Morocco divides into distinct agricultural and topographical zones determined by elevation and rainfall. The coastal plains along the Atlantic receive 400 to 800 millimeters of rain annually, supporting wheat, barley, and citrus cultivation. The Rif Mountains in the north receive over 800 millimeters in some areas, creating conditions for cannabis cultivation that has persisted despite government eradication programs begun in the 1990s. The High Atlas range creates a rain shadow effect, with northern slopes receiving adequate moisture while southern slopes transition rapidly into semi-arid conditions. The Middle Atlas holds Morocco's most extensive remaining cedar forests, covering approximately 134,000 hectares according to forestry surveys from the early 2000s, though this figure represents significant decline from historical coverage.
The Souss Valley between the High Atlas and Anti-Atlas ranges produces roughly 80 percent of Morocco's citrus exports according to agricultural ministry data. Irrigation systems here date to Almohad engineering in the 12th century, expanded under French Protectorate administration between 1912 and 1956. The valley floor lies between 200 and 400 meters elevation, creating microclimates that allow cultivation of oranges, clementines, and early vegetables for European markets. Traditional khettara systems, underground channels similar to Iranian qanats, still function in some areas though concrete-lined canals have replaced most since independence. The Draa Valley extending southeast from Ouarzazate once supported extensive date palm cultivation, with historical accounts from the 18th century describing continuous palm groves for over 200 kilometers. Drought cycles in the 1980s and 2000s reduced groundwater levels, causing abandonment of lower valley settlements and reduction of cultivated area.
The High Atlas contains Morocco's only significant mountain pastures, called agdal, managed through communal agreements that close grazing areas during spring growth periods. These agreements, some documented in written form from the 16th century, specify opening dates typically in late July or August depending on elevation. Berber transhumance patterns move flocks from lowland winter pastures at 800 meters to summer pastures above 2,500 meters, covering distances of 50 to 100 kilometers. The Ministry of Agriculture estimated in 2010 that approximately 2 million sheep and goats participate in these movements annually. Winter snowpack in the High Atlas provides the primary water source for Marrakech and surrounding plains through rivers including the Oum Er-Rbia, Morocco's longest permanent river at 555 kilometers. The Oum Er-Rbia basin supports approximately 1.3 million hectares of irrigation according to basin authority reports from 2008.
Argan trees grow only in southwestern Morocco between Essaouira and the Anti-Atlas, covering approximately 828,000 hectares as of a 2017 UNESCO biosphere reserve assessment. These trees survive in areas receiving as little as 250 millimeters of annual rainfall, with root systems extending 10 meters deep to access groundwater. Traditional production involves collecting fallen fruit, extraction by cooperative women's groups, and cold pressing to yield oil. The cooperative model began expanding in the 1990s under development programs, with the Moroccan government reporting 300 registered cooperatives by 2010. Production volume reached approximately 4,000 tons annually in the mid-2010s according to agricultural export statistics. Trees require 5 to 6 years to produce fruit and live 150 to 200 years under typical conditions. Overgrazing by goats, which climb trees to eat leaves and fruit, has reduced regeneration rates in areas outside protected zones.
The Sahara covers all Moroccan territory south of the Anti-Atlas, representing roughly 40 percent of the country's area depending on where northern boundaries are drawn. Precipitation drops below 100 millimeters annually, with some areas recording less than 25 millimeters. Erg Chebbi near Merzouga rises to 150 meters above the surrounding hamada, or rock desert, with individual dunes shifting several meters annually under prevailing winds. Erg Chigaga in the Draa Valley region extends approximately 40 kilometers in length and 15 kilometers in width. Desert agriculture concentrates in oases fed by underground aquifers, with date palms providing shade for fig trees, pomegranates, and vegetables grown underneath. The Tafilalt oasis near Erfoud historically contained over 800,000 date palms according to French colonial surveys from the 1930s, though subsequent drought and groundwater depletion reduced this number substantially.
The Middle Atlas plateau between 1,200 and 2,000 meters elevation receives sufficient rainfall to support agriculture without irrigation in normal years. French colonial authorities identified this region for European settlement in the 1920s and 1930s, establishing farms growing wheat and raising cattle on land reorganized under colonial tenure laws. The town of Ifrane, built in 1929 as an administrative center, features architecture mimicking Alpine styles, with peaked roofs designed for snow loads that occur most winters. The plateau experiences winter temperatures regularly below freezing, with Ifrane recording Morocco's lowest measured temperature of minus 23.9 degrees Celsius in February 1935. Cedar forests covering slopes between 1,400 and 2,400 meters contain Cedrus atlantica, growing to 40 meters height with trunk diameters exceeding 2 meters in old-growth specimens. These forests support Barbary macaque populations, the only macaque species native to Africa and the only wild primate population in Morocco.
