How to grow Forsythia in the UK
Forsythia x intermedia
Forsythia (Forsythia x intermedia) is a flower that grows well in UK gardens. Often the first big yellow display of spring. Cut branches for forcing indoors in February. This guide covers when and how to sow Forsythia, 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 Forsythia
Sowing and harvest window through the year (UK):
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct Plant | Nov | Dec |
Soil, position & care
- Soil
- Most well-drained soils with added organic matter
- Soil pH
- 6.0–7.5
- Position
- Sun or part shade depending on species
- Sowing depth
- Plant so the rootball top sits level with the soil
- Spacing
- Allow for mature spread
- Sowing
- Plant from containers spring or autumn; water in well
- Growing
- Water through the first two summers; mulch annually
- Harvest & upkeep
- Prune to shape after flowering; remove dead/crossing wood
- Watch for
- Generally tough; watch aphids and powdery mildew
Companion planting for Forsythia
No specific companion notes for this plant.
Grow Forsythia this year
Add Forsythia to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Forsythia FAQs
How much sun does Forsythia need?
Forsythia prefers full sun (6+ hrs direct).
Is Forsythia easy to grow?
Easy — good for beginners. Often the first big yellow display of spring. Cut branches for forcing indoors in February.