It depends on the person as far as you need to dig to plant your flowers. It depends on how deep the hole is and how far you want to plant the product as well.
You should plant it 15 inches apart.
Plant the divisions about 1 to 3 feet apart, depending on the type. Make sure the holes are twice as wide as the plants and 4 to 6 inches deep. Do not use fertilizer when planting.
You should plant them 3 inches apart.
Plant the bulbs in clusters of 5-7 bulbs 4" apart at irregular intervals, about 4" deep in good fertile soil.
You should plant them arond 3-4m apart
15cm should be fine
the ground.
Well they can grow to anything as root hair is un-sizable so it can go as far as brooklyn.
A plant's roots go as deep as the C Horizon.
Rows should be spaced 12" apart and the seeds within the rows should be planted 3" apart. Once the plants are growing, transplant the seedlings, making sure each plant has 6" of space on both sides.
As far as "it" goes