, bolt as soon as the first warm weather arrives. Summer Batavia and oak-leaf lettuces cope better with dry conditions and delay bolting by several weeks. Lamb's lettuce and spinach, finally, tolerate the cold and take over from autumn to spring, in open ground or under fleece. No single variety ever covers the whole year, whereas an assortment lets you choose the one that suits the month in which you sow.

🌈 Chard can be harvested continuously

Chard is managed differently from lettuce. A single plant is harvested leaf by leaf for 4 to 6 months, taking the outer stems and leaving the heart to keep producing, so you never cut the whole plant. The varieties with coloured stems, red Rhubarb or yellow Bright Yellow, are grown exactly like the white ones and need no special care; the colour sits in the stem and fades when cooked. This species also withstands summer heat far better than lettuce, which makes it the leafy vegetable for high 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 in soilless culture, thanks to their short cycle and shallow roots. The germination sponges hold the seed and can then be slipped as they are into a basket, without disturbing the root. The guide on what to grow in hydroponics details how to manage them 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, staggered sowing is the safest method. Rather than sowing a whole row in April, sow a quarter of a row every 2 or 3 weeks from March to September, changing variety with the season. You then harvest continuously instead of having everything ready in the same week, and you find out within a single year which variety tolerates the heat and which withstands the cold where you live. Allow 3 to 7 days for germination depending on the warmth, then transplanting at the 4 true leaf stage for lettuces grown to form a heart.

🪣 Watering and bitterness

A lettuce short of water turns bitter and bolts sooner, and bolting is irreversible once the flower stalk has started. Watering should therefore be regular rather than heavy, preferably in the morning and at the base, because foliage left wet in the evening attracts downy mildew. A fine mulch between the rows limits evaporation and saves you every other watering in summer. Chard, by contrast, tolerates irregular watering far better, which makes it the fallback when holidays fall at the wrong time.

🔁 Save and re-sow

Stored somewhere dry, cool and away from light, lettuce seeds keep their ability to germinate for about 5 years and chard seeds for about 6, so a box of 20 varieties can be sown without loss over several seasons. Lettuce is also well suited to saving your own seed, since its flower is self-fertilising: a few metres between two varieties is enough in a temperate climate. Chard, by contrast, is biennial and crosses with beetroot, so you should let only one of the two flower. The Batavia lettuce Gloire du Dauphiné page presents this variety sold on its own.

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?

Kit	Example varieties
Salads 10	Romaine, oak leaf, iceberg, batavia, cut-and-come-again lettuce, rocket, lamb's lettuce, spinach
Salads 20	The same types, plus the Merveille des Quatre Saisons lettuce and an Asian salad mix
Chard 6	Rhubarb, Bright Yellow, multicoloured mix, spinach chard

Each packet carries the name of its variety, and only one variety.

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