The Rif Mountains paralleling the Mediterranean coast rise abruptly from sea level to over 2,400 meters at Jbel Tidirhine within 40 kilometers. Steep slopes and high rainfall created limited agricultural potential for grain crops, leading to widespread cannabis cultivation beginning in the 15th century according to historical accounts. The Moroccan government launched eradication programs in the 1990s under international pressure, reducing cultivation area from an estimated 134,000 hectares in 2003 to approximately 47,000 hectares by 2014 according to United Nations Office on Drugs and Crime surveys. These same surveys documented shifts to higher-potency varieties and more intensive cultivation practices. The Rif's northern slopes receive orographic precipitation from Mediterranean weather systems, with some areas exceeding 2,000 millimeters annually, among the highest rainfall in North Africa. This moisture supports dense maquis vegetation including wild olive, carob, and various oak species.
Atlantic coastal plains from Tangier to Agadir contain Morocco's most intensive modern agriculture. Greenhouse cultivation near Agadir produces tomatoes, peppers, and green beans for European markets, with exports reaching approximately 700,000 tons annually by 2018 according to agricultural ministry statistics. The Gharb plain north of Rabat, drained and developed under French administration in the 1930s through 1950s, produces rice, sugar beets, and cotton on approximately 250,000 hectares. The Office Régional de Mise en Valeur Agricole du Gharb, established in 1966, manages irrigation infrastructure including canals drawing from the Sebou River. Sugar beet processing plants at Sidi Slimane and Mechra Bel Ksiri operate during harvest seasons from April through June. Eucalyptus trees planted as windbreaks and for timber during the colonial period now cover extensive areas, with forestry reports from 2005 estimating over 50,000 hectares in the Gharb alone.
The Anti-Atlas range south of the High Atlas reaches maximum elevation of 2,531 meters at Jbel Aklim but consists primarily of lower, heavily eroded mountains exposing Precambrian basement rocks. Rainfall rarely exceeds 200 millimeters annually, limiting agriculture to scattered oasis settlements in valleys. Saffron cultivation in the Taliouine area produces approximately 3 tons annually according to cooperative data from 2016, with bulbs planted at elevations between 1,200 and 1,800 meters. Each flower produces three stigmas harvested by hand during a two-week period in late October or early November, requiring approximately 150,000 flowers to yield one kilogram of dried saffron. Almond trees grow on terraced slopes without irrigation, producing nuts during years with adequate winter rainfall. These same slopes support wild argania in lower elevations, creating a transition zone between mountain and desert ecosystems.
The Souss-Massa region south of Agadir combines intensive coastal plain agriculture with arid interior zones. The Souss River, flowing 180 kilometers from the High Atlas to the Atlantic, provides irrigation water distributed through canal systems to approximately 70,000 hectares. Banana plantations along the coast produce roughly 300,000 tons annually according to export data from 2017, grown under plastic sheeting that moderates temperature and reduces water loss. Citrus groves inland from Agadir cover approximately 15,000 hectares, with clementines harvested from November through January for immediate export. Groundwater extraction through tube wells increased dramatically after 1980, with some aquifers showing drawdown rates of 1 to 2 meters annually according to hydrological surveys from the 2000s. Government regulations implemented in 2016 aimed to limit new well permits, though enforcement remains inconsistent according to agricultural development reports.
The Dades Valley cutting through the southern High Atlas creates a strip of intensive cultivation between barren slopes rising over 1,000 meters on either side. Villages occupy alluvial fans where side valleys meet the main channel, with irrigation canals drawing water through earthen channels rebuilt annually after spring floods. Roses grown for cosmetic distillation cover approximately 4,000 hectares in the valley near Kelaat M'Gouna, harvested during a two-week period in May. The annual Rose Festival, established in 1967, coincides with peak harvest when flowers must be picked before heat reduces oil content. Distillation produces approximately 3,500 kilograms of rose oil annually according to cooperative production figures from 2015. Walnut trees planted along field boundaries reach productive maturity after 10 to 12 years, with individual trees yielding 20 to 40 kilograms of nuts in good years.
The Moulouya River flowing 520 kilometers from the High Atlas to the Mediterranean near Saïdia represents Morocco's second-longest permanent watercourse. The Mechraa Hammadi dam, completed in 1955, and Mohammed V dam, completed in 1967, control flow for irrigation and flood control. Approximately 70,000 hectares in the lower Moulouya basin receive irrigation water according to basin authority data from 2012. This area produces wheat, sugar beets, and citrus, with agricultural development intensifying after dam construction enabled year-round water delivery. The river mouth supports wetlands designated as a Ramsar site in 2005, covering approximately 3,000 hectares and providing habitat for greater flamingos, marbled teals, and other waterfowl. Sediment retention behind dams has reduced deposition in the delta, causing erosion of wetland areas documented through satellite imagery comparing conditions in 1984 and 2016.
