Calendula 'Wintersun' Seeds

Calendula officinalis 'Wintersun' is a robust Hardy Annual (H5). While most marigolds are prized for their summer display, 'Wintersun' is a horticultural specialist, capable of withstanding frost and snow to provide flowers during the British winter months. It is an exceptionally cold-hardy selection of the traditional native Pot Marigold.

The "Winter" Trick: The timing of your sowing dictates the flowering window. While a spring sowing (March-May) yields traditional summer blooms, the real magic of this variety occurs with a late August or September sowing. This allows the plants to establish a strong basal rosette before the deep cold arrives, enabling them to burst into bloom during mild winter spells and very early spring.

Pollinator Lifeline: Calendula is a vital resource for biodiversity. As an RHS Plant for Pollinators, 'Wintersun' provides accessible nectar in January and February—a critical period when very few other species are in bloom—supporting bumblebees that may emerge early during unseasonably warm winter days.

Calendula seeds are large, curved (resembling tiny seahorses), and exceptionally easy to handle, making them a perfect project for all experience levels.

How to Sow:
Direct sow outdoors where they are to flower. For summer blooms, sow March to May. For winter and early spring interest, sow August to September. Scatter the seeds onto prepared soil and cover with approximately 1cm of fine earth. Germination is rapid, typically occurring within 7-10 days.

Where to Plant:
They thrive in full sun or partial shade and are remarkably unfussy regarding soil conditions. 'Wintersun' will perform equally well in poor, "hungry" soil or heavy clay, provided the drainage is adequate. This versatility makes it ideal for filling gaps in borders or providing winter colour in patio containers.

Ongoing Care:
Deadheading is the secret to a relentless floral display. By removing the spent, sticky seed heads as soon as the petals fade, you prevent the plant from putting energy into seed production and force it to produce a continuous succession of creamy-apricot buds. Regular picking for the vase also serves this purpose and brings winter sunshine indoors.

As 'Wintersun' blooms in the cooler months, it pairs spectacularly with autumn-sown available partners from our range:

• 🔥 Wallflower 'Fire King': The Warm Harmony. The fiery orange-red tones of 'Fire King' create a stunning partnership with the creamy-yellow of 'Wintersun'. Both are autumn-sown for a spectacular spring display, provide vital early nectar, and together carry that legendary sweet fragrance that defines the transition from winter to spring.
• 💙 Forget-me-not (Blue): The Classic Carpet. Create a timeless spring bedding display by pairing the azure-blue clouds of Forget-me-nots with the golden structure of 'Wintersun'. Blue and orange/yellow are complementary colours that make each other appear more vibrant, creating an effortless cottage garden masterpiece.

Direct sow in autumn for a rare winter and early-spring display, or in spring for a traditional harvest of golden summer blooms.