Planting Regime and Agronomy · Cashew · Ghana Agribusiness Playbook

Planting Regime and Agronomy · Pillar 04

Ghana has spent years planting cashew on out-of-date rules, at spacings never tested with local data, and then failing to thin. New Ghana research points to closer planting in the Guinea Savanna, and it changes the economics: in a Cocoa Research Institute of Ghana trial at Bole, 4 by 8 metre spacing gave about 2.5 times the early yield per hectare of the standard 10 by 10 metre spacing.¹ The modern planting regime and the service businesses it creates are set out below.

Cashew is well suited to Ghana, and more than 60 percent of the country’s land is suitable for the crop.¹ Reaching the 300,000-tonne target of the 2017 to 2027 Cashew Development Plan,² against about 255,000 tonnes produced in 2025,³ depends on getting far more trees planted, and planted well.

A well-kept cashew plantation in the Bono region of Ghana, rows of grafted cashew trees with dense green canopies in even spacing, red laterite soil, warm transition-zone light, documentary photograph, natural light, no text, no watermark

The return is decided at planting

The choice: A well-kept cashew plantation in the Bono region: the return is decided at planting.

>60%

of Ghana suitable for cashew

4 x 8 m

best spacing in Guinea Savanna trial (312/ha)

1-2 yrs

to bear after top-working

Map of Ghana's cashew growing zones, with the Bono, Bono East and Ahafo transition zone as the heartland — Figure 4.1 Cashew is grown across most of Ghana's 16 regions, with the Bono, Bono East and Ahafo transition zone as the heartland.

What this shows

More than 60 percent of the country is suitable, so the task is getting trees planted well, on the right ground and at the right density.

The tree needs 800 to 1,600 millimetres of rain a year and a pronounced dry season of five to seven months, with a dry spell at flowering; too much rain at flowering causes flower drop and disease.⁴ The heartland is the forest-savanna transition zone of Bono, Bono East and Ahafo, and planting is spreading into the Guinea savanna further north.

A Ghanaian agronomist standing at the edge of a cleared cashew planting site, holding a tablet displaying a soil and land-suitability map overlay, newly pegged planting lines marked with stakes in red laterite soil behind him, transition-zone light, documentary photograph, natural light, warm earthy tones, no text, no watermark

Right land, checked digitally

Satellite and phone-mapped suitability: placing trees on the right land before the first hole is dug.

🌰 Spacing and density: the recommendation just changed 🌰

For decades Ghana planted cashew at 12 by 12 metres or 10 by 10 metres, spacings adopted without local trial data, which left orchards with gaps, weeds and low output per hectare.¹

A Cocoa Research Institute of Ghana trial at Bole, run from 2010 to 2018, provides the first local evidence. Over yield years three to eight, closer spacing gave consistently and significantly higher yield per hectare without harming individual trees, and there was no canopy crowding over the eight years of the trial.

The authors recommend planting grafted clones in the Guinea Savanna at 4 by 8 metres, about 312 trees a hectare, keeping every tree for up to eight years and then thinning to 8 by 8 metres once the canopies begin to shade each other.¹

A young high-density cashew orchard in Ghana planted at close 4 by 8 metre spacing, neat straight rows of knee-high grafted clone seedlings each pegged with a stake, red laterite soil freshly cleared, a farmer walking between the rows, transition-zone light, documentary photograph, natural light, no text, no watermark

312 trees a hectare

4 by 8 metres: about 2.5 times the early yield of the standard 10 by 10 metres in the Bole trial.

Read the three spacings one at a time

The tested high-density regime

In the CRIG Bole trial, grafted clones at 4 by 8 metres gave significantly higher yield per hectare over yield years three to eight, with no canopy crowding over the eight years of the trial. The authors advise thinning to 8 by 8 metres once the canopies begin to shade each other.

Trees per hectare: About 312
Where it came from: CRIG Bole trial, 2010 to 2018
Cumulative yield, six yield years: About 1,913 kg/ha
Thinning: None for up to eight years, then to 8 × 8 m

Cashew planting spacings: the old rules against the 4 by 8 metre spacing tested at Bole
Spacing	Trees per hectare	Where it came from	Cumulative yield, six yield years	Thinning	Reading
12 × 12 m (old rule)	~69	Adopted without local trial data	~602 kg/ha	Not needed, but the gaps waste land	Gaps, weeds, low output
10 × 10 m (today's standard)	~100	Adopted without local trial data	~763 kg/ha	Often skipped when canopies close	The standard the new spacing is compared with
4 × 8 m (recommended, Guinea Savanna)	312	CRIG Bole trial, 2010 to 2018	~1,913 kg/ha	None for up to eight years, then thin to 8 × 8 m	About 2.5 times the early yield of 10 × 10 m

Source: Konlan et al. (2026), Cocoa Research Institute of Ghana trial at Bole, 2010 to 2018.

