How to Sow Mixed Pastel Calendula Orange & Yellow Seeds in the UK
Growing Mixed Pastel Calendula Orange & Yellow seeds in the UK is a rewarding and low-maintenance experience, perfect for gardeners of all levels. This hardy annual thrives in a variety of conditions, tolerating both poor soils and unpredictable UK weather. Whether you’re growing in the mild climates of the south or more temperate northern areas, Calendula can adapt easily to full sun or partial shade, making it versatile for different garden settings. Its quick germination and ability to self-seed make it an ideal choice for those looking to fill containers, borders, or herb gardens with beautiful, long-lasting blooms. In addition to its vibrant colours, the plant’s edible petals and attraction to pollinators add both culinary and ecological benefits to your garden.
When to Sow Calendula Seeds Indoors or Outdoors
- Indoors: Start seeds indoors 6-8 weeks before the last frost, around February or March. This will give you a head start for early summer blooms. Keep the seeds in a propagator or a warm spot with consistent temperatures between 15-20°C.
- Outdoors: Sow seeds directly outdoors from April to June, once the risk of frost has passed. Calendula can also be sown in late summer for blooms the following spring, making it a versatile plant for succession planting.
Growing Calendula Plants Indoors or in a Propagator
- Sowing Depth: Sow seeds at a depth of 1/8 to 1/4 inch (3-6mm) in seed trays filled with seed compost. Cover lightly with soil and keep the compost moist.
- Temperature: For indoor sowing or in a propagator, maintain a temperature of 15-20°C for optimal germination. Seeds should germinate within 7-15 days.
- Transplanting: Once seedlings are 2-3 inches tall, harden them off by placing them outside for increasing periods before transplanting to their final position outdoors. Space the plants 20-25cm (8-10 inches) apart.
Sowing Mixed Calendula Seeds Outdoors in the Garden
- Sowing Depth: Sow seeds directly outdoors at a depth of 1/8 to 1/4 inch (3-6mm) in well-drained soil.
- Spacing: Thin seedlings to 20-25cm apart once they reach 2 inches tall to allow for proper air circulation and growth.
- Sunlight Requirements: Calendula prefers full sun but can tolerate partial shade. Choose a sunny spot in your garden for the best results.
Caring for Established Calendula Plants
- Watering: Water the plants regularly, especially during dry periods. Calendula is drought-tolerant once established, so avoid overwatering.
- Deadheading: Regularly remove spent blooms to encourage continuous flowering. Deadheading also prevents the plant from self-seeding if you prefer a more controlled garden space.
- Fertilising: Calendula is not a heavy feeder, but you can apply a general-purpose fertiliser once during the growing season for healthier growth.
Flower Life and Harvesting
- Flowering Time: Calendula blooms from early summer to late autumn, providing a long flowering season. Cut flowers regularly to extend the blooming period.
- Harvesting: To harvest flowers for fresh use or drying, cut them in the morning when they are fully open. Hang them upside down in a warm, dry location to dry for long-lasting displays or herbal use.
Frequently Asked Questions About Growing Calendula in the UK
1. Does Calendula Come Back Every Year?
Calendula is an annual in the UK, meaning it completes its life cycle in one growing season. However, it self-seeds readily, so if left to drop seeds, new plants will emerge the following year without needing to replant.
2. Is Calendula Hard to Grow from Seed?
No, Calendula is very easy to grow from seed. It germinates quickly (in 7-15 days) and can tolerate poor soil conditions, making it ideal for beginners.
3. When Should I Sow Calendula Seeds?
Sow Calendula seeds indoors from February to March or directly outdoors from April to June. You can also sow seeds in late summer for spring flowering.
4. Does Calendula Like Full Sun or Shade?
Calendula thrives in full sun but can tolerate partial shade. However, it produces the most vibrant blooms and flowers for a longer period in sunny conditions.
5. Should I Deadhead My Calendula?
Yes, deadheading your Calendula encourages more flowers and prolongs the blooming season. It also prevents the plant from self-seeding if you want to maintain control over where it grows.
6. How Much Room Does Calendula Need to Grow?
Calendula plants should be spaced about 20-25cm (8-10 inches) apart. This ensures they have enough room to grow without overcrowding, which helps to prevent diseases like powdery mildew.
