Lay a measuring tape along the planting area and drop a seed every 3 or 4 inches.You don't have to plant the seeds in a straight row. Irregular borders and mass plantings are natural and appealing. If you are planting in individual pots, place one seed in each pot.
Scatter soil over the hollyhock seeds, barely covering them with no more than 1/8 inch of dirt. Hollyhock seeds germinate best when they are exposed to some light.
Mist the planting area with a spray bottle. For large areas, use a hose-end sprayer on the mist setting. Take care not to drench the area, because a hard spray will disturb the soil and could move the seeds.
When the seedlings get their second set of leaves, thin the plants to 18 inches apart. Look closely at the plants as you pull the extras, as this is a good time to cull plants that aren't thriving.