Lettuce Butterhead Syrena

Lettuce Butterhead Syrena: variety and characteristics

Lettuce Butterhead Syrena (Lactuca sativa) is an annual vegetable of the Asteraceae family. This is a reliable, early variety that usually takes 35-45 days from sowing to harvest. It is suited to outdoor spring growing, but also grows in a greenhouse.

It shows high resistance to disease, especially downy mildew, and withstands adverse weather conditions, keeping high quality for a long time.

It develops large heads that can weigh about 400 - 450 g. They are semi-open, broad, and made up of crisp, wavy, pale green and tasty leaves. Recommended for direct, raw eating in salads or as a garnish.

The young leaves have an excellent flavour, a crunchy and tender texture, and contain protein, sugars, provitamin A, B vitamins, vitamins C, E and K, and minerals (such as calcium and potassium).

Lettuce and salad are the foundation of the spring table — crisp, fresh and quick. With the right variety and sowing in several batches, you have fresh salad from March to November.

Key features

• Measured germination rate of the batch: 89%
• Seeds per packet: 765–1035 pcs (1 g)
• Seed origin: Poland
• Sowing: February – September; direct or as seedlings
• Harvest: March – November
• Position: sun to partial shade

When to sow Lettuce Butterhead Syrena

Lettuce Butterhead Syrena seeds are sown in February – September. Harvest takes place from March to November. The months are a guide for a temperate climate — in warmer areas sow 1–2 weeks earlier, in cooler or upland areas, later.

How to sow and grow Lettuce Butterhead Syrena

• Sowing method: direct or seedlings
• Depth: 0.5 cm (the seeds like light)
• Spacing: 25–30 cm
• Germination: 4–8 days at 12–20 °C
• Position: sun to partial shade

To sow the seeds directly, choose a well-drained spot that receives direct sunlight. Whether you plant in the ground or in prepared containers, keep the lettuce seeds moist until they emerge within seven to ten days. Lettuce is hardy and can be planted as soon as the soil is workable. Can be sown directly, 3 seeds in rows 20-30 cm apart. Cover the seeds lightly with about 1 cm of fine soil and firm lightly. Thin to one plant per position, which will ensure a full spacing of 30 cm. Sow every 3 weeks for a continuous supply of fresh lettuce. The seeds germinate even at a soil temperature of 4°C, but poorly above 22°C. In dry weather, keep the soil moist.

Sow shallowly — the seeds germinate better in the light. Above 25 °C germination stops and the plants bolt; in summer, sow in partial shade. Water regularly.

Harvest and use

Harvest whole heads when they are firm, or cut individual leaves in the case of leaf varieties.

Frequently asked questions

When should Lettuce Butterhead Syrena be sown?

The recommended months for sowing are February – September. Sowing method: direct or seedlings.

How many seeds are in the packet?

The packet contains 765–1035 seeds, pack size 1 g.

What is the germination rate of the seeds?

The measured germination rate of this batch is 89%. The test was carried out under controlled laboratory conditions; in the field, emergence depends on soil, temperature and moisture.

Why does lettuce bolt?

From heat and long days. Sow in spring and autumn, and in summer use bolt-resistant varieties and partial shade.

How often should lettuce be sown?

Every 2–3 weeks — that way you have a continuous fresh harvest.