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Valmain is an American, large cos/romaine type lettuce. Some resistance to mildew. Very large and crisp hearts.
Sow the Valmaine romaine seeds from February onwards. 0.5 cm deep leaving 30 cm between rows.
Sow first under protection, in seed trays to plant out later, or direct in the greenhouse in March. Then from in mid spring you can sow the seeds direct outside in to a well prepared bed; in late April - June.. Lettuce seeds will germinate above 10 degrees Celsius.
A rich, well drained soil is recommended.
Thin out to 15 cm apart for baby leaf production, 30 - 40 cm apart for full size lettuce.Water well in dry spells.