Athel Tamarisk

Athel tamarisk (Tamarix aphylla), also called athel pine or athel tree, is a large evergreen desert tree in the tamarisk family, grown across hot, dry country as a tough windbreak and shade tree.147 It is native across North, East, and Central Africa, through the Middle East, and into parts of western and southern Asia — reported from Morocco and Algeria east to Egypt, south to the Horn of Africa and Kenya, and on through the Arabian Peninsula, Iran, Afghanistan, and India.347 For a homesteader with a sun-baked, salty, wind-scoured corner of the property, the appeal is simple: this is a tree that throws shade and breaks wind where most trees will not survive. It is not a food or medicine plant, so plant it for shelter, not the table.14

Athel is a large evergreen tree, sometimes multi-stemmed, reaching roughly 15 to 18 m tall with a broad, rounded to irregular crown about 10 m across at maturity.1246 The bark is rough and grey-brown, and the many slender twigs have greenish-to-reddish young growth, giving the canopy a fine, feathery look.136 Its tiny, scale-like leaves overlap and press closely against the twigs, so the foliage reads as conifer-like — hence the misleading name “athel pine,” though it is no relation to true pines.34 That foliage is grey-green and salt-laden: athel is a halophyte that takes up salt and excretes it through salt glands on its leaves.4 The clinching field cue in dry climates is that salt signature — visible build-up on the foliage and on the soil beneath the canopy, usually with very sparse understory growth because of the surface salinity.16

Growing athel tamarisk

Athel naturally grows along watercourses in arid and semi-arid areas and tolerates extremes that defeat most trees.24 It withstands high temperatures and prolonged heat, and also handles frost and low temperatures, though it is less suited to prolonged cold.2 It thrives in desert and Mediterranean-type climates and is even used on coastal sites exposed to sea spray.24 Its standout trait is salt tolerance: it grows in saline and alkaline soils — reported to grow best at salinity levels up to about 15,000 ppm sodium — and across a wide range of soil types including saline ground, chalky soils, and coastal sands.247

The sources here describe athel’s climate by behaviour rather than by USDA zone, and none gave exact zone numbers, so none are stated. Its established use in the low deserts of Arizona, the California deserts and Central Valley, and inland Australia points to a warm, broadly frost-tolerant desert and subtropical adaptation — an inference from where it is grown, not a cited zone figure.157

• Propagation: Athel reproduces both by seed and vegetatively, from suckers and from cuttings, with cuttings the common route in arid-region shelterbelts.4 Its seeds are very small and wind-dispersed, and tamarisk seedlings in general establish on moist, freshly deposited alluvium along waterways; note that in some U.S. climates the tree reportedly does not reproduce sexually, which limits its spread there.47
• Sun and climate: Full sun and heat suit it; it is built for desert and Mediterranean conditions.2
• Soil and water: It accepts a wide range of soils and is most useful exactly where ground is saline, alkaline, or sandy; as a desert riparian tree it tolerates drought once established.24

Specific spacing, sowing dates, and time-to-maturity figures were not detailed in these sources, so they are left out rather than guessed.4

Harvest and uses

Athel is grown as a hardy windbreak, shelterbelt, and shade tree in hot, saline, alkaline environments — that shelter is the harvest.124 It is not documented as edible or medicinal, and given how strongly it accumulates salt it should not be assumed edible without further evidence.14 The tree flowers with small white to pale pink blooms in spike-like racemes from summer to autumn (for example, August to September in a Mediterranean climate), followed by a small capsule typical of Tamarix holding many tiny hairy, wind-borne seeds.27

Safety and cautions

The biggest caution with athel is not toxicity but invasiveness. It has been introduced as a windbreak and ornamental in the western United States (Arizona, California, Nevada, Texas, Utah, and Puerto Rico) and in central and western Australia, where it is in places considered invasive or a management concern.1567 Because it spreads from suckers and cuttings as well as seed, broken or buried stems can take root, so site it deliberately as a perimeter tree, watch for sprouts, and do not leave cut stems on moist ground. Where it is regulated as a weed, planting may be restricted or prohibited, so check local rules first.456

On consumption: athel is grown for shelter, not for eating or medicine. The major references reviewed do not document it as edible or medicinal, and while no specific human toxicity is reported, the tree is a strong salt accumulator and its tissues should not be assumed safe to consume.14

Sources

1. Tamarix aphylla, athel tamarisk — USDA Forest Service, Fire Effects Information System
2. Tamarix aphylla — Ilan Nursery (horticultural profile)
3. Tamarix aphylla — Invasive Plant Atlas of the United States
4. Tamarix aphylla — Wikipedia
5. Tamarix aphylla profile — California Invasive Plant Council (Cal-IPC)
6. Athel pine (Tamarix aphylla) — Weeds of Australia
7. Tamarix aphylla — Texas Invasives