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Coffee pests, diseases and growing guide for Jamaica

What goes wrong with coffee in Jamaican conditions, how to recognise it early, and what the crop needs at each stage. 3 common problems covered.

Growing conditions at a glance

Plant family	Rubiaceae
Target soil pH	5.5 – 6.5
Seedling stage	Transplant to day 60
Vegetative stage	To day 180
Flowering stage	To day 240
Typical yield	0.2 lbs per plant
Harvest	Continuous — pick repeatedly over the season

Common coffee pests and diseases

Coffee Berry Borer (CBB)

The most devastating pest of coffee worldwide. The beetle bores into the berry to reproduce.

Signs to look for

Small pinholes at the tip of the coffee berry
Berries drop prematurely
Beans inside are destroyed by larval feeding

What to do: Strict sanitation (strip harvesting). Use Broca traps with alcohol lures. Apply Beauveria bassiana.

Coffee Leaf Rust (ROYA)

The most economically important coffee disease, causing massive defoliation.

Signs to look for

Pale yellow spots on upper leaf surfaces
Orange, powdery spore masses on the underside
Severe defoliation leading to dieback

What to do: Apply Copper-based fungicides preventatively. Ensure proper pruning for light penetration.

Coffee Leaf Miner

Moth larvae that tunnel inside coffee leaves, reducing photosynthetic area.

Signs to look for

Irregular, brown necrotic blotches on leaves
Peeling the blotch reveals tiny white larvae
Severe defoliation in dry periods

What to do: Apply systemic insecticides (Imidacloprid) or contact sprays (Chlorpyrifos) if economic thresholds are exceeded.

Feeding coffee by growth stage

Stage	Nutrition	Why
Seedling	High Phosphorus (e.g. 10-20-10)	Promote root establishment in nursery bags.
Vegetative	Balanced NPK (e.g. 20-20-20)	Push vigorous green branch growth for future cherry bearing.
Flowering	High Boron and Zinc	Apply foliar micronutrients to support blossom set and prevent drop.
Fruiting	High Potassium (e.g. 15-5-20)	Maximize cherry sizing and bean density.

Questions growers ask

What are the most common coffee pests and diseases in Jamaica?

The problems growers report most often are Coffee Berry Borer (CBB), Coffee Leaf Rust (ROYA), Coffee Leaf Miner. Each one is described above with the symptoms to look for and the recommended response.

What soil pH does coffee need?

Coffee performs best in soil with a pH between 5.5 and 6.5. Outside that range nutrients become progressively less available to the plant even when they are present in the soil.

How long does coffee take to grow?

Counting from transplant, the seedling stage runs to about day 60, vegetative growth to about day 180, and flowering to about day 240, after which the crop moves into fruiting or bulking.

Track it in the app

PlantArmor keeps your coffee spray records, input costs and harvest weights in one place, and works offline while you are out in the field. Free to use.

Open PlantArmor Get it on Google Play

Other crop guides

Pest descriptions and treatments above come from the same reference library the PlantArmor app uses in the field. Pesticide registrations and permitted uses change — always read the current product label and observe the stated rate, re-entry period and pre-harvest interval.