Planting spacing against per-hectare yield at Bole: 4 by 8 metres gave about 2.5 times the yield of 10 by 10 metres — Figure 4.2 Closer spacing lifts per-hectare yield: over six yield years at Bole, 4 by 8 metre planting gave about 2.5 times the yield of the standard 10 by 10 metre spacing and about three times that of 12 by 12 metres.

What this means. This is a rare case where the science directly lifts the business case. Moving from today’s standard 10 by 10 metres (about 763 kilograms a hectare over six yield years) to 4 by 8 metres (about 1,913 kilograms) gave about 2.5 times the cumulative early yield on the research station, and needs no thinning for up to eight years.¹ For an investor costing a new plantation, the density decision alone changes the return. It is also why the certified grafted clones from Pillar 1 matter: their smaller canopies are what make high-density planting work.¹

~2.5×

the cumulative early yield of the standard 10 by 10 metre spacing

763 to 1,913

kilograms a hectare over six yield years, moving from 10 by 10 to 4 by 8 metres

🌰 Establishing the orchard: dry-season work, wet-season planting 🌰

Good establishment is a sequence of tasks. The heavy work (clearing, ploughing, marking the field and digging planting holes) is done in the dry season, one to three months before the rains. Planting holes are dug about 50 by 50 by 50 centimetres, with the topsoil separated and returned mixed with about 20 grams of NPK fertiliser and 5 to 15 kilograms of well-rotted manure.⁴

Grafted seedlings are transplanted at the onset of the first rains, keeping the graft union above the soil, pegged against the wind and watered in. In the first two years the grower removes suckers at and below the graft union, which would otherwise smother the scion, builds an umbrella canopy by light formative pruning, and fills any gaps promptly.⁴

Dry-season land preparation for a cashew orchard in northern Ghana, a labourer digging a fifty-centimetre planting hole with topsoil piled separately, wooden pegs marking a grid across cleared red laterite ground, a tractor ploughing in the background, hazy harmattan light, documentary photograph, natural light, no text, no watermark

One to three months before the rains

Dry-season groundwork: clear, mark the grid and dig the holes before you plant.

Cashew orchard establishment in five steps, from dry-season groundwork through wet-season planting to canopy and protection — Figure 4.3 Cashew orchard establishment in five steps: dry-season groundwork, wet-season planting, then canopy and protection.

What this shows

Establishment runs on the calendar: dry-season groundwork of clearing, marking and digging 50 by 50 by 50 centimetre holes, then planting at the first rains, then two years of de-suckering, formative pruning and gap-filling to build the canopy.

Light formative pruning through years one and two shapes the umbrella canopy the mature tree carries, and removing suckers at and below the graft union keeps the scion alive. Filling gaps promptly keeps the stand even.

50 × 50 × 50 cm

planting holes, with about 20 g of NPK and 5 to 15 kg of manure

1 to 3 months

before the rains for the dry-season clearing and hole-digging

🌰 The immature years: managing the cash-flow gap 🌰

Cashew does not pay at once. Grafted trees may flower in the year they are planted,⁴ but meaningful nut revenue starts only in the third or fourth year, the tree reaches mature yield around year seven, and it then bears for 10 to 30 years.⁵

Those first lean years are the main reason smallholders hesitate to plant, and the main risk a financier sees. The tested answer in Ghana is intercropping: growing maize, yam, groundnut or sorghum between the young trees during the first four or five years provides food and cash, controls weeds, and does not significantly reduce early cashew yield, with maize and yam intercrops found profitable in a Ghana trial by Opoku-Ameyaw and colleagues.⁵

A young cashew orchard in Ghana intercropped with tall green maize and mounded yam between the widely spaced saplings, a woman weeding among the crops, red soil, lush early-wet-season growth, documentary photograph, natural light, no text, no watermark

Food and cash through the lean years

Intercropping: maize and yam bridge the gap without cutting early nut yield.

The bearing calendar. The tree can flower early but pays late: no meaningful nuts until year three or four, mature yield around year seven, then decades of bearing. The intercrop fills the lean window between planting and the first real harvest.

