How to grow Phlox paniculata in the UK
Phlox paniculata
Phlox paniculata (Phlox paniculata) is a flower that grows well in UK gardens. Smells of summer evenings. Mildew-resistant varieties (David, Blue Paradise) save the trouble. This guide covers when and how to sow Phlox paniculata, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
Type
Flowers
Difficulty
Easy — good for beginners
Position
full sun (6+ hrs direct)
Sow
spring
Harvest
—
When to sow & grow Phlox paniculata
Sowing and harvest window through the year (UK):
Jan | Feb | Mar | Apr Plant | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
Soil, position & care
- Soil
- Fertile, moisture-retentive but free-draining soil
- Soil pH
- 6.0–7.5
- Position
- Sun or part shade depending on species
- Sowing depth
- Plant at the same depth as the pot
- Spacing
- 30–60 cm apart
- Sowing
- Plant container-grown stock spring or autumn; divide established clumps in spring
- Growing
- Water well the first season until established; mulch in spring
- Harvest & upkeep
- Cut back faded foliage in late autumn or early spring; divide every 3–4 years
- Watch for
- Slugs and snails on new shoots; otherwise robust
Companion planting for Phlox paniculata
No specific companion notes for this plant.
Grow Phlox paniculata this year
Add Phlox paniculata to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Phlox paniculata FAQs
How much sun does Phlox paniculata need?
Phlox paniculata prefers full sun (6+ hrs direct).
Is Phlox paniculata easy to grow?
Easy — good for beginners. Smells of summer evenings. Mildew-resistant varieties (David, Blue Paradise) save the trouble.