Agriculture Reference
In-Depth Information
When “True” Leaves Appear
Whatever container you start seeds in, thin plants (cut with scissors) or transplant to in-
dividual or larger containers as soon as the plants have a set of true leaves. (True leaves
are small look-alikes of the plant's mature leaves; ignore the first set of small leaves,
known as “seed leaves,” that develop.) Ideally, seedlings should be far enough apart that
leaves are just touching. If roots start growing out the bottom, plants need a larger con-
tainer.
Fertilizing Young Seedlings
If your seed-starting mix doesn't include fertilizer, start feeding plants once they have
their second set of true leaves. Feed weekly with half-strength fish-and-seaweed fertil-
izer, or a standard liquid fertilizer diluted to one-quarter strength.
Preparing for Life Outdoors
Seedlings need to be acclimated to the outdoors before you set them out. Do this gradu-
ally over two weeks. Start putting them outside for a couple of hours in the morning or
late afternoon. After a few days increase the time to three hours, then four hours, up to
a full day.
When you transplant seedlings into the ground, do it late in the day. Or shade plants
under row cover or an upside-down carton to minimize transplant shock. Water plants
well to settle the soil around their roots.