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Loose leaf Lettuce Black Seeded Simpson - Vilmorin seeds

Lactuca sativa Blonde à graine noire
Oak leaf lettuce

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More information

'Black-seeded Simpson' is a popular loose leaf variety that doesn't form hearts but rows of tender, ruffled, light green leaves that grow back after each harvest. Fairly resistant to heat and bolting. Sow under cover from September to February and outdoors from March to August.
Ease of cultivation
Beginner
Height at maturity
20 cm
Spread at maturity
20 cm
Soil moisture
Damp soil
Germination time (days)
10 days
Sowing method
Direct sowing, Sowing under cover
Sowing period February to July
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Harvest time June to October
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Description

'Black-seeded Simpson' is a loose leaf variety that doesn't form hearts but rows of tender, ruffled leaves that grow back after each harvest. Fairly resistant to heat and bolting. Sow under cover from September to February and outdoors from March to August.

Loose leaf lettuce doesn’t form hearts but rows of leaves, that can be harvested as and when needed. The plant will continue to put out new leaves.

Lettuce is one of the most popular vegetables thanks to its deliciously fresh texture and flavour and its numerous health benefits. Generally eaten raw in salads, it is also very good cooked (with peas, for example!)

Lettuce is an annual plant that belongs to the great Asteraceae family. Its Latin name is Lactuca sativa: “lactuca” refers to the white sap that appears when the leaves and stems are cut, "sativa" means "cultivated".

Lettuce an essential member of any self-respecting vegetable garden. With so many varieties available, it can be grown almost all year round. So long as you comply with the growing calendar of the chosen variety, it is easy and quick to grow and will do well in most rich, moist soils.

Harvesting: use a knife to cut the plants’ outer leaves. The plant will then continue to develop and produce new leaves.

Preservation: Lettuce can be stored for a few days in the refrigerator but is best eaten fresh.

Useful tip: During hot summers, lettuce exposed to direct sunlight tends to wilt and look miserable. To avoid this, protect the plants from intense sunlight by covering them with overturned crates. Summer lettuces don’t have to be grown in rows: dot them around your vegetable garden, under runner beans, in the middle of a cucumber or squash patch. They will benefit from the extra shade.

Harvest

Harvest time June to October
Type of vegetable Leaf vegetable
Size of vegetable Medium
Interest Flavour, Productive

Plant habit

Height at maturity 20 cm
Spread at maturity 20 cm
Growth rate fast

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Lactuca

Species

sativa

Cultivar

Blonde à graine noire

Family

Asteraceae

Other common names

Oak leaf lettuce

Origin

Cultivar or hybrid

Annual / Perennial

Annual

Product reference27141

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Planting and care

Sowing:

Loose leaf lettuce germinates at a temperature of about 18°C and usually takes around 10 days.

Sow under cover (cold frame) from February to April or directly outdoors from March to July.

In loose, well prepared soil, sow the seeds in rows, 4 cm apart, 0.5 cm deep and cover with soil. Leave about 15 cm between each row. When the seedlings are strong enough, thin them out by keeping one strong plant every 15 cm.

If slugs and snails are a problem in your vegetable garden, sowing under cover in small pots may be the best option. The plants can be moved to their final position when they are big enough.

 

Where to grow:

Lettuce is not a very greedy vegetable, but it does require humus-rich soil or else it tends to bolt (go to seed) fairly quickly. Prevent this by raking a bit of well-rotted compost into the top 5 cm of the prepared seed bed in the autumn. Lettuce does well in slightly acidic to neutral soils (PH between 5.5 and 7.5) that are kept moist. Remember to water regularly.

Lettuce can be easily grown alongside other slow-growing vegetables such as beans, tomatoes, cucumbers etc. Avoid growing lettuce next to maize plants.

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Seedlings

Sowing period February to July
Sowing method Direct sowing, Sowing under cover
Germination time (days) 10 days

Care

Soil moisture Wet
Disease resistance Good
Pruning No pruning necessary

Intended location

Type of use Vegetable garden
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Beginner
Exposure Sun, Partial shade
Soil pH Any
Soil type Silty-loamy (rich and light), 192

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