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Sidr (Christ's Thorn)

السدر · Ziziphus spina-christi

One of the best-known native trees in Saudi Arabia, famous for its nabq fruit and Sidr honey.

Sidr (Christ's Thorn)
Photo: Wikimedia Commons

Quick facts

Arabic nameالسدر‏
English nameSidr (Christ's Thorn)‎
Scientific nameZiziphus spina-christi‎
FamilyBuckthorn family (Rhamnaceae)
Plant typeEvergreen thorny tree
HeightUsually 5 to 12 m
Water use Low

Planting and harvest calendar

Best time to plant

October to February

Harvest time

December to February

Flowers from September to November (Sidr honey season); nabq fruit is picked in winter
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Planting timeHarvest or flowering

Times are general for the Saudi climate and may shift a few weeks by region: cooler in the highlands and the north, warmer on the coasts and in the south.

Description

A dense tree with paired thorns, one straight and one hooked. Leaves are oval and shiny with three clear veins. Flowers are small and yellow-green. The small round fruit (nabq) is edible.

Where it grows

Common in most regions, in valleys, plains and on hillsides. Often planted in farms and gardens.

Soil

Grows in many soil types, handles salty and alkaline soil, and has deep roots.

Water and irrigation

Very drought tolerant once settled.

Climate and light

Handles strong heat and full sun. Young trees are sensitive to hard frost.

Propagation

From seeds. Improved types are grafted.

Benefits and uses

  • Bees make Sidr honey from it
  • The nabq fruit is eaten
  • Leaf powder was used to wash hair
  • Gives shade and blocks wind

Drawbacks

  • Thorny branches
  • Strong spreading roots, so keep it away from buildings and pipes
  • Falling fruits and leaves need cleaning