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These cheerful, easy-to-grow flowers can transform any garden with their vibrant colours and attractive foliage. However, planting them at the right time is crucial to ensure they thrive in the UK's unique climate.
Quick Answer
In the UK, plant nasturtiums from late March to May after the last frost has passed, ensuring the soil is warm enough for germination.
Understanding UK Climate for Nasturtiums
The UK weather can be unpredictable, especially in the Midlands where I work. Nasturtiums prefer warmer weather and don't handle frost well, so timing is everything. Typically, the last frost date in Staffordshire is around late March to early April.
Ideal Planting Times
To give your nasturtiums the best start, plant them from late March to May. This period ensures the soil has warmed up sufficiently for the seeds to germinate. Check your local frost dates as these can vary slightly.
| Month | Planting Activity | Notes |
|---|---|---|
| March | Start seeds indoors | Use seed trays if frost is still expected |
| April | Direct sow in garden | Ensure frost has passed |
| May | Continue direct sowing | Ideal for warmer areas |
Preparing Your Garden for Nasturtiums
Nasturtiums are not picky about soil, which makes them a favourite among gardeners. However, preparing your garden properly can enhance their growth.
- Choose a sunny spot as nasturtiums love sunlight.
- Ensure well-draining soil to prevent waterlogging.
- Add compost to enrich the soil, though nasturtiums thrive in poorer soils too.
How to Plant Nasturtiums
Once you've prepared the site, sow the seeds about 1.5 cm deep and 30 cm apart. This spacing allows the plants to spread and prevents crowding, which can lead to mildew.
Watering and Care
Water nasturtiums regularly, but avoid overwatering. They prefer drier conditions once established. Deadheading spent blooms will encourage more flowers.
Frequently Asked Questions
Can nasturtiums grow in pots?
Yes, nasturtiums grow well in containers. Ensure the pots have good drainage and place them in a sunny location.
What can I do about pests?
Nasturtiums can attract aphids. Use soapy water sprays or encourage natural predators like ladybirds to keep them in check.
Are nasturtiums edible?
Yes, the flowers and leaves of nasturtiums are edible and add a peppery flavour to salads and dishes.