Stock seeds are sown indoors using small pots or starter trays for 6-8 weeks before the last expected frost. Press the Stock flower seeds into the soil and cover no more than 1/8 inch with soil. Stock seeds need light and continuous moisture to germinate. Transplant Stock seedlings into the garden 14 inches apart. Stock plants monthly with a general purpose liquid fertiliser. Trim the Stock flower spikes when they are down blooming. Deadheading is to neaten the appearance of the plant. Re-seeding is not a problem.