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Sweet Pepper pests, diseases and growing guide for Jamaica

What goes wrong with sweet pepper in Jamaican conditions, how to recognise it early, and what the crop needs at each stage. 6 common problems covered.

Growing conditions at a glance

Plant family	Solanaceae
Target soil pH	6 – 6.8
Seedling stage	Transplant to day 14
Vegetative stage	To day 45
Flowering stage	To day 70
Typical yield	1 lbs per plant
Harvest	Continuous — pick repeatedly over the season

Common sweet pepper pests and diseases

Pepper Weevil

The most destructive pepper insect pest. Larvae feed inside the fruit.

Signs to look for

Premature dropping of buds and young fruit
Small puncture holes in fruit
Rotting and internal feeding damage

What to do: Collect and destroy all fallen fruit. Apply broad-spectrum insecticides (e.g., Vydate, Actara) during flowering.

Thrips

Tiny, slender insects that rasp plant tissue and suck the sap. Major vectors for viruses.

Signs to look for

Silvery, stippled scarring on leaves
Tiny black specks of frass
Distorted flowers and scarred fruit

What to do: Apply Spinosad, Abamectin, or Imidacloprid. Use blue sticky traps for monitoring.

Anthracnose

A fungal disease thriving in warm, humid conditions causing destructive lesions on leaves and fruit.

Signs to look for

Sunken, dark circular lesions on fruit
Pinkish spore masses in lesions during wet weather
Leaf spotting and dropping

What to do: Apply preventative fungicides (Mancozeb, Azoxystrobin). Improve airflow and avoid overhead watering.

Phytophthora Root Rot

A soil-borne water mold causing rapid wilting and collapse of plants in poorly drained soils.

Signs to look for

Sudden wilting despite moist soil
Dark brown to black decayed roots
Dark lesion girdling the stem base

What to do: Improve drainage. Apply Metalaxyl/Mefenoxam as a soil drench. Avoid overwatering.

Blossom End Rot

A physiological disorder caused by a lack of calcium reaching the fruit, usually triggered by inconsistent watering.

Signs to look for

Large, leathery, sunken black patch on the bottom of the fruit
Fruit ripens prematurely

What to do: Maintain consistent soil moisture. Apply Calcium Nitrate via fertigation. Do not over-apply Nitrogen.

Mosaic Viruses

A complex of viruses causing mottled leaves and stunting, typically vectored by aphids or mechanical transmission.

Signs to look for

Mottled light/dark green patches
Stunted growth
Distorted fruit shape

What to do: Control aphid populations. Remove infected plants. Do not handle wet plants.

Feeding sweet pepper by growth stage

Stage	Nutrition	Why
Seedling	High Phosphorus starter	Feed starter solution to build a robust root structure. Keep soil warm and damp.
Vegetative	Balanced NPK (e.g. 20-20-20) + Micronutrients	Ensure bush development to shade future fruit from sunscald. Maintain moisture.
Flowering	Phosphorus and Calcium boost	Avoid nitrogen spikes which drop flowers. Apply calcium foliar sprays to prevent blossom end rot.
Fruiting	High Potassium (e.g. 15-5-35)	Sustain continuous fruiting. Apply potassium for thick walls and vibrant green/red color.

Questions growers ask

What are the most common sweet pepper pests and diseases in Jamaica?

The problems growers report most often are Pepper Weevil, Thrips, Anthracnose, Phytophthora Root Rot, Blossom End Rot, Mosaic Viruses. Each one is described above with the symptoms to look for and the recommended response.

What soil pH does sweet pepper need?

Sweet Pepper performs best in soil with a pH between 6 and 6.8. Outside that range nutrients become progressively less available to the plant even when they are present in the soil.

How long does sweet pepper take to grow?

Counting from transplant, the seedling stage runs to about day 14, vegetative growth to about day 45, and flowering to about day 70, after which the crop moves into fruiting or bulking.

Track it in the app

PlantArmor keeps your sweet pepper 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.