The immature-year gap is a financing and services product, as well as a farming problem. Because the tree earns nothing for its first two years, the grower who plans the bridge keeps the orchard, while the one who does not often abandons it just as pruning and de-suckering decide its future.

Year 3-4

when the first meaningful nut revenue arrives

10 to 30 yrs

the bearing life once the tree reaches mature yield around year seven

🌰 Opportunity: the immature-year gap is a financing and services product 🌰

01

Turnkey high-density establishment. Sell plantation investors a complete 4 by 8 metre establishment package built on certified clones, priced with a three-year intercrop cash-flow plan so the client survives the gestation years (Pillars 1 and 5).

02

Intercrop input-and-offtake finance. An intercrop input-and-offtake bundle de-risks the gestation period for lenders and GIRSAL-backed loans against a young orchard (Pillar 5).

03

Mechanised land preparation. The dry-season clearing and hole-digging is the most labour-intensive step, and a tractor-hire and hole-digging crew, on the TROTRO Tractor model, feeds every new planting.

🌰 Rehabilitating old orchards: top-working for a fast return 🌰

Ghana has a large stock of ageing, low-yielding, seedling-origin trees. Cutting them down and replanting means waiting years for a new crop. Top-working avoids that wait: the crown of an underperforming tree is cut back and elite clone shoots are grafted onto its established root system.

Trees under fifteen years old give the best results, and because the root system is already there, a top-worked tree can bear improved nuts within one to two years rather than three or four.⁶ Improved planting material has tripled, and in some cases quadrupled, cashew productivity in parts of West Africa.⁶

A long-standing Ghana benchmark is the African Development Bank-funded Cashew Development Project of the 2000s, during which yields in project areas rose from about 200 to about 550 kilograms a hectare.⁷

ACTION POINTS. For a farmer or investor with existing orchards: audit the trees (age under 15 years, low yield, small nuts, healthy trunk); top-work the best candidates with certified scions at the start of the rains, after harvest; expect a return within one to two years; and pair the rehabilitation with the weaver-ant biocontrol and drying improvements from Pillar 3 to lift both yield and price at once.

A woman harvesting cashew apples and nuts in a well-established Ghanaian orchard

The prize

Nuts off a well-established orchard: the prize the planting regime is chasing.

1 to 2 yrs

to bear improved nuts after top-working, against three or four for a new tree

200 to 550

kilograms a hectare, the yield rise in the AfDB Cashew Development Project areas

MARKET SIGNAL: AI AND DIGITAL OPENING. Getting establishment right is increasingly a data problem. Feasible now: satellite and phone-mapped land-suitability and orchard records to place trees on the right land at the right spacing, mechanisation on demand (the tractor-hire model TROTRO Tractor runs in Ghana) to prepare land without owning a machine, and digital agronomy advisory (Farmerline, Complete Farmer) that pushes the 4 by 8 metre regime, the pruning calendar and fertiliser timing to a farmer's phone. Commercial-only for now: drone mapping and variable-rate application. The opening is a digitally-run establishment-and-rehabilitation service (Pillar 7).

🌰 The risks that sit inside the planting decision 🌰

A gappy old-rule cashew orchard with wide spacing, weeds between the trees and low output

Planting at the wrong spacing, then not thinning

MEDIUM-HIGH

What it is

Ghana's old 10 by 10 or 12 by 12 metre rule was never tested locally and leaves gaps, weeds and low output; farmers also refuse to thin.

Evidence

In a Bole research-station trial, a 4 by 8 metre planting gave about 2.5 times the cumulative early nuts of 10 by 10 metres, with no crowding to eight years.¹

Who it hits

New plantations laid out on the old default.

How to manage it, and the opening

In the Guinea Savanna, plant clones at 4 by 8 metres and plan to thin to 8 by 8 metres when canopies close; the opening is a turnkey high-density establishment service.

A young cashew orchard with no intercrop and no bridging income, under-managed in its gestation years

Skipping the immature-year plan

HIGH

What it is

Cashew earns nothing for the first two years, so a farmer with no bridging income abandons or under-manages the young orchard.

Evidence

First meaningful nuts come only in year three or four; maize and yam intercrops were profitable in the gap in a Ghana trial.⁵

Who it hits

Smallholders and financiers who underprice the gestation period.

How to manage it, and the opening

Bundle a three-year intercrop cash-flow plan with establishment finance; the opening is intercrop input-and-offtake finance.

