ogues give full description.

For growing at a low temperature, fifty-five degrees or so, the
following are good: Wootton, Papa Gontier, red; Perle, yellow;
Bridesmaid, large pink; Mad. Cousin, small pink; Bride, white. The above
will make a good collection for the beginner to try his or her hand
with.

CHAPTER XXV

VEGETABLES

While tomatoes and cucumbers require a high temperature, lettuce may be
grown easily all the year round. A good method is to grow three crops of
lettuce during the fall and winter, and follow with tomatoes and
cucumbers in the spring, when the high temperature required can be more
easily maintained.

Lettuce is a low-temperature plant, and there is no reason why the small
greenhouse owner should not be able with ease to supply his table
constantly with this delicious salad. As with the carnations, and
violets, if there is no part of a bench that can be devoted to the
lettuce, a few plants can be grown in pots. If this method is used, the
seedlings should be pricked off into small pots. When these begin to
crowd they will have to be given six to eight inches of room, and the
pots plunged in soil to their full depth. But it will be more
satisfactory to devote a part of a bench, a solid one if possible and in
the coldest part of the house, to the lettuce plants. Well rotted
manure, either horse or mixed, and a sandy loam, will make the right
soil. The first sowing of seed should be made about August first, in a
shaded bed out-of-doors; the seedlings transplanted, as with spring
lettuce, to flats or another bed. By the last week in September these
will be ready to go into the beds prepared for them, setting them about
six inches apart for the loose and eight for the heading varieties. The
bed should be well drained, so that the soil will never stay soggy after
watering. The soil should be kept fairly dry, as too much moisture is
apt to cause rot, especially with the heading sorts. Syringe
occasionally on the brightest days, in the morning. Keep the surface of
the bed stirred until the leaves cover it. Keep the temperature below
fifty at night, especially just after planting, and while maturing. And
watch sharply for the green aphis, which is the most dangerous insect
pest. If tobacco fumigation is used as a preventive, as suggested, they
will not put in an appearance. The first heads will be ready by
Thanksgiving, and a succession of plants should be had by making _small_
sowings of se