Growing Barbados cherry (Malpighia emarginata), also known as acerola, in pots is a great option if you don’t have enough space or live in a cooler climate. Here's a guide to help you successfully grow a Barbados cherry plant in a container:

1. Choose the Right Pot
Size: Select a pot that is at least 15-20 gallons in size (18-24 inches in diameter). This will provide enough room for the roots to grow.
Material: Use a pot with good drainage. Terracotta or ceramic pots are great options, but plastic works too, as long as it has drainage holes.
2. Select the Right Soil
Use a well-draining, slightly acidic to neutral soil (pH of 6.5-7.5). A high-quality potting mix with added perlite or sand for drainage works well.
You can mix garden loam soil with compost for added nutrition and drainage properties.
3. Location and Light
Place the pot in a full-sun location. Barbados cherries thrive in at least 6-8 hours of direct sunlight.
If grown indoors or in colder climates, place the plant near a south-facing window or use grow lights.
4. Watering
Water the plant regularly but avoid waterlogging. Keep the soil moist but not soggy.
Allow the top inch of soil to dry between waterings.
During hot weather or if the plant is exposed to wind, you may need to water more frequently.
5. Fertilization
Fertilize during the growing season (spring and summer) with a balanced, slow-release fertilizer or a fertilizer high in nitrogen and potassium.
Apply fertilizer every 4-6 weeks, but cut back in the winter months when the plant is not actively growing.
6. Pruning
Prune the plant to maintain a compact shape and encourage bushy growth. Remove any dead or damaged branches.
Regular pruning will also help promote airflow and reduce the risk of diseases.
7. Temperature
Barbados cherry is a tropical/subtropical plant, so it thrives in warm temperatures (above 60°F/15°C).
If you live in an area where temperatures drop below this, bring the pot indoors during the winter or cover the plant with frost protection.
8. Pests and Diseases
Keep an eye out for common pests like aphids, scale insects, and whiteflies. Treat infestations with insecticidal soap or neem oil.
Ensure good air circulation to prevent fungal diseases, especially in humid environments.
9. Harvesting
Barbados cherry fruits develop in spring through early fall. They are ready to harvest when they turn bright red.
Pick the fruit when fully ripe for the best flavor and nutritional value.
10. Repotting
Repot your Barbados cherry every 2-3 years to refresh the soil and give the roots more space.
You can either increase the pot size or root-prune to keep it in the same container.