Work out how many hedge plants you need, based on hedge length, plant spacing and number of rows.
The calculator works out how many plants fit per meter, and multiplies by the hedge length and number of rows:
Tighter plant spacing gives a thicker, more defined hedge sooner, but costs more since you need more plants. Two staggered rows give a thicker, more solid and light-blocking hedge than a single row, but also roughly double the number of plants needed.
It varies by species, but many common hedge plants are planted with 25–40 cm spacing. Tighter planting gives a thicker hedge sooner, but costs more and can require more pruning over time.
Two staggered rows give a thicker and more solid hedge sooner than a single row, and are common for tall or light-blocking hedges. The downside is that you need roughly double the number of plants.
Spring and fall are usually best, when the ground isn't frozen and the plants avoid the harshest summer heat right after planting. Bare-root plants are often planted in fall or early spring.