8. Advance preparation of plants for planting
First, harden off tender or half-hardy plants over a couple of weeks before planting. Do this by putting plants outside during mild days, bringing them in at night if cold is forecast, then leaving out during mild nights, and finally planting outside (once frosts have finished, in the case of tender plants).
Then, thoroughly soak the plant roots for several hours before planting out to give them a good start.
