We normally plant sunflowers seeds directly into the ground because sunflowers have long taproots and it’s often hard to predict when the soil is warm enough to plant.
Most seedlings do best when they’re transplanted right away but if they get too leggy, it should be OK to transplant them deeper. Bury them to about 1” below the lowest leaves. To avoid pests, you may want to keep a milk bottle around them until they’re well established and maybe circle them with slug deterrant, too.
We normally plant sunflowers seeds directly into the ground because sunflowers have long taproots and it’s often hard to predict when the soil is warm enough to plant.
Most seedlings do best when they’re transplanted right away but if they get too leggy, it should be OK to transplant them deeper. Bury them to about 1” below the lowest leaves. To avoid pests, you may want to keep a milk bottle around them until they’re well established and maybe circle them with slug deterrant, too.