TROPICA - California Giant Redwood (Sequoiadendron gigantea) - 50 Seeds - Winter-Hardy Price for 50 seeds. Only original TROPICA Product with the Four-colour-card with color photo! Free Shipping for orders above 20 USD Winter-hardy from 3rd year on Seeds can be started indoors any time throughout the year. Seed cards with detailed information about propagation, place, care and hibernation.