Ridolfia segetum

RHS Plant Profile
false fennel
false fennel John Fielding

Other common names

goldspray

Plants for pollinators
Annual Biennial

An annual to 1.2m, with finely cut, aromatic foliage and tiny, bright yellow flowers carried in umbels to 15cm across. Makes a good cut flower

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

1-1.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
1-1.5 metres

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered
Hardiness
H3

Colour & Scent

Fragrance Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Apiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Genus
A genus of annuals native to the Mediterranean with smooth, divided foliage and umbels of yellow flowers. The seeds and leaves contain essential oils and are edible both raw and cooked
Name Status
Correct

How to Grow

Cultivation

Grow in moderately fertile, moist but well drained soil in full sun. Plants may require support in exposed sites

Propagation

Propagate by seed sown under glass in early spring, or in situ in late spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Prairie planting
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free