Growing Sunflowers
How to sow and grow sunflowers in UK gardens, including mix and decorative types.
Overview
Sunflowers are straightforward annuals for sunny UK gardens. Tall types need space and support; compact decorative forms suit pots and borders. Sow after frost risk or start early indoors for a head start.
Sowing
Direct sow outdoors from late spring once the soil has warmed, or sow indoors in pots a few weeks earlier and plant out after hardening off. Sow into well-drained soil or compost in full sun. Protect young seedlings from slugs and snails.
Care
Water in dry spells, especially in pots. Tall varieties benefit from staking. Deadhead if you want tidier plants; leave seed heads if you want to feed birds later in the season.
Frequently asked questions
When should I sow sunflower seeds in the UK?
Sow outdoors from late spring after frost risk, or start indoors a little earlier and plant out once nights are milder.
Can sunflowers grow in pots?
Yes — choose compact varieties for containers, use a deep pot with drainage, and water regularly in warm weather.
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