How to grow French Marigold in the UK
Tagetes patula
French Marigold (Tagetes patula) is a flower that grows well in UK gardens. Companion plant — deters whitefly from tomatoes. Vivid colour all summer. Easy from seed. This guide covers when and how to sow French Marigold, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
When to sow & grow French Marigold
Sowing and harvest window through the year (UK):
Jan | Feb | Mar Sow | Apr | May Plant | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
Soil, position & care
- Soil
- Any reasonable, moisture-retentive but free-draining soil
- Soil pH
- 6.0–7.5
- Position
- Full sun
- Sowing depth
- Surface to 0.5 cm
- Spacing
- 20 cm apart
- Sowing
- Sow indoors Mar–Apr; plant out after frost
- Growing
- Tagetes — the classic veg-plot companion; repels whitefly and nematodes
- Harvest & upkeep
- Deadhead regularly
- Watch for
- Slugs love seedlings
Companion planting for French Marigold
Grows well with:
Tagetes repels whitefly and root nematodes; superb dotted through the tomato and veg beds.
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French Marigold FAQs
When should I sow French Marigold in the UK?
In the UK, sow French Marigold in March. Sowing across these months gives the plant the right soil temperature and day length to establish well.
What grows well with French Marigold?
French Marigold grows well alongside Aubergine, Broccoli, Brussels Sprout, Cabbage, Cauliflower, Chilli. Good companions can deter pests, attract pollinators or make better use of space.
How much sun does French Marigold need?
French Marigold prefers full sun (6+ hrs direct).
Is French Marigold easy to grow?
Easy — good for beginners. Companion plant — deters whitefly from tomatoes. Vivid colour all summer. Easy from seed.