Olive cultivation occurs throughout Morocco's northern regions receiving over 350 millimeters annual rainfall. The Ministry of Agriculture reported approximately 1 million hectares of olive groves in 2018, producing roughly 1.5 million tons of olives in good years. The National Olive Office, established in 1999, promotes expansion through subsidized planting programs, with a stated goal of reaching 1.2 million hectares by 2020. Traditional groves in the Rif and Middle Atlas receive no irrigation, producing crops dependent on rainfall patterns that vary substantially between years. Modern intensive plantations near Marrakech and in the Tadla plain employ drip irrigation and mechanized harvesting, achieving yields of 6 to 8 tons per hectare compared to 1 to 2 tons in traditional systems. Harvest occurs from November through January, with olives destined for oil production picked later than those for table use.
The Tadla plain between Beni Mellal and the Oum Er-Rbia River represents Morocco's most extensively irrigated agricultural zone. The Bin el Ouidane dam, completed in 1953 with a capacity of 1.3 billion cubic meters, and Ahmed El Hansali dam, completed in 2001 with a capacity of 740 million cubic meters, regulate flow from the High Atlas. Approximately 120,000 hectares receive irrigation through canal systems managed by the Office Régional de Mise en Valeur Agricole du Tadla, established in 1960. Crops include wheat, alfalfa, sugar beets, and olives, with cultivation intensities and crop choices varying based on water allocations that fluctuate with reservoir levels. Drought periods in the 1980s, 1990s, and 2000s resulted in reduced allocations, with some areas receiving 50 percent or less of standard water rations during critical periods. Citrus cultivation expanded in this area during the 1970s and 1980s, reaching approximately 20,000 hectares by 1990, though subsequent droughts limited further expansion.
Pastoral systems dominate land use in areas receiving between 200 and 400 millimeters of rainfall annually. The Ministry of Agriculture estimated in 2014 that approximately 21 million hectares, roughly 30 percent of Morocco's total area, serves as rangeland supporting 17 million sheep, 5.8 million goats, and 2.7 million cattle. Stocking rates often exceed sustainable levels, with estimates from the 1990s suggesting actual grazing pressure at 200 percent of carrying capacity in many areas. This overgrazing reduces perennial grass cover, allowing annual species and unpalatable shrubs to dominate. The alfa grass that historically covered extensive areas of the eastern High Plateaus has declined substantially, with collections for paper production between 1930 and 1980 removing vegetation faster than regeneration occurred. Government attempts to regulate grazing through permit systems and seasonal closures face enforcement challenges due to limited personnel and resistance from herders exercising customary access rights.
The Haouz plain surrounding Marrakech receives irrigation from the N'Fis, Rheraya, and Ourika rivers descending from the High Atlas. Traditional khettara systems, some dating to the Almoravid period in the 11th century, still deliver water to palm groves within and around Marrakech, though many have fallen into disrepair since the 1970s as tube wells offered easier access to groundwater. The plain supported extensive wheat and barley cultivation under traditional rotation systems, with fields lying fallow alternate years to restore soil moisture and fertility. French colonial administration in the 1930s introduced irrigation perimeters growing cotton, sugar beets, and vegetables for urban markets. Post-independence development expanded irrigation infrastructure, with approximately 90,000 hectares receiving water by 2010 according to regional agricultural office data. Groundwater levels in the Haouz aquifer declined an average of 2.5 meters between 1970 and 2000 based on monitoring well measurements, prompting restrictions on new well permits that proved difficult to enforce.
The Rif interior valleys such as those of the Oued Laou and Oued Nekkor support small-scale agriculture combining fruit trees, vegetables, and cannabis. Terracing on steep slopes retains soil and allows cultivation on gradients exceeding 30 degrees in some locations. Stone retaining walls, built without mortar, require regular maintenance to prevent collapse during heavy rains. Fig and almond trees occupy terraces too steep or dry for annual crops, with harvest occurring in late summer when other agricultural activities are minimal. Villages occupy defensive positions on slopes above valley floors, a pattern established during periods of insecurity prior to French occupation in 1926. Roads into many Rif valleys remained unpaved until the 1990s or later, with some areas accessible only by foot or mule until the 2000s. This isolation contributed to persistence of traditional agricultural systems and limited integration with commercial markets until recent decades.
The Atlantic coast south of Essaouira receives less rainfall than northern coastal areas, with annual totals dropping below 300 millimeters near Sidi Ifni. Argan trees dominate vegetation in this zone, with agriculture limited to valley bottoms where seasonal streams provide water. Acacia trees, both native species and introduced Acacia cyanophylla from Australia, stabilize sand dunes encroaching on agricultural areas. The Moroccan government planted extensive acacia stands during the 1970s and 1980s as part of desertification control efforts, with claims of over 100,000 hectares planted, though survival rates varied substantially. Native vegetation includes jujube, dwarf palm, and various xerophytic shrubs adapted to long dry seasons. Goat herds graze these areas year-round, with herders moving frequently to avoid overusing any single area. Milk production from goats provides income and nutrition, though yields remain low compared to cattle, averaging 0.5 to 1 liter daily per animal during productive periods.