Open menu Menu Login My cart (0) Cool Season Flowers Home / Collections / Cool Season Flowers For many regions, these annuals can be planted in the fall, then overwinter and bloom in the spring. When planting these flowers in cool weather, they become well established and grow a strong root system. The result? You'll have spectacular, thriving flowers in the spring and enjoy gorgeous blooms all season! Know your zone! Below is a listing of how to handle different cool season flowers depending on your planting zone, and time accordingly... Show More Sort by Name: A-Z Featured Best sellers first Price: low to high Price: high to low Name: Z-A Name: A-Z Oldest to newest Newest to oldest Filter by Availability: All Availability: All Availability: Ready to ship Ammi Green Mist Seed starting at $11.30 Ammi Snow White Organic Seed starting at $3.14 Bupleurum Griffitti Seed starting at $8.90 Calendula Costa Mix Seed starting at $2.28 Calendula Kinglet Formula Mix Seed starting at $5.83 Campanula Champion 2 Deep Blue F1 Seed starting at $4.07 Campanula Champion 2 Lilac F1 Seed starting at $4.07 Campanula Champion 2 Pink F1 Seed starting at $4.07 Campanula Champion 2 Rose F1 Seed starting at $4.07 Campanula Champion 2 White F1 Seed starting at $4.07 Campanula Champion Pro Deep Blue F1 Seed starting at $9.41 Campanula Champion Pro White F1 Seed starting at $10.45 Centaurea Classic Artist Mix Seed starting at $5.62 Centaurea Classic Fantastic Mix Seed starting at $5.62 Centaurea Classic Magic Mix Seed starting at $5.62 Centaurea Classic Romantic Mix Seed starting at $5.62 Daucus Dara Seed starting at $10.20 Delphinium Aurora Mix F1 Seed starting at $9.72 Delphinium Guardian Mix F1 Seed starting at $17.40 Delphinium Jenny's Pearl Blue F1 Seed starting at $27.07 Delphinium Jenny's Pearl Pink F1 Seed starting at $27.07 Delphinium Magic Fountains Mix Seed starting at $10.48 Digitalis Camelot Mix F1 Seed starting at $4.73 Digitalis Candy Mountain Seed starting at $13.77 Larkspur Giant Imperial Mix Organic Seed starting at $3.66 Lisianthus Mariachi Blue F1 Seed starting at $16.20 Lisianthus Mariachi Carmine Seed starting at $16.20 Lisianthus Mariachi Pink F1 Seed starting at $16.20 Lisianthus Mariachi Pure White Seed starting at $16.20 Lisianthus Rosanne 1 Black Pearl Seed starting at $23.76 Lisianthus Rosanne 1 Brown F1 Seed starting at $23.76 Lisianthus Rosanne 1 Green Seed starting at $23.76 Lisianthus Rosanne 3 Brown Seed starting at $23.76 Lisianthus Voyage 2 Blue F1 Seed starting at $24.20 Lisianthus Voyage 2 Champagne F1 Seed starting at $24.20 Lisianthus Voyage 2 Deep Rose Seed starting at $24.20 Lisianthus Voyage 2 Green F1 Seed starting at $24.20 Lisianthus Voyage 2 Lavender F1 Seed starting at $24.20 Lisianthus Voyage 2 Pink Seed starting at $24.20 Lisianthus Voyage 2 White F1 Seed starting at $24.20 Molucella Bells of Ireland Seed starting at $6.82 Ornamental Kale Crane Bicolor F1 Seed starting at $3.70 Ornamental Kale Crane Feather King F1 Seed starting at $11.47 Ornamental Kale Crane Feather Queen F1 Seed starting at $11.47 Ornamental Kale Crane Pink F1 Seed starting at $3.70 Ornamental Kale Crane Red F1 Seed starting at $3.70 Ornamental Kale Crane White F1 Seed starting at $3.70 Ornamental Kale Cut Flower Collection Seed starting at $9.45 `); 1 2 3  Join our e-mail list Sign up for money-saving special offers, growing tips and new product releases! My email address: Why Choose Harris Seeds? Harris Seeds is a privately owned seed company with a long tradition of supplying the finest vegetable seeds, flower seeds, plants and supplies to growers and gardeners since 1879. The Harris Seeds team includes local growers and garden enthusiasts, whose invaluable knowledge and expertise allow us to better serve you. Every Harris Seeds employee shares a common goal – a commitment to your success. Get to Know Us About Harris Seeds Reviews & Ratings Our Blog Careers Wholesale More Info FAQs Shipping Discounts and Credit Terms Downloadable Forms Refund and Return Policies Cookie Policy Privacy Policy Quick Order (Order by SKU) Resources and Guides Donation Requests Gift Cards Order Free Catalogs Keep in Touch Facebook Twitter Pinterest Instagram YouTube Contact Us Call Center Hours M-F: 8:00 am - 5:00 pm ET Phone: 800.544.7938 Fax: 877.892.9197 Email Us > Contact Your Account Rep > 355 Paul Rd. P.O. Box 24966 Rochester , NY 14624 © 2021 Harris Seeds MY WISHLIST