Cool Flowers | Hardy Annuals – Seed Collection

Grow stronger, earlier blooms with cold-tolerant annuals

Cool Flowers are hardy annuals that thrive in lower temperatures, making them perfect for early sowing and extended flowering seasons. These resilient varieties can be sown in autumn or very early spring, developing strong root systems in cool soil and producing earlier, higher-quality blooms compared to warm-sown plants.

This collection is inspired by professional flower growers and is ideal for those who want to maximize their season, achieve longer stems, and grow premium cut flowers.

Classic Cool Flowers

  • Ammi majus (False Queen Anne’s Lace)
  • Orlaya grandiflora
  • Nigella damascena (Love-in-a-mist)
  • Centaurea cyanus (Cornflower)
  • Papaver rhoeas (Corn poppy)
  • Delphinium consolida (Larkspur)
  • Daucus carota ‘Dara’ (Ornamental carrot)
  • Antirrhinum majus (Snapdragon – Group 1–2)
  • Dianthus barbatus (Sweet William)
  • Matthiola incana (Stock)
  • Scabiosa atropurpurea
  • Achillea millefolium (Yarrow – hardy types)


Cool Flowers | Hardy Annuals – Seed Collection - therapyofflowers.com

New seeds

View all
View all

Ranunculus and Anemones – Elegant Blooms for a Stunning Garden

Transform your garden with the timeless elegance of Ranunculus and Anemones. These classic flowers are beloved for their vibrant colors, delicate petals, and long-lasting blooms, making them perfect for garden beds, borders, and floral arrangements

View all

Blog posts

View all
  • Chocolate Cosmos – The Luxury Flower That Smells Like Dark Chocolate

    Chocolate Cosmos – The Luxury Flower That Smell...

    Discover how to grow Chocolate Cosmos ‘Black Magic’ from seed, overwinter its tubers and enjoy one of the world’s most luxurious flowers with its unforgettable dark chocolate fragrance.

    Chocolate Cosmos – The Luxury Flower That Smell...

    Discover how to grow Chocolate Cosmos ‘Black Magic’ from seed, overwinter its tubers and enjoy one of the world’s most luxurious flowers with its unforgettable dark chocolate fragrance.

  • The Sweet Pea Series That Changed Spring Cut Flower Growing | Lathyrus odoratus Spring Sunshine

    The Sweet Pea Series That Changed Spring Cut Fl...

    Discover the story behind Lathyrus odoratus Spring Sunshine — a professional sweet pea series developed for early cut flower production. Learn how Japanese breeding transformed sweet peas into florist favourites...

    The Sweet Pea Series That Changed Spring Cut Fl...

    Discover the story behind Lathyrus odoratus Spring Sunshine — a professional sweet pea series developed for early cut flower production. Learn how Japanese breeding transformed sweet peas into florist favourites...

  • Muscari – The Charming Spring Bulb We Return to Every Year

    Muscari – The Charming Spring Bulb We Return to...

    Discover everything about growing Muscari (Armenian Grape Hyacinth) — when to plant bulbs, where to grow them, winter care, container growing tips and beautiful varieties including Peppermint, Big Smile, Ocean...

    Muscari – The Charming Spring Bulb We Return to...

    Discover everything about growing Muscari (Armenian Grape Hyacinth) — when to plant bulbs, where to grow them, winter care, container growing tips and beautiful varieties including Peppermint, Big Smile, Ocean...

  • Are Tulips and Daffodils Perennials?

    Are Tulips and Daffodils Perennials?

    Are tulips and daffodils really perennial? Learn why old-fashioned varieties lasted for decades, why modern hybrids can be less reliable, and how proper care, drainage, and bulb selection can help...

    Are Tulips and Daffodils Perennials?

    Are tulips and daffodils really perennial? Learn why old-fashioned varieties lasted for decades, why modern hybrids can be less reliable, and how proper care, drainage, and bulb selection can help...

1 4
View all