concept hard to grasp; surely when smoth
ered in soil there’s no air? But here I was so
wrong : the whole point of fine soil is that
there is plenty of air, providing it isn’t satu
rated with water that has nowhere to drain.
■ Te m p e r a t u r e : To keep the germinating
seeds at the right temperature, you can use a
specially designed heat-pad arrangement
that is thoroughly waterproof (don’t use the
one you bought for that back pain!) and linked to a temperature-sensing device,
allowing you to regulate the soil temperature. There’s a range between 63ºF and
75ºF that works best on vegetable seeds. All you have to do is set your tray of
freshly planted seeds directly on top of the waterproof pad and plunge the ce
ramic sensor into one of the small pots. When the soil temperature reaches 70ºF,
the pad will turn off; it’ll kick back on when the soil cools slightly.
■ Light: Some seeds, especially really small ones like lettuce, need
some kind of light source to help them germinate. Without light
they will emerge, but they reach out for whatever glimmer they
see and get tall and straggly instead of developing sturdy stems.
Good greenhouse centers have excellent safe grow lights, very im
portant in a watery environment!
■ Feeding: At their earliest stage, the seed has its
own life support system and needs no added boost
from outside until it has six leaves. It is at this time
that the transplanting should take place.
MY NEED-TO-KNOW LIST • 31