A dry-season bushfire sweeping the edge of a young cashew plantation

Bushfire (dry-season fire)

HIGH

What it is

The long dry season that suits cashew is also fire season, and a single fire can destroy a young orchard and the intercrop investment behind it.

Evidence

Fires in January 2022 destroyed more than 5,000 acres of cashew in 24 communities of Banda District, and fires still burn cashew farms each dry season, as at Asueyi in Techiman North in January 2026.

Who it hits

Growers with young orchards, and intercrop farmers whose dry crop residue becomes fuel around the trees.

How to manage it, and the opening

Fire belts of 20 to 30 metres; community fire-volunteer squads; by-laws; agroforestry buffers; cashew itself as a living firebreak. The opening: firebelt-ploughing services and community fire-prevention programmes.

An underperforming cashew tree planted from unimproved material in a Ghanaian orchard, the yield cost of the wrong planting choice

🌰 Key takeaways 🌰

01

More than 60 percent of Ghana is suitable for cashew, and the 300,000-tonne target of the 2017 to 2027 Cashew Development Plan depends on getting far more trees planted, and planted well.

02

Ghana now has local evidence for closer planting. In the Guinea Savanna, plant certified grafted clones at 4 by 8 metres for about 2.5 times the early yield of the standard 10 by 10 metre spacing; establish in the dry season and plant at the rains; bridge the three-to-four-year gestation with maize and yam intercrops tested in Ghana; and top-work old orchards for a return within one to two years. The businesses here are establishment packages, top-working crews, intercrop financing and mechanised land preparation.

03

Good establishment is a sequence of tasks: clear and dig 50 by 50 by 50 centimetre holes in the dry season, plant grafted seedlings at the onset of the rains, and de-sucker and prune through the first two years.

04

Cashew earns nothing for its first two years, so bridge the gestation with maize and yam intercrops, found profitable in a Ghana trial, that feed the household and control weeds without significantly cutting early nut yield.

05

Top-work old seedling trees under fifteen years old for improved nuts within one to two years, and pair the work with weaver-ant biocontrol and better drying.

Where this connects. The material this pillar plants was chosen in Pillar 1, where the certified grafted clones whose smaller canopies make 4 by 8 metre density work are set out. The weaver-ant biocontrol and drying improvements that lift both yield and price sit in Pillar 3, and pair naturally with a rehabilitated orchard. What the establishment regime and the immature-year bridge cost, and how they flow through to a margin, is Pillar 5, while the digitally-run establishment-and-rehabilitation service the market signal points to is built in Pillar 7.

Written for each reader

🌰 Practitioner intelligence 🌰

Hover any card to pause and lift it.

For students

If you are thinking of entering, the door is a service: a grafting-and-top-working crew that rehabilitates old orchards, or a mechanised land-preparation service for the dry-season clearing. Learn top-working, because a rehabilitated tree bears improved nuts within one to two years and farmers will pay for that fast return. The trap is believing you must buy land to be in cashew; the skills of establishment and rehabilitation are the asset-light entry and they build a client base of orchard owners.

For entrepreneurs

First move: offer a turnkey high-density, 4 by 8 metre, establishment package to a plantation investor, sold with a three-year maize-or-yam intercrop cash-flow plan so the client survives the gestation years. Secure the certified clones, the intercrop inputs and the client's land-readiness before you mobilise labour. The trap is planting on the old 10 by 10 metre default and then never thinning; in the Guinea Savanna, commit to the 4 by 8 metre layout tested at Bole, which gave about 2.5 times the early yield per hectare of 10 by 10 metres.

For investors

Diligence asks: at what spacing and with what planting material is the orchard established; is there a costed plan for the immature years and an intercrop income bridge; and who manages de-suckering and formative pruning in years one and two. The thesis is that the return is set at planting: density and material decide it before the first nut. Tie disbursement to establishment milestones, survival and canopy formation, and underwrite the gestation-period cash flow.

For faculty

Assignment: have students model two orchards from the Bole spacing data, 4 by 8 metres against 10 by 10 metres, over six yield years, and calculate the cumulative yield and the value of the difference at GH¢12 a kilogram. The deliverable is a comparison table and a recommendation with the intercrop bridge costed in. It teaches how an agronomic decision, density, is also a financial one.

For ecosystem actors

The lever is to move the Bole-tested 4 by 8 metre spacing and top-working into practice: retrain extension officers, subsidise mechanised land preparation, and fund intercrop-input packages that bridge the immature years. Measure success by the share of new plantings at recommended density and by the area of old orchard rehabilitated. The failure to avoid is distributing seedlings without the agronomy, so trees go into the ground at the wrong spacing and underperform for thirty years.

