How to grow cocoa

Start your beans in the nursery about six months before you plan to plant out — count back from the start of your rains, so the plants are ready the moment the ground is moist enough to plant.

You have two ways to get plants: grow from seed, or set out a grafted plant (a shoot cut from a chosen good tree and joined onto a young rootstock — it can bear sooner). If you grow from seed, take beans only from a healthy, heavy-bearing tree, and sow them fresh — cocoa seed dies within a few days of leaving the pod, so it cannot be dried and kept like grain.

Fill planting bags (or a raised nursery bed) with good topsoil mixed with well-rotted manure or compost. Push one bean in on its side, about a finger-joint deep (3–5 cm) — no deeper.

Build a shade roof over the nursery — palm fronds, grass, or shade netting on a simple frame — so the seedlings get soft, broken light and never full sun. Aim for about half shade.

Water gently and often to keep the soil moist but never swampy — cocoa seedlings hate both drying out and sitting in water. Keep the bags weed-free.

In the last few weeks, open the shade a little at a time to harden the plants to brighter light. Plant out when they are about knee-high (≈45 cm) with several firm, dark-green leaves.

In the six months before you plant out, choose a deep, fertile, moist but well-drained site, sheltered from strong wind — a gentle valley, or near (not in) a stream, is ideal. Cocoa hates both drought and standing water.

Plant your temporary shade first: fast-growing banana or plantain among the future cocoa positions. They throw shade within months and feed your family while the cocoa is still years from bearing.

Plant permanent shade trees too — scattered taller trees, ideally nitrogen-fixing kinds such as Gliricidia or Albizia, which shade the cocoa and feed the soil at the same time. Space them so, once grown, they cast light, broken shade, not deep gloom.

Set all this up months ahead, so the temporary shade is already casting shade on the day you plant the cocoa. Clear ground weeds along the planting lines, but keep the canopy overhead.

Plant at the start of the rains, into moist ground and under the temporary and permanent shade you set up earlier.

Space the trees three strides apart each way — about 3 m × 3 m, roughly 1,100 trees per hectare (a stride is one big step, about 1 m). Don't crowd them: cocoa branches out wide, and this spacing is fixed for the life of the orchard.

Dig a hole a little wider and deeper than the plant's bag. If it is in a bag, slit and slide the bag off without breaking the ball of soil, and set the plant so its soil surface sits level with the ground — not deeper.

Firm the soil gently around it and water it in well.

Mulch heavily all around the young tree — a thick blanket of grass, leaves or old banana trash — but keep it about a hand-span (20 cm) clear of the stem, to hold moisture, keep the ground cool, and feed the soil as it rots.

Once a month through the first year (starting about a month after planting out), walk the whole plot and look at the trees one by one.

Cocoa swollen shoot virus (CSSV): look for swollen, thickened stems and shoots, red streaks running along the veins of young leaves, and yellow blotchy mottling on the leaves. There is no cure — dig out and destroy any tree you suspect (this is called roguing), and take out a ring of its close neighbours too, as they are likely already infected.

Capsids (also called mirids — small sap-sucking bugs): look for dying-back shoot tips and dark, sunken spots on the young green stems where they have fed.

Mealybugs: tiny white, cottony specks clustered on shoots and in the branch forks, often with ants running among them. They carry the swollen shoot virus from tree to tree, so watch those trees closely and knock back the ant trails that farm them.

Black pod: on any early pods, watch for a hard brown-to-black patch that spreads until the whole pod goes black and the beans inside rot (much more on this once the trees are bearing).

Every month or so through the first year, clear the weeds from the ring around each young tree — about an arm's length out — so nothing competes with it for water.

Weed by hand, or hoe only shallowly near the tree — cocoa's feeding roots run just under the surface and are easily cut.

Top up the mulch as it rots down, keeping a thick layer around (but not touching) each stem to hold moisture and smother weeds.

In dry weather, water the young trees — they have few roots yet and dry out quickly. Keep the soil moist, never bone-dry and never swampy.

Every month through these building years (roughly years one to three after planting out), walk the plot and check each tree's trunk, shoots and leaves.

Cocoa swollen shoot virus (CSSV): swollen stems, red vein-banding on the new (flushing) leaves, and yellow leaf mottle. Dig out and burn any suspect tree — there is no cure — and take out the ring of trees around it too.

Capsids / mirids (sap-sucking bugs): dying-back shoot tips and dark, sunken patches on the green stems; a badly-hit tree looks scorched and stunted.

Mealybugs: white, cottony clusters on shoots and branch forks, tended by ants — they spread the virus, so watch those trees hardest.

Mark or note where you find each problem so you can follow it and act.

Thin the shade over the growing years toward about a third-to-a-half open — enough sun to feed the tree, enough shade to keep the air moist. Cut back or remove the temporary banana shade as the cocoa canopy fills in.

Keep a thick layer of leaf litter and mulch on the ground under the trees. Let fallen cocoa leaves and prunings lie, and add grass or banana trash.

Do not rake the plot bare — that damp litter is the breeding ground for the pollinating midges (tiny flies, smaller than a mosquito) you will depend on for every pod.

Keep the floor moist and shaded through dry spells.

