How Tall Is a Mustard Tree?
Mustard trees (Salvadora persica) are small trees and bushes that are native to the Middle East and Africa. Mustard trees can be cultivated in parts of the United States that are hot and have low humidity. The mustard tree does not produce the seeds used to produce the popular condiment mustard.
Mustard trees are considered evergreen shrubs, according to Kansas State University. When fully grown, mustard trees can reach up to 20 feet in height.
Mustard trees have an irregular shape, being just as wide as they are tall. The shrub's branches grow very low to the ground and produce oval leaves. When the tree flowers, it blooms in green and yellow blossoms.
- Mustard trees (Salvadora persica) are small trees and bushes that are native to the Middle East and Africa.
- Mustard trees have an irregular shape, being just as wide as they are tall.
In the U.S., mustard trees grow best in USDA hardiness zones 7 through 11. They will grow tall without much water and, when mature, the mustard tree produces a fleshy, but very sweet, fruit.
Mustard Tree Facts
Considered by some people to be the source of the mustard seed mentioned in Scripture, the mustard tree (Salvadora persica) grows wild throughout much of the Middle East and Africa. Mustard tree is also called toothbrush tree because the tender young sticks cut from the tree have been used as antibacterial teeth cleaners for hundreds of years. Those fibers provide the peelu often found in alternative toothpastes. Growing mustard trees from seeds begins with soaking a mustard tree's fruits in lukewarm water for one to three days until their pulp has been reduced to a runny texture. Tree tobacco (Nicotiana glauca), hardy in USDA zones 8 through 11, also is occasionally called "mustard tree," perhaps due to the yellow shade of its tubular flowers. A South American, soft-wooded shrub that can reach 20 feet tall and has 2- to 8-inch, oval, bluish-gray leaves, it is highly toxic and can be invasive.
- In the U.S., mustard trees grow best in USDA hardiness zones 7 through 11.
- Tree tobacco (Nicotiana glauca), hardy in USDA zones 8 through 11, also is occasionally called "mustard tree," perhaps due to the yellow shade of its tubular flowers.
- Kansas State University: Salvadora persica (Siwak)
- Food and Agriculture Organization of the United Nations: Salvadora Persica
- World Agroforestry Centre: Salvadora Persica
- Kew Royal Botanic Gardens: Salvadora Persica
- Pharmacognosy Review; Salvadora Persica; M. Khatak et al.
- Encyclopaedic Dictionary of the Bible; William George Smith and John Mee Fuller, Editors
- Weed Control in Natural Areas in the Western United States; University of California-Davis Weed Research and Information Center
- ZipcodeZoo.com: Salvadora Persica
- Forestry Nepal: Seed Extraction
- The Plant Book; Susan Page and Margaret Olds, Editors
David Harris is a writer living in Portland, Ore. He currently is the editor-in-chief of the online magazine Spectrum Culture. He holds a Master of Fine Arts in creative writing from Sarah Lawrence College.