For students

If you are thinking of entering, the door is a service: a grafting-and-top-working crew that rehabilitates old orchards, or a mechanised land-preparation service for the dry-season clearing. Learn top-working, because a rehabilitated tree bears improved nuts within one to two years and farmers will pay for that fast return. The trap is believing you must buy land to be in cashew; the skills of establishment and rehabilitation are the asset-light entry and they build a client base of orchard owners.

For entrepreneurs

First move: offer a turnkey high-density, 4 by 8 metre, establishment package to a plantation investor, sold with a three-year maize-or-yam intercrop cash-flow plan so the client survives the gestation years. Secure the certified clones, the intercrop inputs and the client's land-readiness before you mobilise labour. The trap is planting on the old 10 by 10 metre default and then never thinning; in the Guinea Savanna, commit to the 4 by 8 metre layout tested at Bole, which gave about 2.5 times the early yield per hectare of 10 by 10 metres.

For investors

Diligence asks: at what spacing and with what planting material is the orchard established; is there a costed plan for the immature years and an intercrop income bridge; and who manages de-suckering and formative pruning in years one and two. The thesis is that the return is set at planting: density and material decide it before the first nut. Tie disbursement to establishment milestones, survival and canopy formation, and underwrite the gestation-period cash flow.

For faculty

Assignment: have students model two orchards from the Bole spacing data, 4 by 8 metres against 10 by 10 metres, over six yield years, and calculate the cumulative yield and the value of the difference at GH¢12 a kilogram. The deliverable is a comparison table and a recommendation with the intercrop bridge costed in. It teaches how an agronomic decision, density, is also a financial one.

For ecosystem actors

The lever is to move the Bole-tested 4 by 8 metre spacing and top-working into practice: retrain extension officers, subsidise mechanised land preparation, and fund intercrop-input packages that bridge the immature years. Measure success by the share of new plantings at recommended density and by the area of old orchard rehabilitated. The failure to avoid is distributing seedlings without the agronomy, so trees go into the ground at the wrong spacing and underperform for thirty years.

Footnotes

Konlan, Sampson, Michael Teye Barnor, Alfred Arthur, Jerome Agbesi Dogbatse, Jacob Danso, Godfred Kwaku Awudzi, Moses Kwame Aidoo, and Frank Owusu-Ansah. "Growth and yield response of cashew (Anacardium occidentale L.) clones to spacing in the Guinea Savanna zone of Ghana." Agrosystems, Geosciences & Environment 9, no. 2 (2026): Article e70326. https://doi.org/10.1002/agg2.70326.↑
Business and Financial Times. "Lack of improved seedlings threatens cashew production." Business and Financial Times, 11 April 2018. https://thebftonline.com/article/lack-of-improved-seedlings-threatens-cashew-production.↑
Etefe, Juliet. "TCDA assures global buyers of cashew quality for 2026 season." Business and Financial Times, 4 February 2026. https://thebftonline.com/article/tcda-assures-global-buyers-of-cashew-quality-for-2026-season.↑
Masawe, Peter A. L., Rui B. Matos, Kouami N'djolosse, Soulé Abdoulaye Manigui, and Siaka Kodjo. Cashew cultivation in Africa. TechnoServe (with support of the U.S. Department of Agriculture), 2020. https://prod5.assets-cdn.io/event/7181/assets/8367298918-273907f108.pdf.↑
Aremu-Dele, Olufemi, Kehinde Ademola Adesanya, Bunmi Olaoluwa Olorundare, Oluwadamilola Ifedolapo Asunbo, and Elizabeth Feyisayo Odeyemi. "Intercrop practices in cashew production." World Journal of Advanced Research and Reviews 10, no. 3 (2021): 281-288. https://doi.org/10.30574/wjarr.2021.10.3.0268.↑
Akoto-Osei, Seth, and Mohamed I. Salifou. Training manual on topworking in old cashew farms. Accra: Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) / Competitive Cashew initiative (ComCashew), 2018. https://www.comcashew.org/downloads?file=files%2Fupload_comcashew%2Fdownloads%2F2023%2FManual%2FRehabilitation%2FFinal-+Manual+on+Top+working_.pdf.↑
Ministry of Food and Agriculture. Tree crops policy. Accra: Ministry of Food and Agriculture, 2012. https://www.clientearth.org/media/5mtaku1y/tree-crops-policy-ext-en.pdf.↑