In the first years after planting out, keep one strong, upright main stem and let the main branches form at a comfortable working height. Remove low, weak or crossing branches.

Cut off the chupons — the whippy upright shoots that spring from the trunk and base — unless you are keeping one to replace the main stem. They eat the tree's strength and give no pods.

Open the centre so light and air move through the canopy — an airy tree dries quickly after rain and rots far less.

Always cut out dead, broken or diseased wood and carry it right out of the plot.

Use a clean, sharp knife or saw and cut close without tearing the bark.

Right through the flowering flush, keep a thick, damp carpet of leaf litter and mulch on the ground under the trees — this is the midges' breeding ground.

Hold the humidity up: keep the light, broken shade in place and the floor moist. In dry weather, mulch more and water if you can — dry air empties the plot of midges.

Add rotting organic matter near the trees to feed the midges — leaves, prunings, and husks from healthy pods (never from diseased ones).

Do not sweep or clean the plot bare during flowering.

Every week or so during flowering, look over the trunk and main branches: are the little flowers turning into small pods (about thumb-size), or just opening and dropping?

Some drop is normal — many tiny young pods (called cherelles) shrivel and blacken on their own. This cherelle wilt is the tree shedding what it cannot feed — not a disease.

But if hardly any flowers set pods, flush after flush, treat it as poor pollination: build up the litter, mulch, shade and humidity the midges need (see the litter task).

Keep the plot moist and littered, and watch whether the next flush sets better — that tells you it is working.

Every week as the pods develop, walk the trees and look over the pods for black pod: a hard brown-to-black patch that starts small and spreads until the whole pod is black; inside, the beans are rotted and useless.

Cut off and carry away every diseased pod — the black ones, any just starting to spot, and any mummified (dried, shrivelled) pods still hanging. This sanitation (keeping the plot clear of sick pods) is the main control — one black pod left on the tree infects its neighbours.

Bury or heap the diseased pods well away from the trees — never drop them under the canopy, where the rot splashes back up onto healthy pods.

Keep the plot drained and airy — clear waterlogged spots and keep the canopy open (prune, and hold the moderate shade) so pods dry fast after rain, because black pod thrives in wet, still air.

In the wet season, back up your weekly clean-up with copper spray on a timed schedule (see the copper task).

Feed potassium while the pods are filling — your recommendation gives the exact amount and product for your trees and soil (don't guess the rate).

Spread it evenly on the ground under each tree's canopy — out toward the edge of the leaves (the drip line), where the feeding roots are — not piled against the trunk.

Apply onto moist ground (after rain or watering) so it dissolves down to the roots, and cover it with the leaf litter where you can.

Keep the mulch and litter in place — as it rots it releases potassium of its own, and it holds the moisture the roots need to take the feed up.

Spray copper fungicide during the wet season as a back-up to removing sick pods. Copper is a protectant — it coats the pod surface and blocks new infection, but cannot cure a pod already rotting — so it must go on before the rot arrives.

Start at the first black-pod spots, then repeat on a timed schedule — about every three to four weeks while the weather stays wet (your recommendation gives the product and amount).

Cover the pods well, especially on the trunk and lower branches, where black pod strikes first.

Keep spraying only while it is wet; once the rains ease and the pods dry fast, weekly sanitation alone will usually hold it.

Respect the pre-harvest interval — the waiting time on the label between spraying and picking — so no spray residue reaches the beans.

Check ripeness (this is what tells you it is time): the pod is fully coloured for its type — green pods turn yellow, red or purple pods turn orange — and when you tap it, it sounds hollow and the loose beans rattle faintly inside.

Go through the trees on a round every 2–3 weeks, taking the ripe pods and leaving the unripe ones to keep filling.

Cut each ripe pod off with a sharp knife (or a pruning hook on a pole for high ones) — snip the stalk cleanly, and never pull or twist the pod off.

Leave the pod cushion — the woody bump the pod grew from — undamaged; next season's flowers and pods come from that same spot.

Gather the picked pods and open and process them within a day or two (see the ferment-and-dry task).

If a pod fails the ripeness check → do this: if a pod you thought was ripe is green and pale inside, it wasn't ready — leave similar pods longer and judge by full colour plus the hollow rattle. If it is over-ripe (beans sprouting or discoloured inside), you are picking too late — shorten your rounds so pods don't hang past ripe.

Within a day or two of harvest, break the pods open (crack them with a wooden club, not a metal blade that cuts the beans) and scoop out the wet, pulp-covered beans. Throw out any black, flat or already-sprouted beans.

Ferment the beans for five to seven days — heaped on banana leaves, or in a wooden box with drain holes, covered with leaves or sacking to hold the heat. The pulp liquid drains away and the mass heats up.

Turn the beans every couple of days (say around day 2–3, then again) so they ferment evenly — this is what builds the chocolate flavour and turns the beans brown inside.

Then sun-dry the beans slowly on raised mats, racks or a clean tarpaulin — never on bare ground, which pushes damp back in and adds mould and dirt. Turn them often; take about one to two weeks depending on the sun, until they are dry to about 7% moisture — a well-dried bean is hard and snaps crisply, and a handful rustles.

Store the dried beans dry — in clean sacks, off the floor, away from damp and from strong smells (cocoa soaks up odours).