Cut them back to within 5 or 6 nodes of the ground when the first flowers fade. Fertilize when the second crop of flower buds become visible. Snapdragons may be propagated by seeds, or by cuttings which root readily. The seed germinates in 10 to 14 days at 70 degrees. Do not cover the seed with soil.
Prechilled seeds germinate best.
Seedlings with two to three sets of leaves are pinched, however, dwarf forms do not need pinching. Plants with dark colored flowers have dark green or reddish stems and those with white or pale flowers have pale green stems. Set plants in the garden after the danger of frost has passed. Set the plants six to ten inches apart.