Lippia dulcis

RHS Plant Profile
Aztec sweet box

Other common names

Mexican lippia, yerba dulce

Herbs - Culinary

A fast-growing, spreading culinary herb to around 30cm in height, with aromatic, semi-evergreen, dark green toothed foliage which develops a purple tinge if exposed to cooler night-time temperatures. Small, white, cone-shaped flowers appear in summer. Provides excellent groundcover and can also be used as a trailing plant in pots, containers and hanging baskets. The leaves have a sweetly intense flavour and contain camphor, but may be used sparingly in drinks and fruit salads

Position

Full sun

Soil Types

Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

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

Growing Conditions

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

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered
Hardiness
H2

Colour & Scent

Fragrance Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Verbenaceae
Native to GB/Ireland
No
Foliage
Semi evergreen
Habit
Bushy, Spreading branched
Genus
Name Status
Correct

How to Grow

Cultivation

Grow in moist but well-drained soil in full sun or grow in peat-free compost in pots, containers or hanging baskets. Protect from frost and avoid waterlogging

Propagation

Propagate by softwood cuttings

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Hanging Basket
  • Patio and container plants
  • Ground cover

Pruning

Cut back in late winter to early spring to maintain shape and bushiness

Pests

Generally pest-free, but may be susceptible to glasshouse red spider mite, aphids and glasshouse whitefly

Diseases

Generally disease-free