Baby Leaf Salad Oriental Mix - Xotica Collection. (Lactuca sativa) From this carefull selection of different varieties, you will obtain a delicious salad with a wide variation of tastes ranging from soft butter to nuts and spices. Sow in rows, 25 cm apart from mid March till the end of August in open ground. Sow densely and do not thin out. Leaf lettuce can be harvested several times as the leaves will continue to grow after cutting.