FLOWERING CABBAGE To be transplanted outdoors in early spring or in July for fall beds. Start seeds, 5-7 weeks before transplanting date. Cover seeds lightly. After emergence and seedlings are 1-2″ tall, replant into a pot of 4.5-8″ diameter setting seedlings deep, up to beginning leaves. Grow at 60°F and with hold nitrogen to make them color up. A great companion for fall mums. Will maintain color all winter long in milder zones.